CN108866470A - A kind of preparation method of air plasma spraying alloy-ceramic laminar coating - Google Patents
A kind of preparation method of air plasma spraying alloy-ceramic laminar coating Download PDFInfo
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- CN108866470A CN108866470A CN201810630621.6A CN201810630621A CN108866470A CN 108866470 A CN108866470 A CN 108866470A CN 201810630621 A CN201810630621 A CN 201810630621A CN 108866470 A CN108866470 A CN 108866470A
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- 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
- C23C4/134—Plasma spraying
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- 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
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Abstract
The present invention relates to a kind of preparation methods of air plasma spraying alloy-ceramic laminar coating.Ceramal powder is directly sprayed in matrix surface using air plasma spraying mode, prepares high-temperature wearable corrosion-inhibiting coating.Present invention process is simple, and cost is relatively low, efficiently solves the problems, such as the big toughness deficiency of ceramic coating brittleness, the service life is longer for coating.
Description
Technical field
The present invention relates to technical field of surface coating, in particular to a kind of air plasma spraying alloy-ceramic laminar applies
The preparation method of layer.
Background technique
With the fast development of modern industrial technology, in the fields such as metallurgy, chemical industry, the energy, military project, high temperature equipment is obtained
It is widely applied, especially in the corrosive medium of high temperature, high pressure and complexity, the Anticorrosion solution of these equipment is bad not only
Huge economic loss is caused, while can also bring many hidden danger to safety in production, therefore carries out the high-temperature anticorrosion work of equipment
It can not only guarantee safe production, moreover it is possible to extend the service life of equipment, save fund.Alloy-ceramics prepared by the present invention
Stratiform coating just has good high-temperature corrosion resistance performance, and matrix can be protected from the attrition and attack under hot environment, extended
Its service life.
NiCrBSi powder of the present invention is the Ni base self-fluxing powder using Ni, Cr as main component, and Cr improves Ni
The high temperature corrosion-resisting performance and high temperature oxidation resistance of matrix, and chromium boride hard phase is formed with boron, improve its hardness and wear-resisting
Property, B and Si element can reduce alloy melting point, significantly improve the wettability of matrix surface.Ni base self-fluxing powder has excellent
Different wear-resisting property and wettability, and there is good backup capability, it is ideal coated substrate material.Ceramal
Composite material has had both the high tenacity of alloy substrate and the high rigidity of ceramic phase reinforcement and has been widely used in wear-resistant coating.The present invention
YSZ hard ceramic powder is added in Ni base coating basis material, is not only acted as the effect of hard phase, is mentioned coating hardness significantly
Height, still very excellent barrier material, improves the high-temperature wearable antiseptic property of coated substrate.
Atmospheric plasma spraying technology is a kind of important surface strengthening technology, it is to be sent into metal powder or non-metal powder
Fusing or semi-molten state are heated in plasma arc flame stream, plasma arc flame stream temperature is up to 12000 ~ 16000 DEG C, flame flow velocity
Degree is 200 ~ 1200 m/s, metal powder and ceramic powders can be made to melt sufficiently, and arrive with plasma arc flame stream high-velocity spray
The matrix surface of sandblasting, in the cooling rate of superelevation（105-107K/s）Under, metal ceramic wear-resisting required for preparing applies
Layer.
Traditional air plasma spraying ceramal composite coating technology is that alloyed powder and ceramic powder are carried out ball milling in advance
Mixing, practice have shown that, when alloyed powder differs larger with ceramic powder density or partial size, two kinds of powder are unable to fully be blended in one
It rises, starting powder can be also destroyed in mechanical milling process, powder waste is than more serious in spraying.Though another method uses reunion powder
Right spraying effect is preferable, but higher cost, is not useable for producing in enormous quantities.The method that the present invention uses two-way powder feeding, solves
Ceramic powders are unable to fully deposit to the defect on coated substrate, and design perpendicular to plasma arc flame stream, are parallel to each other
Alloyed powder and ceramic powder powder feeding pipe, and alloyed powder powder feeding pipe away from plasma arc nozzle farther out, ceramic powder powder feeding pipe is away from plasma
Arc nozzle is closer, solves the problems, such as that dystectic ceramic powder can not sufficiently melt in plasma arc flame stream, makes alloy
Ceramic powder even compact is deposited on matrix surface.
