CN105603483A - Preparation method of titanium-based alloy high temperature oxidation resisting coating - Google Patents
Preparation method of titanium-based alloy high temperature oxidation resisting coating Download PDFInfo
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 51
- 239000000956 alloy Substances 0.000 title claims abstract description 51
- 238000000576 coating method Methods 0.000 title claims abstract description 43
- 239000011248 coating agent Substances 0.000 title claims abstract description 28
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 21
- 230000003647 oxidation Effects 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000010936 titanium Substances 0.000 title abstract description 23
- 229910052719 titanium Inorganic materials 0.000 title abstract description 17
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title abstract description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002243 precursor Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 5
- 239000002253 acid Substances 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 3
- 239000011159 matrix material Substances 0.000 claims description 13
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical group CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 9
- 238000004062 sedimentation Methods 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 229910000883 Ti6Al4V Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910004349 Ti-Al Inorganic materials 0.000 claims description 2
- 229910004692 Ti—Al Inorganic materials 0.000 claims description 2
- -1 alkyl silicate Chemical compound 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims 1
- 150000004702 methyl esters Chemical class 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 19
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 abstract description 15
- 239000000243 solution Substances 0.000 abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910002804 graphite Inorganic materials 0.000 abstract description 6
- 239000010439 graphite Substances 0.000 abstract description 6
- 238000001035 drying Methods 0.000 abstract description 5
- 239000000758 substrate Substances 0.000 abstract description 5
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 2
- 230000008021 deposition Effects 0.000 abstract 1
- 239000011259 mixed solution Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 229910010038 TiAl Inorganic materials 0.000 description 17
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 10
- 238000005498 polishing Methods 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 238000004070 electrodeposition Methods 0.000 description 7
- 229910052681 coesite Inorganic materials 0.000 description 6
- 229910052906 cristobalite Inorganic materials 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 6
- 229910052682 stishovite Inorganic materials 0.000 description 6
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 6
- 229910052905 tridymite Inorganic materials 0.000 description 6
- 244000137852 Petrea volubilis Species 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 235000019441 ethanol Nutrition 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000003026 anti-oxygenic effect Effects 0.000 description 2
- 238000005524 ceramic coating Methods 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 108010052322 limitin Proteins 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 238000010671 solid-state reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D9/00—Electrolytic coating other than with metals
- C25D9/04—Electrolytic coating other than with metals with inorganic materials
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention provides a preparation method of a titanium-based alloy high temperature oxidation resisting coating. The preparation method comprises the following steps that 1, surface oxide of a titanium-based alloy substrate is removed, and then the titanium-based alloy substrate is cleaned and dried; 2, absolute ethyl alcohol, water and a silicic acid alkyl ester precursor are mixed in proportion, the pH of the mixed solution is regulated to be 2.0-6.0 with acid, stirring is performed for 2-48 h at room temperature, and a precursor solution is obtained; 3, the prepared precursor solution is added into a two-electrode tank, the titanium-based alloy substrate is taken as a working electrode, a platinum sheet or graphite is taken as a counter electrode, the spacing distance of the electrodes is controlled to be 1-10 cm, the current density is controlled to be minus 0.1 mA.cm<-2>-minus 5.0 mA.cm<-2>, the deposition time is 30 s-2000 s, drying is performed at the temperature of 40 DEG C-150 DEG C after water washing is performed, and a micro-nano oxide coating is obtained; 4, heat treatment is performed on titanium-based alloy coated with the micro-nano oxide coating in air for 10-60 min at the temperature of 600 DEG C-700 DEG C, and then the titanium-based alloy high temperature oxidation resisting coating is prepared. According to the preparation method, the preparation technology is simple, the obtained coating has the excellent binding force with the substrate, and the high temperature oxidation resistance of titanium-aluminum alloy can be significantly improved.
Description
Technical field
The invention belongs to metal material resistance to high temperature oxidation field, be specifically related to a kind of titanium-base alloy high temperature coatingsPreparation method.
