CN116555692A - High-temperature oxidation-resistant wear-resistant coating material and preparation and application methods thereof - Google Patents
High-temperature oxidation-resistant wear-resistant coating material and preparation and application methods thereof Download PDFInfo
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- CN116555692A CN116555692A CN202310562049.5A CN202310562049A CN116555692A CN 116555692 A CN116555692 A CN 116555692A CN 202310562049 A CN202310562049 A CN 202310562049A CN 116555692 A CN116555692 A CN 116555692A
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- 239000011248 coating agent Substances 0.000 title claims abstract description 66
- 238000000576 coating method Methods 0.000 title claims abstract description 66
- 239000000463 material Substances 0.000 title claims abstract description 47
- 230000003647 oxidation Effects 0.000 title claims abstract description 34
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims description 21
- 238000002360 preparation method Methods 0.000 title description 7
- 239000000843 powder Substances 0.000 claims abstract description 79
- 229910052751 metal Inorganic materials 0.000 claims abstract description 45
- 239000002184 metal Substances 0.000 claims abstract description 45
- 239000000919 ceramic Substances 0.000 claims abstract description 44
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000011651 chromium Substances 0.000 claims abstract description 27
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000010936 titanium Substances 0.000 claims abstract description 17
- 229910052742 iron Inorganic materials 0.000 claims abstract description 16
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 16
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 11
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims description 26
- 238000005507 spraying Methods 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 15
- 238000000498 ball milling Methods 0.000 claims description 11
- 239000012298 atmosphere Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 7
- 238000010285 flame spraying Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001307 helium Substances 0.000 claims description 5
- 229910052734 helium Inorganic materials 0.000 claims description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 5
- 239000003350 kerosene Substances 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000010907 mechanical stirring Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 239000012300 argon atmosphere Substances 0.000 claims description 2
- 239000000446 fuel Substances 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 238000007750 plasma spraying Methods 0.000 claims description 2
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 2
- 239000001488 sodium phosphate Substances 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 2
- 229910003470 tongbaite Inorganic materials 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 27
- 230000007797 corrosion Effects 0.000 abstract description 27
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 22
- 239000003546 flue gas Substances 0.000 abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000002253 acid Substances 0.000 abstract description 4
- 239000003513 alkali Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000007751 thermal spraying Methods 0.000 description 10
- 239000002131 composite material Substances 0.000 description 9
- 238000001816 cooling Methods 0.000 description 9
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 6
- 239000002585 base Substances 0.000 description 6
- 238000000713 high-energy ball milling Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 230000003064 anti-oxidating effect Effects 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 159000000011 group IA salts Chemical class 0.000 description 3
- 239000001294 propane Substances 0.000 description 3
- 238000005488 sandblasting Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/18—Non-metallic particles coated with metal
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/06—Alloys based on chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0005—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with at least one oxide and at least one of carbides, nitrides, borides or silicides as the main non-metallic constituents
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/14—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying for coating elongate material
- C23C4/16—Wires; Tubes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating By Spraying Or Casting (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The high-temperature oxidation-resistant wear-resistant coating material comprises chromium, nickel and metal ceramic powder, wherein the metal ceramic powder is ceramic powder coated with metal powder on the surface; the ceramic powder comprises Cr 3 C 2 And CeO 2 At least one of (a) and (b); the metal powder includes at least one of iron, aluminum, and titanium. The high-temperature oxidation-resistant wear-resistant coating material is particularly suitable for flue gas pipeline equipment, and has super high-temperature flue gas resistance and super high-temperature flue gas resistanceThe chimney flue condensate water has good corrosion effect, high temperature resistance, wear resistance, acid resistance, alkali resistance, tar adhesion resistance, good expansion coefficient and service life of more than 10 years.
Description
Technical Field
The invention relates to the technical field of coating materials, in particular to a high-temperature oxidation-resistant wear-resistant coating material and a preparation and application method thereof.