CN106756713A provides a kind of coating for improving combustion engine compressor drum barrel wearability peculiar to vessel and its preparation side
Method.The invention first pre-processes combustion engine compressor drum barrel alloy substrate and ceramic fibre, according still further to 18% ~ 80%YSZ powder
Body, 18% ~ 80%Al2O3The quality of powder and 2% ~ 20% ceramic fibre is mixed than composition ratio, is then carried out ball-milling treatment and is obtained
To ceramic composite powder.One layer of adhesive layer is sprayed in matrix surface by atmospheric plasma spraying technology again, then one layer of spraying
Ceramic Composite working lining.The invention biggest advantage is solve the big toughness of ceramic coating brittleness not by adding ceramic fibre
The problem of foot, realization is fiber reinforced, improves the wearability of coating.
CN104032256A discloses a kind of preparation method of wear resistant corrosion resistant ni base alloy coating, which treats first
The workpiece surface of spraying carries out sandblasting roughening treatment, using ultrasonic cleaning and drying, then uses Supersonic Plasma Spraying
The technological parameter of system and plasma gun, spraying is：30 ~ 40 KW of spray power, 20 ~ 30 g/min of powder feeding rate, throughput
90 ~ 110 L/min, 90 ~ 110 mm of spray distance.Then the nickel-base alloy that a layer thickness is 40 ~ 60 μm is sprayed in matrix surface
Coating, natural cooling obtains ni base alloy coating in air.The Supersonic Plasma Spraying technology preparation that the invention uses
The highly uniform densification of ni base alloy coating, bond strength is higher with coating hardness, in high temperature（300℃）Under the conditions of have it is excellent
Wear-corrosion resistance.
CN104195494A relates to a kind of preparation method of cermet composite coating, coating used in the method
Material is iron, Ni-based chromium carbide compounded material, is pre-processed first to substrate, then prepares metal using plasma cladding method
Ceramic composite coating, institute are using technological parameter：150 ~ 200 A of electric current, 45 ~ 60 V of voltage, 100 ~ 120 g/min of powder sending quantity,
300 ~ 500 mm/min of scanning speed, two pass scanning.The cermet composite coating dense structure of this method preparation, surface are flat
It is whole, and hardness is high, excellent wear-resisting property, and application performance is good.
Summary of the invention
Present invention aims to overcome that drawbacks described above, a kind of air plasma spraying alloy-ceramic laminar coating is developed
Preparation method.
The technical scheme adopted by the invention is that：A kind of preparation side of air plasma spraying alloy-ceramic laminar coating
Method has following steps：Ceramal powder is directly sprayed in matrix surface using air plasma spraying mode, prepares high temperature
Wear-and corrosion-resistant coating.
Metal powder in the ceramal powder is NiCrBSi powder, and ceramic powder is YSZ powder.
Alloyed powder and ceramic powder are sent into plasma arc simultaneously using two-way automatic powder feeding system.
Ceramic powder powder feeding pipe is closer away from plasma-arc nozzle, alloy powder feeding pipe away from plasma-arc nozzle farther out.
Plasma spray coating process electric current is 500-550 A, and voltage is 55-65 V, and it is 40-60 that plasma, which generates gas Ar flow,
L/min, H2Flow is 5-10 L/min, and ceramic powder powder feed rate is 3-10 g/min, and alloyed powder powder feed rate is 30 g/min,
It is 300-450 μm that coating layer thickness, which is made,.
The NiCrBSi powder density is 7.5 g/cm3, YSZ powder density is 6.1 g/cm3, 80-100 DEG C of oven temperature, do
The dry time is 2h.
The mass percent of ceramic powder YSZ powder is 10 ~ 30% in ceramal powder.