Technical background
Titanium-aluminium alloy has the advantages such as density is low, specific strength is high, elastic modelling quantity is high, high temperature and creep resistance ability is good, is a kind ofHave the high-temperature material of application prospect, be applied to the high temperature parts such as aero-engine high pressure pressure fan and turbo blade. SoAnd the actual serviceability temperature of titanium-aluminium alloy is limited in below 750 DEG C, due under higher temperature, titanium and aluminium and oxygen affineAbility is few, and that alloy surface forms is TiO2And Al2O3Mixed layer, the growth rate of oxide-film is very fast, easily shellsFall.
For overcoming above deficiency, Chinese scholars has adopted alloying, ion implantation, face coat and anodic oxidation etc.Method modification improves the service temperature of titanium-aluminium alloy. Alloy designs mainly comprises two aspects, the one, improve in TiAl alloyThe content of basic element Al, this is no doubt conducive to the improvement of its antioxygenic property, but Al content should not be too high, once otherwise separate outThe TiAl of fragility3To affect its mechanical property. The 2nd, by adding the third or multiple alloying element, as: Nb, Sb, Si,Cr, Y, although Mo etc. also can effectively improve the high-temperature oxidation resistance of TiAl alloy, the too high TiAl that conventionally can cause of additionAlloy mechanical property declines. Although ion implantation injection rate is controlled, repeatability better, the equipment that relates to is more expensive, produceEfficiency is lower, and the degree of depth that TiAl alloying component is changed is only confined to the more shallow scope in surface, and (< 1 μ m). And protective coating, asMetal coating MCrAl (Y), ceramic coating are (as SiO2、Al2O3And ZrO2Deng) and diffusion coating (as Al, Si etc.) although etc. canStop that as screen layer oxygen is to matrix permeability, but still have certain problem separately. Counterdiffusion between metal coating and matrixMore serious, hard crisp phase is easily separated out at interface, produces Ke Kendaer hole simultaneously, has seriously reduced the bond strength of coating and matrix;Ceramic coating internal stress is large and lower with substrate combinating strength; Diffusion coating and matrix thermal coefficient of expansion differ larger.
Summary of the invention
The object of the invention is, for existing titanium-aluminium alloy oxidation-resistance property deficiency, provides a kind of titanium-base alloy anti-heightThe preparation method of temperature oxide covering, the coating obtaining has significantly improved the antioxygenic property of titanium-base alloy under 900 DEG C of high temperature.
A preparation method for titanium-base alloy high temperature coatings, comprises the following steps:
1) first remove the oxide on surface of titanium-base alloy matrix, then clean, dry;
2) be (50-100) according to volume ratio: (50-100): (1～10) is by absolute ethyl alcohol, water and precursor silicic acid alkylEster mixes, and then adjusts mixed system pH to 2.0～6.0 with acid, under room temperature, stirs 2～48h, obtains precursor solution;
3) in two slot electrodes, add the precursor solution preparing, using titanium-base alloy matrix as working electrode, platinized platinum orGraphite is as to electrode, and electrode spacing is controlled at 1-10cm, controls current density to be-0.1mAcm-2～-5.0mA·cm-2EnterRow electro-deposition, sedimentation time is 30s～2000s, after having deposited by after working electrode washing in 40～150 DEG C of oven dry, at titaniumBase alloy surface obtains micro-nano oxide coating;
4) by be coated with titanium-base alloy heat treatment 10 at 600～700 DEG C in air of micro-nano oxide coating～60min, makes titanium-base alloy high temperature coatings.
Further, described titanium-base alloy is the titanium-base alloy containing aluminium.
Further, described titanium-base alloy is selected from Ti3-Al、Ti-Al、Ti-Al3、Ti-6Al-4V、TiAlNb、Ti-One in 47Al-2Cr-2Nb.
Further, step 1) in, oxide on surface is removed in the polishing of titanium-base alloy matrix by available sand paper; Cleaning reagent can be adoptedWith acetone, ethanol etc., preferably adopt and ultrasonicly repeatedly clean.