Background
With the development of industrial technology, metal substrate equipment and components have been widely used, so that social production efficiency is greatly improved, but many metal substrate equipment and components need to work and be used in extremely severe environments, and the service lives of the metal substrate equipment and components are greatly reduced under continuous corrosion of external environments. Devices such as flue gas ducts need to be exposed to erosion of the flue gas at all times; the corrosion effect of the flue gas is mainly expressed in the aspects of high temperature, abrasion, chemical corrosion and the like: 1. the temperature of the common flue gas is in the range of 70-500 ℃, under some special working conditions, the temperature of the flue gas can possibly reach more than 1000 ℃, and under high-temperature environment, high-temperature oxidation corrosion is generated on pipeline equipment; 2. the flow rate of the flue gas is generally above 5 m/s, the concentration of solid dust in the flue gas is generally above 10%, and the particle size of solid dust particles is generally above 0.3 mm, so that the flue gas flowing at high speed and the particles carried by the flue gas have extremely strong impact force, and the surface of flue gas pipeline equipment is abraded; 3. the flue gas contains ash and various corrosive components, such as SO 2 、HC1、NO 2 Salt mist and the like, and the relative humidity of the flue gas is generally 3-10%; thus, the water and corrosive components in the flue gas can easily form acidic liquid, thereby causing chemical corrosion on the surface of the equipment; in addition, in the process of desulfurizing the flue gas, chemical corrosion to equipment such as a flue gas pipeline and the like is aggravated due to the characteristic of alternating acid and alkali mediums. It can be seen that the corrosion protection requirements for flue gas duct systems are very stringent.
At present, the most common and effective corrosion protection method is to coat a layer of protective material on the surface of the flue gas pipeline equipment, but the corrosion resistance of the existing coating material needs to be improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the high-temperature oxidation-resistant wear-resistant coating material which has the advantages of high temperature resistance, wear resistance, acid and alkali resistance, tar adhesion resistance, good expansion coefficient, long service life and the like.
The technical scheme of the invention is as follows: the high-temperature oxidation-resistant wear-resistant coating material comprises chromium, nickel and metal ceramic powder, wherein the metal ceramic powder is ceramic powder coated with metal powder on the surface; the ceramic powder comprises Cr 3 C 2 And CeO 2 At least one of (a) and (b); the metal powder includes at least one of iron, aluminum, and titanium.
Further, the mass ratio of the metal powder to the ceramic powder in the metal ceramic powder is 1: (1.4-1.5);
further, the metal powder is an alloy powder containing Fe, AL, and Ti at the same time. Further, the mass ratio of Fe, AL and Ti in the metal powder is (1.5-2): (2-2.5): 1, a step of; the particle size of AL is preferably 1.5-2.5 μm; the particle size of Ti is preferably 1. Mu.m.
Further, the ceramic powder includes Cr at the same time 3 C 2 And CeO 2 And Cr in the ceramic powder 3 C 2 And CeO 2 The mass ratio of (2.5-3.5): 1.
further, cr 3 C 2 The particle size of (2) is 1-6 mu m; the CeO 2 The particle size of (2) is 10-25nm.
Further, the mass ratio of chromium, nickel and metal ceramic powder is 1:1 (0.2-0.3).
The invention also provides a preparation method of the high-temperature oxidation-resistant wear-resistant coating material, which comprises the following steps:
s1, uniformly mixing metal powder and ceramic powder to obtain metal ceramic powder;
s2, uniformly mixing the chromium, the nickel and the metal ceramic powder obtained in the step S1 by a stirrer, wherein the rotating speed is 150-250r/min, and the stirring time is 30-45min.
S3, drying the mixed material obtained in the step S2, wherein the drying temperature is 100-130 ℃; the drying time is 30-35min. The operation is mainly to remove moisture, and prevent pores from being generated due to the moisture in the spraying process, thereby affecting the compactness of the coating.