It first treats sprayed surface and carries out ultrasonic cleaning processing and drying with acetone,
Then it is carried out containing following steps：
1）Sandblasting roughening treatment is carried out to matrix surface to be sprayed using Brown Alundum；
2）Quantitative alloyed powder and ceramic powder are weighed respectively is placed in drying for standby in baking oven；
3）Alloyed powder and ceramic powder are sent into plasma arc simultaneously using two-way automatic powder feeding system；
4）Ceramal powder is directly sprayed in matrix surface using air plasma spraying mode, prepares the painting of high-temperature wearable anti-corrosion
Layer；
5）Ceramal dusty material includes the NiCrBSi-YSZ ceramal powder of different YSZ contents；
6）The workpiece sprayed is placed in natural cooling in air.
The step 1）Brown Alundum used in middle progress sandblasting roughening treatment is 20 mesh, the Substrate Surface Roughness after roughening
Not less than Ra7.0.
Spraying equipment used in air plasma spraying mode includes：
Anode nozzle including generating plasma arc flame stream（1）And cathode（2）, and be vertically arranged with the plasma arc flame stream
Ceramic powder powder feeding pipe（3）With alloyed powder powder feeding pipe（4）, wherein alloyed powder powder feeding pipe（4）And anode nozzle（1）Between distance compared with
Far, ceramic powder powder feeding pipe（3）And anode nozzle（1）Between be closer；
In the ceramic powder powder feeding pipe（3）With alloyed powder powder feeding pipe（4）Matrix is set below（8）.
Advantages of the present invention and effect are：First, feeding powder used in the present invention is ceramal powder, alloy pottery
Ceramic material has both the high tenacity of alloy material and the high rigidity of ceramic material, spray coating obtained have it is very excellent resistance to
Abrasion, corrosion-resistant and high temperature resistance.Wherein used alloyed powder is NiCrBSi powder, and this Ni base self-melting alloy is normal
Coated substrate material.Used ceramic powder is YSZ powder, and this material has high-melting-point, lower thermal conductivity, high-fracture toughness
The excellent thermodynamic property with high thermal expansion coefficient etc. is extraordinary barrier material, while its high-temperature corrosion resistance performance ten
It is point excellent, therefore this hard particles are embedded into coated substrate can significantly improve coating high-temp wear-and corrosion-resistant performance, can answer
For components such as aero-engine, diesel engine, industry gas turbines, it is with a wide range of applications in the industrial production.
Second, compared to other hot-spraying techniques, plasma spraying technology is easy to operate flexibly, and spray efficiency is higher, answers
With more extensively.The technology provides higher plasma arc flame stream temperature（12000~16000℃）, higher flame flow velocity degree（200~
1200 m/s）, melt alloyed powder and ceramic powder sufficiently in plasma arc flame stream, deposited to the jet velocity being exceedingly fast
Matrix surface, and with the cooling rate of superelevation（105-107K/s）Cooling obtains ceramal coating.
Third, the method that the present invention uses two-way powder feeding, solves ceramic powders and is unable to fully deposit on coated substrate
Defect, and design perpendicular to plasma arc flame stream, the alloyed powder being parallel to each other and ceramic powder powder feeding pipe, and alloyed powder is sent
Farther out away from plasma arc nozzle, ceramic powder powder feeding pipe is closer away from plasma arc nozzle for tube cell, and ceramic powder particles are in plasma arc flame
The flight time is longer in stream, solves the problems, such as that dystectic ceramic powder can not sufficiently melt in plasma arc flame stream,
Make molten alloy powder material and ceramic powder material even compact is deposited on matrix surface.
4th, the present invention density different from two kinds of materials of ceramic powder using alloyed powder optimizes spraying process, makes two kinds of powder
Different spraying profiles is realized in spraying in end, obtains stratiform alloy-ceramic coating, there are certain holes for this layer structure
Gap, these holes can effectively reduce the thermal conductivity of coating, enhance its heat-proof quality.In high-temperature corrosion environment, this stratiform knot
Structure can also weaken the infiltration of corrosive medium, improve the corrosion resisting property of coating.