Further, the one in the preferred ethyl orthosilicate of described alkyl silicate (TEOS), methyl silicate (TMOS)Or the mixing of two kinds.
Further, step 2) in, the acid that regulates pH to use can be hydrochloric acid (HCl), nitric acid (HNO3) or acetic acid (HAc),Concentration is 0.5molL-1～2.0molL-1。
Further, step 3) in, be preferably-1.0mAcm of current density-2～-5.0mA·cm-2。
Further, step 3) in, sedimentation time is preferably 200s-600s.
Further, described preparation method is by step 1)～step 4) form.
The invention has the beneficial effects as follows:
(1) the present invention prepares micro/nano level SiO by electro-deposition techniques on titanium-base alloy surface2Coating, this micro-nanoRice SiO2There is chemical bonding effect in coating and matrix, thereby has excellent adhesion; Then in air low temperature (600～700 DEG C) heat treatment, in this heat treatment process, SiO2Can with matrix in Ti and Al element generation solid state reaction, at goldMetal surface forms continuously and fine and close glassy state protective layer, and this protective layer can stop airborne oxygen to spread to matrix, simultaneously resistanceStop the cation of metal inside to external diffusion, and then improve the high temperature oxidation resistance of titanium-base alloy.
(2) preparation technology of the present invention is simple, easy to operate, efficiency is high, be easy to realization.
Brief description of the drawings
Fig. 1 is that (curve 1 is naked TiAl alloy, and curve 2 is TiAl alloy for the kinetic curve of 900 DEG C of constant temperature oxidation 100hAccording to embodiment 4 in tetraethoxysilane-2.0mAcm-2Electro-deposition 300s gained sample under current density).
Fig. 2 be embodiment 4 prepare without heat treated SiO2The electron scanning micrograph of coating.
Fig. 3 is the electron scanning micrographs of embodiment 4 gained samples after 900 DEG C of constant temperature oxidation 100h.
Detailed description of the invention
With specific embodiment, technical scheme of the present invention is described further below, but protection scope of the present invention is not limitIn this:
Embodiment 1
First with sand paper, titanium-aluminium alloy sample (titanium al atomic ratio is 1:1) polishing is removed to oxide on surface, then successivelyUltrasonic cleaning 10min in acetone and ethanol, finally uses hot blast drying stand-by. Successively toward add in beaker 50mL absolute ethyl alcohol,50mL water, 1mL ethyl orthosilicate (TEOS), use 0.5molL-1HAc adjusts pH to 2.0 left and right, stirs 2h and obtain front body under room temperatureLiquid solution is stand-by. Taking precursor solution as electrolyte, do taking the titanium-aluminium alloy sample (titanium al atomic ratio is as 1:1) of polishing cleanedFor negative electrode, graphite electrode is as to electrode, and electrode spacing is controlled at 1cm, controls current density and is-0.1mAcm-2, sedimentation timeFor 1000s, after having deposited by working electrode with after deionized water rinsing in 40 DEG C of oven dry, obtain micro-nano oxide coating.Subsequently, by this titanium-base alloy that is coated with micro-nano oxide coating in air at 600 DEG C heat treatment 60min, makeHigh temperature coatings; Adopt the weightening finish of unit are after 900 DEG C of constant temperature oxidation 100h to assess its high temperature oxidation resistance, toolBody result is as table 1.