Further, in step S1, the metal powder and the ceramic powder are uniformly mixed by means of mechanical stirring and ball milling; the mechanical stirring and mixing time is 10-20min; the ball milling rotating speed is 400-800r/min; ball milling and mixing time is 8-12h; the ball milling operation is carried out in a protective atmosphere, wherein the protective atmosphere adopts helium atmosphere or argon atmosphere.
The invention also provides an application method of the high-temperature oxidation-resistant wear-resistant coating material, which comprises the following steps: and obtaining the high-temperature oxidation-resistant wear-resistant coating on the surface of the matrix by supersonic flame spraying or supersonic plasma spraying.
Further, a supersonic flame spraying technology is adopted, the prepared spraying material is deposited on the surface of the substrate by using oxygen-fuel flame to form a coating, the oxygen flow rate during spraying is 880-950L/min, the kerosene flow rate is 22-27L/h, and the spraying distance is 350-400mm; after the spraying is finished, the coating is subjected to hole sealing treatment, and the hole sealing agent is made of sodium silicate or phosphate hole sealing agent.
Compared with the prior art, the invention has the beneficial effects that:
1. the high-temperature oxidation-resistant wear-resistant coating material is particularly suitable for flue gas pipeline equipment, has the effects of super high-temperature flue gas resistance and chimney flue condensate corrosion resistance, is high-temperature resistant, wear-resistant, acid-resistant and alkali-resistant, tar adhesion-resistant, and has a good expansion coefficient, and the service life can be longer than 10 years;
2. the raw materials of the high-temperature oxidation-resistant wear-resistant coating material mainly comprise ceramic powder with iron, aluminum and titanium coated on the surface, and the iron, aluminum and titanium are coated on the surface of the ceramic powder, so that Cr can be effectively reduced 3 C 2 Decomposition during thermal spraying; meanwhile, iron, aluminum and titanium with low melting point are easy to be converted into oxides under the oxidation condition, so that a double-layer oxide structure is formed on the surface of the substrate, and the oxidation resistance is improved;
3. in the invention, a supersonic flame spraying method can be adopted to directly spray the spraying material on the substrate to form a coating; the spraying of a priming layer is not needed, and the process is simple and easy to operate; the porosity of the coating obtained by the supersonic flame spraying method is less than 2%, which is beneficial to improving the compactness of the coating; effectively slowing down the penetration of corrosive medium into the coating; thereby improving the corrosion resistance of the coating;
4. the bonding strength of the high-temperature oxidation-resistant wear-resistant coating material and the matrix is 55-70MPa, and the coating material is not easy to fall off from the matrix.
Drawings
FIG. 1 is a cross-sectional morphology diagram of a high temperature oxidation-resistant wear-resistant coating provided in example 1 of the present invention;
FIG. 2 is a cross-sectional profile view of the high-temperature oxidation-resistant wear-resistant coating provided in example 2 of the present invention;
FIG. 3 is a cross-sectional profile view of the high temperature oxidation-resistant wear-resistant coating provided in example 3 of the present invention;
FIG. 4 is a cross-sectional morphology of the coating provided in example 1 of the present invention after 100h of corrosion;
FIG. 5 is a cross-sectional profile of the coating provided in example 2 of the present invention after 100h of corrosion;
FIG. 6 is a cross-sectional profile of the coating provided in example 3 of the present invention after 100h of corrosion.
Detailed Description
The present invention will be described in further detail with reference to specific examples, wherein methods or functional elements not specifically described are prior art.
Example 1
The embodiment provides a preparation and application method of a high-temperature oxidation-resistant wear-resistant coating material, which comprises the following steps:
(1) Iron having a particle size of 2.0 μm, aluminum having a particle size of 1.5 μm and titanium having a particle size of 1.0 μm were mixed in a mass ratio of 1.5:2.5:1, fully mixing to obtain metal powder; adding ceramic powder of Cr with particle size of 1.5 μm 3 C 2 Powder and spherical CeO with particle size of 15nm 2 And Cr 3 C 2 With CeO 2 The mass ratio of the powder is 2.5:1, a step of; metal powder and ceramic powder are mixed according to the proportion of 1:1.5, mechanically stirring and mixing for 15min, and then performing high-energy ball milling for 5h under the protection of helium, wherein the ball milling time of the high-energy ball milling is 4.5h, the rotating speed is 350r/min, and the ball-to-material ratio is 30:1, preparing the metal ceramic powder wrapped by iron, aluminum and titanium.