Compared to a kind of patent CN106756713A coating for improving combustion engine compressor drum barrel wearability peculiar to vessel provided and
Preparation method, the present invention spray Ni base self-fluxing powder as coated substrate, coating toughness significantly improves, hardness with it is wear-resisting
Property it is also very excellent, ceramic fibre toughening ceramic composite granule preparation process used in CN106756713A is complicated, and makes pottery
Porcelain powder brittleness is larger, and vulnerable to damage in mechanical milling process, and present invention process is simple, and cost is relatively low, efficiently solves ceramic painting
The layer big toughness deficiency problem of brittleness, the service life is longer for coating.
Compared to a kind of preparation method of wear resistant corrosion resistant ni base alloy coating disclosed in patent CN104032256A, this hair
It is bright that hard YSZ ceramic powder is coated in coated substrate, coating hardness is effectively increased, and YSZ material thermal conductivity is lower, it is heat-resisting
Better performances, make the coating wear-resistant, excellent anti-corrosion performance under the conditions of high-temperature service, and the coating application range is more wide
It is general.
Compared to a kind of preparation method of the patent CN104195494A cermet composite coating provided, two-way of the present invention
The plasma spraying technology of powder feeding can prepare different ceramal coatings according to different demands, solve alloyed powder and ceramic powder
The problem of mixed powder hardly possible, production efficiency is higher, and cost is relatively low, can be mass-produced.
Detailed description of the invention
Fig. 1 --- two-way powder feeding Plasma Spraying Process Using schematic diagram of the present invention.
The corresponding component names of each label are as follows in figure：
1 is anode nozzle in figure, and 2 be cathode, and 3 be ceramic powder powder feeding pipe, and 4 be alloyed powder powder feeding pipe, and 5 be plasma arc flame stream, 6
It is coating 7,8 for melt granules 6,7 is matrix.
NiCrBSi-YSZ composite coating section SEM figure in Fig. 2 --- the embodiment of the present invention 1.
NiCrBSi-YSZ composite coating XRD spectrum in Fig. 3 --- the embodiment of the present invention 1.
Specific embodiment
Technical thought of the invention is：
It for the problem that the metal material corrosion-vulnerable under various service conditions, is prone to wear, the present invention is using two-way powder feeding
Method prepares ceramal coating, used two-way powder feeding side in matrix surface using plasma spraying surface strengthening technology
Method efficiently solves the problems, such as that alloyed powder and ceramic powder since the mixed powder that density difference is larger and generates is difficult, make the molten of two kinds of powder
Matrix surface can be sufficiently deposited on by melting particle.The purpose of the present invention is overcoming deficiency in the prior art, one kind is designed
Perpendicular to plasma arc flame stream, it is parallel to each other, metal powder in tandem and ceramic powder powder feeding pipe arrangement mode, optimization spray rail
Mark obtains the excellent ceramal coating of high-temperature wearable antiseptic property by plasma spray technology.
The present invention is illustrated below with reference to thermal spraying schematic diagram 1.
Plasma torch Anodic 1 gets plasma-arc between cathode 2, formed after the ejection of anode nozzle 1 etc. from
Daughter flame stream 5, ceramic powder powder feeding pipe 3 are respectively sent NiCrBSi powder and YSZ powder with radial automatic powder feeding system with alloyed powder powder feeding pipe 4
Enter flame flow center, wherein two powder feeding pipes are parallel to each other, farther out, ceramic powder is sent distance between alloyed powder powder feeding pipe 4 and anode nozzle 1
It is closer between tube cell 3 and anode nozzle 1, the melt granules 6 of subsequent flame flow center are arrived through plasma arc flame stream accelerating jetting
8 surface of matrix forms the ceramal coating 7 of even compact.
Embodiment 1：
1. being cleaned by ultrasonic with acetone to matrix surface to be sprayed, dry 2h is subsequently placed in 80-100 DEG C of baking oven.
2. carrying out sandblasting roughening treatment to matrix surface to be sprayed using the Brown Alundum that granularity is 20 mesh, make matrix surface
There are many unevenness, the Substrate Surface Roughness after roughening is not less than Ra7.0.