The naked TiAl alloy of table 1 and the TiAl alloy sample experimental result that is coated with high temperature coatings
| Sample | Weightening finish mg/cm2 |
| Naked TiAl alloy | 31.32 |
| Be coated with the TiAl alloy of high temperature coatings | 1.04 |
Embodiment 2
First with sand paper, titanium-aluminium alloy sample (titanium al atomic ratio is 3:1) polishing is removed to oxide on surface, then successivelyUltrasonic cleaning 10min in acetone and ethanol, finally uses hot blast drying stand-by. Successively toward add in beaker 100mL absolute ethyl alcohol,75mL water, 10mL methyl silicate (TMOS), use 2.0molL-1HNO3Adjust pH to 6.0 left and right, before stirring 6h under room temperature and obtainingBody solution for later use. Taking precursor solution as electrolyte, taking the titanium-aluminium alloy sample (titanium al atomic ratio is as 3:1) of polishing cleanedAs negative electrode, graphite electrode is as to electrode, and electrode spacing is controlled at 10cm, controls current density and is-5.0mAcm-2, when depositionBetween be 30s, after having deposited by working electrode with after deionized water rinsing in 150 DEG C of oven dry, obtain micro-nano oxide coating.Subsequently, by this titanium-base alloy that is coated with micro-nano oxide coating in air at 700 DEG C heat treatment 10min, makeHigh temperature coatings; High temperature oxidation resistance is assessed with embodiment 1, and experimental result is listed in table 2.
The naked TiAl alloy of table 2 and the Ti that is coated with high temperature coatings3Al alloy sample experimental result
| Sample | Weightening finish mg/cm2 |
| Naked TiAl alloy | 31.32 |
| Be coated with the Ti of high temperature coatings3Al alloy | 1.58 |
Embodiment 3
First with sand paper, titanium-aluminium alloy sample (titanium al atomic ratio is 3:1) polishing is removed to oxide on surface, then successivelyUltrasonic cleaning 10min in acetone and ethanol, finally uses hot blast drying stand-by. Successively toward add in beaker 75mL absolute ethyl alcohol,100mL water, 3mL ethyl orthosilicate (TEOS) and 2mL methyl silicate (TMOS), use 1.0molL-1HCl adjusts pH to 6.0 left sideThe right side, stirs 6h and obtains precursor solution for later use under room temperature. Taking precursor solution as electrolyte, the titanium-aluminium alloy examination of polishing cleanedSample (titanium al atomic ratio is 3:1) is as negative electrode, and graphite electrode is as to electrode, and electrode spacing is controlled at 5cm, controls current densityFor-5.0mAcm-2, sedimentation time is 30s, after having deposited by working electrode with after deionized water rinsing in 150 DEG C of oven dry,To micro-nano oxide coating. Subsequently, the titanium-base alloy that this is coated with to micro-nano oxide coating in air at 700 DEG CHeat treatment 10min, makes high temperature coatings; High temperature oxidation resistance is assessed with embodiment 1, and experimental result is listed in table 3.
The naked TiAl alloy of table 3 and the Ti that is coated with high temperature coatings3Al alloy sample experimental result
| Sample | Weightening finish mg/cm2 |
| Naked TiAl alloy | 31.32 |
| Be coated with the Ti of high temperature coatings3Al alloy | 1.28 |
Embodiment 4
First with sand paper, titanium-aluminium alloy sample (titanium al atomic ratio is 1:1) polishing is removed to oxide on surface, then successivelyUltrasonic cleaning 10min in acetone and ethanol, finally uses hot blast drying stand-by. Successively toward add in beaker 50mL absolute ethyl alcohol,50mL water, 5mL ethyl orthosilicate (TEOS), use 1.0molL-1HCl adjusts pH to 3.0 left and right, stirs 4h and obtain front body under room temperatureLiquid solution is stand-by. Taking precursor solution as electrolyte, titanium-aluminium alloy sample (titanium al atomic ratio the is 1:1) conduct of polishing cleanedNegative electrode, graphite electrode is as to electrode, and electrode spacing is controlled at 5cm, controls current density to be-2.0mAcm-2, sedimentation time is300s, after having deposited by working electrode with after deionized water rinsing in 100 DEG C of oven dry, obtain micro-nano oxide coating. WithAfter, by this titanium-base alloy that is coated with micro-nano oxide coating in air at 650 DEG C heat treatment 30min, make anti-High-temperature oxydation coating; High temperature oxidation resistance is assessed with embodiment 1, and experimental result is listed in table 4.