(2) Chromium, nickel and the metal ceramic powder obtained in the step (1) are mixed according to the mass of 35:35:8, stirring and mixing, wherein the rotating speed of a stirrer is set to be 200r/min, the mixing and stirring time is 35min, and the thermal spraying powder, namely the high-temperature anti-oxidation wear-resistant coating, is obtained after uniform mixing;
(3) Carrying out oil removal and sand blasting treatment on the surface of a 20 # carbon steel serving as a base material workpiece to obtain a base material with the surface roughness of 1.5 Ra;
(4) Drying the thermal spraying powder obtained in the step (2) by adopting an oven to remove water, wherein the drying temperature is 100 ℃ and the drying time is 20min;
(5) Spraying the surface of the workpiece by adopting a supersonic flame thermal spraying method, wherein the technological parameters are as follows: the pressure of the fuel gas propane is 0.40MPa, the flow rate of the combustion-supporting gas oxygen is 880-920L/min, the flow rate of the kerosene is 22L/h, the gun distance is 300mm, and the spraying thickness is 350 mu m;
(6) Cooling the sprayed coated workpiece, and naturally cooling by adopting air cooling to obtain a Ni-Cr-Fe-Al-Ti-Cr3C2-CeO2 composite coating, wherein the mass fraction of each component of the coating is Ni:36%, fe:4.7%, A1:7.8%, ti:3.1%, cr 3 C 2 ：6.5%，CeO 2 :2.6% and the balance Cr, the coating section is shown in figure 1:
the prepared composite coating and a matrix material sample are subjected to a corrosion test for 100 hours in an alkaline salt-containing environment at 600 ℃ in an air atmosphere, and after the corrosion test is finished, the section view of the sample is shown in fig. 4, and as can be seen from comparison of fig. 1 and fig. 4, the corrosion product layer of the sample surface coating is very thin, has no obvious corrosion, has good surface state and has no shedding: and the bonding strength and surface hardness of the test piece coated with the composite coating layer were tested, wherein the bonding strength was measured to be 55MPa.
Example 2
The embodiment provides a preparation and application method of a high-temperature oxidation-resistant wear-resistant coating material, which comprises the following steps:
(1) Iron with a grain size of 2.5 μm, aluminum with a grain size of 2.0 μm and titanium with a grain size of 1.0 μm are mixed according to a mass ratio of 1.5:2:1, mixing to obtain metal powder; to which a ceramic powder consisting of Cr having a grain size of 2.5 μm was added 3 C 2 Powder and spherical CeO with particle diameter of 20nm 2 Mixing the materials according to the mass ratio of 3:1. Mechanically stirring and mixing metal powder and ceramic powder for 20min according to the proportion of 1:1.4, and then performing high-energy ball milling for 8 hours under the protection of helium, wherein the ball milling time of the high-energy ball milling is 7 hours, the rotating speed is 550r/min, and the ball-to-material ratio is 25:1, preparing metal ceramic powder wrapped by iron, aluminum and titanium;
(2) Chromium, nickel and the metal ceramic powder obtained in the step (1) are mixed according to the mass ratio of 45:45:10, stirring and mixing, wherein the rotating speed is 250r/min, the mixing time is 40min, and the thermal spraying powder, namely the high-temperature anti-oxidation wear-resistant coating, is obtained after uniform mixing;
(3) Carrying out oil removal and sand blasting treatment on the surface of a 20 # carbon steel serving as a base material workpiece to obtain a base material with the surface roughness of 2.0 Ra;
(4) Drying the thermal spraying powder obtained in the step (2) by adopting an oven to remove water, wherein the drying temperature is 120 ℃, and the drying time is 30min;
(5) Spraying the surface of the workpiece by adopting a supersonic flame thermal spraying method, wherein the technological parameters are as follows: the pressure of the fuel gas propane is 0.40MPa, the flow rate of the combustion-supporting gas oxygen is 900-920L/min, the flow rate of the kerosene is 26L/h, the gun distance is 400mm, and the spraying thickness is 400 mu m;