3. weighing NiCrBSi powder of the 2000 g particle size ranges at -75 ~+40 μm respectively, weight percentage of each component is：
Chromium 15 ~ 20%, boron 3 ~ 4.5%, silicon 3.5 ~ 5.5%, carbon 0.5 ~ 1.1%, iron < 5%, surplus are nickel.2000 g particle size ranges -53 ~+
15 μm of YSZ powder is placed in 80 ~ 100 DEG C of baking ovens dry 2 h to guarantee powder in spraying process and keeps good flowing
Property.
4. being sent into alloyed powder and ceramic powder in plasma arc simultaneously using two-way automatic powder feeding system, alloyed powder powder feeding pipe is controlled
It with ceramic powder powder feeding pipe all perpendicular to plasma arc flame stream, is parallel to each other, alloyed powder powder feeding pipe farther out, is made pottery away from plasma arc nozzle
Porcelain powder powder feeding pipe is closer away from plasma arc nozzle, and adjusting distance between two powder feeding pipes is 10 mm.
5. directly preparing stratiform coating, tool in matrix surface spraying ceramal powder using air plasma spraying mode
Body way is that dried alloy powder and ceramic powders are respectively put into alloyed powder powder feeder 1 and ceramic powder powder feeder 2, powder feeding
1 powder sending quantity of device is 29.8 g/min, and 2 powder sending quantity of powder feeder is 13.5 g/min.Adjusting plasma spray coating process electric current is 517
A, voltage are 58 V, and it is 50 L/min, H that plasma, which generates gas Ar flow,2Flow is 8 L/min, and spray distance is 120 mm, rifle
Translational velocity is 300 mm/s, and it is 3 mm that rifle, which translates spacing, and spraying number of repetition is 5, and the type of cooling is that 0.3 Mpa is air-cooled.
6. the workpiece sprayed is placed in natural cooling in air, then the NiCrBSi-YSZ coating being prepared is led to
Overscanning Electronic Speculum observes its Cross Section Morphology, as shown in Fig. 2, discovery coating is well combined with matrix, coating is in typical stratiform knot
Structure, coating layer thickness are about 300 μm.
7. pair NiCrBSi-YSZ coating being prepared is hardness test, coating hardness HV0.1Vickers hardness can reach
834。
8. the coating prepared by pair carries out reciprocating friction and wear test, wherein 20 N are loaded, 4 Hz of frequency, polishing scratch length 8
Mm, 1 h of duration, total 72 m of sliding distance, the wear rate of the NiCrBSi-YSZ coating of spraying is 9.7 × 10-2 mm3/N·m。
9. the metal-cermic coating prepared by pair carries out its phase composition of XRD analysis, as a result as shown in figure 3, coating is mainly deposited
In γ-Ni phase and（（ZrO2）0.94（Y2O3）0.06）0.943Phase.
Embodiment 2：
The present embodiment difference from example 1 is that：1 powder sending quantity of metal powder powder feeder is 29.8 g/min, pottery in step 5
2 powder sending quantity of porcelain powder powder feeder is 3.4 g/min.Adjusting plasma spray coating process electric current is 517 A, and voltage is 58 V, plasma
Generation gas Ar flow is 50 L/min, H2Flow is 8 L/min, and spray distance is 120 mm, and rifle translational velocity is 300 mm/s,
It is 3 mm that rifle, which translates spacing, and spraying number of repetition is 5, and the type of cooling is that 0.3 Mpa is air-cooled.
Hardness test, coating hardness HV are done to the NiCrBSi-YSZ coating being prepared0.1Vickers hardness can reach 742.