(6) Cooling the workpiece with the coating after spraying, and naturally cooling by adopting air cooling to obtain Ni-Cr-Fe-Al-Ti-Cr 3 C 2 -CeO 2 The composite coating comprises the following components in percentage by mass: 33%, fe:4.7%, A1:6.3%, ti:3.1%, cr 3 C 2 ：7.0%，CeO 2 :3.2% and the balance Cr, the coating section is shown in figure 2:
the prepared composite coating and a matrix material sample are subjected to a corrosion test for 100 hours in an alkaline salt-containing environment at 600 ℃ in an air atmosphere, a section view of the sample after the corrosion test is finished is shown in fig. 5, and comparison of fig. 2 and fig. 5 shows that the corrosion product layer of the sample surface coating is very thin, has no obvious corrosion, has a good surface state and has no shedding: and the bonding strength and surface hardness of the test piece coated with the composite coating layer were tested, wherein the bonding strength was measured to be 60MPa.
Example 3
The embodiment provides a preparation and application method of a high-temperature oxidation-resistant wear-resistant coating material, which comprises the following steps:
(1) Iron with a grain size of 2.0 μm, aluminum with a grain size of 2.0 μm and titanium with a grain size of 1.0 μm are mixed according to a mass ratio of 2:2:1, mixing to obtain metal powder; adding thereto a ceramic powder composed of Cr having a particle diameter of 3.5 μm 3 C 2 Powder and spherical CeO with particle size of 10nm 2， Mixing the powder according to the mass ratio of 3.5:1; mechanically stirring and mixing metal powder and ceramic powder for 10min according to the ratio of 1:1.5, and then performing high-energy ball milling for 12 hours under the protection of helium, wherein the ball milling time of the high-energy ball milling treatment is 10h, the rotating speed is 600r/min, and the ball-to-material ratio is 30:1, preparing the metal ceramic powder wrapped by iron, aluminum and titanium.
(2) Chromium, nickel and the metal ceramic powder obtained in the step (1) are mixed according to the mass ratio of 40:40:9, stirring and mixing, wherein the rotating speed is 250r/min, the mixing time is 45min, and the thermal spraying powder, namely the high-temperature anti-oxidation wear-resistant paint, is obtained after uniform mixing;
(3) Carrying out oil removal and sand blasting treatment on the surface of a 20 # carbon steel serving as a base material workpiece to obtain a base material with the surface roughness of 2.0 Ra;
(4) Drying the thermal spraying powder obtained in the step (2) by adopting an oven to remove water, wherein the drying temperature is 120 ℃, and the drying time is 30min;
(5) Spraying the surface of the workpiece by adopting supersonic flame thermal spraying, wherein the technological parameters are as follows: the pressure of the fuel gas propane is 0.40MPa, the flow rate of the combustion-supporting gas oxygen is 900-950L/min, the flow rate of kerosene is 26L/h, the gun distance is 350mm, and the spraying thickness is 450 mu m;
(6) Cooling the workpiece with the coating after spraying, and naturally cooling by adopting air cooling to obtain Ni-Cr-Fe-Al-Ti-Cr 3 C 2 -CeO 2 The composite coating comprises the following components in percentage by mass: 35%, fe:4.7%, A1:4.7%, ti:2.35%, cr 3 C 2 ：6.9%，CeO 2 :3.1 percent and the balance of Cr, and the section of the coating is shown in figure 3:
the prepared composite coating and a matrix material sample are subjected to a corrosion test for 100 hours in an alkaline salt-containing environment at 600 ℃ in an air atmosphere, a section view of the sample after the corrosion test is finished is shown in fig. 6, and comparison of fig. 3 and fig. 6 shows that the corrosion product layer of the sample surface coating is very thin, has no obvious corrosion, has a good surface state and has no shedding: and the bonding strength and surface hardness of the test piece coated with the composite coating layer were tested, wherein the bonding strength was measured to be 66MPa.