Reciprocating friction and wear test is carried out to prepared coating, wherein 20 N are loaded, 4 Hz of frequency, polishing scratch length 8
Mm, 1 h of duration, total 72 m of sliding distance, the wear rate of the NiCrBSi-YSZ coating of spraying is 4.6 × 10-2 mm3/N·m。
Embodiment 3：
The present embodiment difference from example 1 is that：1 powder sending quantity of metal powder powder feeder is 29.8 g/min, pottery in step 5
2 powder sending quantity of porcelain powder powder feeder is 8.2 g/min.Adjusting plasma spray coating process electric current is 517 A, and voltage is 58 V, plasma
Generation gas Ar flow is 50 L/min, H2Flow is 8 L/min, and spray distance is 120 mm, and rifle translational velocity is 300 mm/s,
It is 3 mm that rifle, which translates spacing, and spraying number of repetition is 5, and the type of cooling is that 0.3 Mpa is air-cooled.
Hardness test, coating hardness HV are done to the NiCrBSi-YSZ coating being prepared0.1Vickers hardness can reach 754.
Reciprocating friction and wear test is carried out to prepared coating, wherein 20 N are loaded, 4 Hz of frequency, polishing scratch length 8
Mm, 1 h of duration, total 72 m of sliding distance, the wear rate of the NiCrBSi-YSZ coating of spraying is 4.6 × 10-2 mm3/N·m。
Embodiment 4：
The present embodiment difference from example 1 is that：1 powder sending quantity of metal powder powder feeder is 29.8 g/min, pottery in step 5
2 powder sending quantity of porcelain powder powder feeder is 3.4 g/min.Adjusting plasma spray coating process electric current is 517 A, and voltage is 58 V, plasma
Generation gas Ar flow is 65 L/min, H2Flow is 8 L/min, and spray distance is 100 mm, and rifle translational velocity is 300 mm/s,
It is 3 mm that rifle, which translates spacing, and spraying number of repetition is 5, and the type of cooling is that 0.3 Mpa is air-cooled.
Embodiment 5：
The present embodiment difference from example 1 is that：1 powder sending quantity of metal powder powder feeder is 29.8 g/min, pottery in step 5
2 powder sending quantity of porcelain powder powder feeder is 3.4 g/min.Adjusting plasma spray coating process electric current is 600 A, and voltage is 50 V, plasma
Generation gas Ar flow is 50 L/min, H2Flow is 8 L/min, and spray distance is 100 mm, and rifle translational velocity is 300 mm/s,
It is 3 mm that rifle, which translates spacing, and spraying number of repetition is 5, and the type of cooling is that 0.3 Mpa is air-cooled.
Embodiment 6：
The present embodiment difference from example 1 is that：In step 3 in NiCrBSi alloy powder each component weight percent
Than for chromium 11 ~ 15%, boron 2 ~ 3%, silicon 3 ~ 4.5%, carbon 0.3 ~ 0.6%, iron < 5%, surplus is nickel.
Embodiment 7：
The present embodiment difference from example 1 is that：In step 3 in NiCrBSi alloy powder each component weight percent
Than for chromium 7 ~ 10%, boron 1.5 ~ 2.5%, silicon 2 ~ 3.5%, carbon≤0.4%, iron < 4%, surplus is nickel.
Claims (10)
1. a kind of preparation method of air plasma spraying alloy-ceramic laminar coating, which is characterized in that have following steps：
Ceramal powder is directly sprayed in matrix surface using air plasma spraying mode, prepares high-temperature wearable corrosion-inhibiting coating.
2. a kind of preparation method of air plasma spraying alloy-ceramic laminar coating according to claim 1, feature
It is, the metal powder in the ceramal powder is NiCrBSi powder, and ceramic powder is YSZ powder.
3. a kind of preparation method of air plasma spraying alloy-ceramic laminar coating according to claim 1, feature
It is, is sent into alloyed powder and ceramic powder in plasma arc simultaneously using two-way automatic powder feeding system.
4. a kind of preparation method of air plasma spraying alloy-ceramic laminar coating according to claim 3, feature
Be, ceramic powder powder feeding pipe is closer away from plasma-arc nozzle, alloy powder feeding pipe away from plasma-arc nozzle farther out.
5. a kind of preparation method of air plasma spraying alloy-ceramic laminar coating according to claim 3, feature
It is, plasma spray coating process electric current is 500-550 A, and voltage is 55-65 V, and it is 40-60 L/ that plasma, which generates gas Ar flow,
Min, H2Flow is 5-10 L/min, and ceramic powder powder feed rate is 3-10 g/min, and alloyed powder powder feed rate is 30 g/min, system
Obtaining coating layer thickness is 300-450 μm.