The above is only a part of embodiments of the present invention, and it is not intended to limit the present invention, and it is obvious to those skilled in the art that the present invention can be combined and modified in various technical features, and it is intended to include the present invention in the scope of the present invention without departing from the spirit and scope of the present invention.
Claims (10)
1. A high-temperature oxidation-resistant wear-resistant coating material is characterized in that: the coating material comprises chromium, nickel and metal ceramic powder, wherein the metal ceramic powder is ceramic powder coated with metal powder on the surface; the metal powder includes at least one of iron, aluminum, and titanium; the ceramic powder comprises at least one of Cr3C2 and CeO 2; the mass ratio of the metal powder to the ceramic powder in the metal ceramic powder is 1: (1.3-1.5).
2. The high temperature oxidation resistant wear resistant coating material according to claim 1, wherein: the metal powder is alloy powder containing Fe, AL and Ti.
3. The high temperature oxidation resistant wear resistant coating material according to claim 2, wherein: the mass ratio of Fe, AL and Ti in the metal powder is 2:2:1.
4. the high temperature oxidation resistant wear resistant coating material according to claim 1, wherein: the ceramic powder simultaneously comprises Cr 3 C 2 And CeO 2 And Cr in the ceramic powder 3 C 2 Mass ratio with CeO23.5:1.
5. the high temperature oxidation resistant wear resistant coating material according to claim 4, wherein: the Cr 3 C 2 The particle size of (2) is 1-6 mu m; the CeO 2 The particle size of (2) is 10-15nm.
6. The high temperature oxidation resistant wear resistant coating material according to claim 1, wherein: the mass ratio of chromium, nickel and metal ceramic powder is 40:40:9.
7. a method for preparing a high temperature oxidation-resistant wear-resistant coating material for producing the coating material according to any one of claims 1 to 6, comprising the steps of:
s1, uniformly mixing metal powder and ceramic powder to obtain metal ceramic powder;
s2, uniformly mixing chromium, nickel and the metal ceramic powder obtained in the step S1 by a stirrer, wherein the rotating speed is 150-250r/min, and the stirring time is 30-45min;
s3, drying the mixed material obtained in the step S2, wherein the drying temperature is 100-130 ℃; the drying time is 30-35min.
8. The method for preparing the high-temperature oxidation-resistant wear-resistant coating material according to claim 7, wherein the method comprises the following steps: in step S1, uniformly mixing metal powder and ceramic powder by means of mechanical stirring and ball milling; the mechanical stirring and mixing time is 10-20min; the ball milling rotating speed is 400-800r/min; ball milling and mixing time is 8-12h; the ball milling operation is carried out in a protective atmosphere, wherein the protective atmosphere adopts helium atmosphere or argon atmosphere.
9. An application method of a high-temperature oxidation-resistant wear-resistant coating material is characterized by comprising the following steps of: forming the high-temperature oxidation-resistant wear-resistant coating on the surface of a substrate by using the high-temperature oxidation-resistant wear-resistant coating material according to any one of claims 1 to 6 through supersonic flame spraying or supersonic plasma spraying.
10. The method for applying a high temperature oxidation-resistant wear-resistant coating material according to claim 9, wherein: the supersonic flame spraying technology is adopted, the prepared spraying material is deposited on the surface of the matrix by oxygen-fuel flame to form a coating, the oxygen flow rate during spraying is 900-950L/min, the kerosene flow rate is 25-27L/h, and the spraying distance is 350-370mm; after the spraying is finished, the coating is subjected to hole sealing treatment, and the hole sealing agent is made of sodium silicate or phosphate hole sealing agent.
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