6. a kind of preparation method of air plasma spraying alloy-ceramic laminar coating according to claim 2, feature
It is, the NiCrBSi powder density is 7.5 g/cm3, YSZ powder density is 6.1 g/cm3, 80-100 DEG C of oven temperature, dry
Time is 2h.
7. a kind of preparation method of air plasma spraying alloy-ceramic laminar coating according to claim 2, feature
It is, the mass percent of ceramic powder YSZ powder is 10 ~ 30% in ceramal powder.
8. a kind of preparation method of air plasma spraying alloy-ceramic laminar coating according to claim 1, feature
It is, first treats sprayed surface with acetone and carry out ultrasonic cleaning processing and drying,
Then it is carried out containing following steps：
1）Sandblasting roughening treatment is carried out to matrix surface to be sprayed using Brown Alundum；
2）Quantitative alloyed powder and ceramic powder are weighed respectively is placed in drying for standby in baking oven；
3）Alloyed powder and ceramic powder are sent into plasma arc simultaneously using two-way automatic powder feeding system；
4）Ceramal powder is directly sprayed in matrix surface using air plasma spraying mode, prepares the painting of high-temperature wearable anti-corrosion
Layer；
5）Ceramal dusty material includes the NiCrBSi-YSZ ceramal powder of different YSZ contents；
6）The workpiece sprayed is placed in natural cooling in air.
9. a kind of preparation method of air plasma spraying alloy-ceramic laminar coating according to claim 8, feature
It is, the step 1）Brown Alundum used in middle progress sandblasting roughening treatment is 20 mesh, and the Substrate Surface Roughness after roughening is not
Lower than Ra7.0.
10. a kind of preparation method of air plasma spraying alloy-ceramic laminar coating according to claim 1, special
Sign is that spraying equipment used in air plasma spraying mode includes：
Anode nozzle including generating plasma arc flame stream（1）And cathode（2）, and be vertically arranged with the plasma arc flame stream
Ceramic powder powder feeding pipe（3）With alloyed powder powder feeding pipe（4）, wherein alloyed powder powder feeding pipe（4）And anode nozzle（1）Between distance compared with
Far, ceramic powder powder feeding pipe（3）And anode nozzle（1）Between be closer；
In the ceramic powder powder feeding pipe（3）With alloyed powder powder feeding pipe（4）Matrix is set below（8）.
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| CN114147436A (en) * | 2022-01-04 | 2022-03-08 | 中国兵器工业第五九研究所 | Preparation method of composite component with periodic gradient structure |
| CN114959546A (en) * | 2022-06-09 | 2022-08-30 | 昆明理工大学 | Preparation method of continuous transition coating with single-way powder feeding |
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| CN110423919B (en) * | 2019-08-05 | 2021-07-30 | 西安热工研究院有限公司 | Water erosion protective coating for last-stage blade of steam turbine and preparation method thereof |
| CN112279682A (en) * | 2020-04-26 | 2021-01-29 | 广东省新材料研究所 | Silicon-based composite coating, preparation method and application thereof, and aircraft engine |
| CN113265608A (en) * | 2021-04-22 | 2021-08-17 | 西安石油大学 | Bionic gradient antifouling composite coating and preparation method thereof |
| CN114147436A (en) * | 2022-01-04 | 2022-03-08 | 中国兵器工业第五九研究所 | Preparation method of composite component with periodic gradient structure |
| CN114959546A (en) * | 2022-06-09 | 2022-08-30 | 昆明理工大学 | Preparation method of continuous transition coating with single-way powder feeding |
| CN115305433A (en) * | 2022-07-25 | 2022-11-08 | 广东羚光新材料股份有限公司 | Nickel net and preparation method and application thereof |
| CN115305433B (en) * | 2022-07-25 | 2024-01-09 | 广东羚光新材料股份有限公司 | Nickel screen and preparation method and application thereof |
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