The naked TiAl alloy of table 4 and the TiAl alloy sample experimental result that is coated with high temperature coatings
Embodiment 5
Concrete steps are with embodiment 4, and difference is to have changed the titanium-aluminium alloy matrix using, and high temperature oxidation resistance is commentedEstimate same embodiment 1, experimental result is listed in table 5.
The different titanium-aluminium alloy matrix of table 5 experimental result
| Sample | Weightening finish mg/cm2 |
| Ti3-Al | 1.41 |
| Ti-Al3 | 0.74 |
| Ti-6Al-4V | 1.58 |
| Ti-47Al-2Cr-2Nb | 0.67 |
Embodiment 6
Concrete steps are with embodiment 4, and difference is to have changed SiO2Electrodeposition time, be respectively 100s, 200s,300s, 600s. High temperature oxidation resistance is assessed with embodiment 1, and experimental result is listed in table 6.
The different electrodeposition time experimental results of table 6
| Sample | Weightening finish mg/cm2 |
| 100s | 16.02 |
| 200s | 1.59 |
| 300s | 0.29 |
| 600s | 0.44 |
Embodiment 7
Concrete steps are with embodiment 4, and difference is to have changed SiO2Electro-deposition current density, is respectively-0.1mAcm-2、-0.5mAcm-2、-1.0mAcm-2、-2.0mAcm-2、-5.0mAcm-2. High temperature oxidation resistance is assessed with embodiment 1, experimentThe results are shown in table 7.
The different electro-deposition current density of table 7 experimental result
Embodiment 8
Concrete steps are with embodiment 4, and difference is that electrode is changed into platinized platinum. High temperature oxidation resistance assessment is with implementingExample 1, experimental result is listed in table 8.
The experimental result of table 8 difference to electrode
| Sample | Weightening finish mg/cm2 |
| Platinized platinum | 0.38 |
| Graphite | 0.29 |
Claims (8)
1. a preparation method for titanium-base alloy high temperature coatings, comprises the following steps:
1) first remove the oxide on surface of titanium-base alloy matrix, then clean, dry;
2) be (50-100) according to volume ratio: (50-100): (1～10) is mixed by absolute ethyl alcohol, water and precursor alkyl silicateClose, adjust pH of mixed to 2.0～6.0 with acid, under room temperature, stir 2～48h, obtain precursor solution;
3) in two slot electrodes, add the precursor solution preparing, using titanium-base alloy matrix as working electrode, platinized platinum or graphiteAs to electrode, electrode spacing is controlled at 1-10cm, controls current density to be-0.1mAcm-2～-5.0mA·cm-2Carry out electricityDeposition, sedimentation time is 30s～2000s, after washing, in 40～150 DEG C of oven dry, obtains micro-nano oxidation on titanium-base alloy surfaceThing coating;
4) by be coated with titanium-base alloy heat treatment 10 at 600～700 DEG C in air of micro-nano oxide coating～60min, makes titanium-base alloy high temperature coatings.
2. preparation method as claimed in claim 1, is characterized in that: described titanium-base alloy is the titanium-base alloy containing aluminium.
3. preparation method as claimed in claim 2, is characterized in that: described titanium-base alloy is selected from Ti3-Al、Ti-Al、Ti-Al3, one in Ti-6Al-4V, TiAlNb, Ti-47Al-2Cr-2Nb.
4. preparation method as claimed in claim 1, is characterized in that: described alkyl silicate is ethyl orthosilicate or positive siliconAcid methyl esters.
5. the preparation method as described in one of claim 1～4, is characterized in that: in step (3), current density is-1.0mA·cm-2～-5.0mA·cm-2。
6. the preparation method as described in one of claim 1～4, is characterized in that: in step (3), sedimentation time is 200s-600s。
7. preparation method as claimed in claim 5, is characterized in that: in step (3), sedimentation time is 200s-600s.
8. the preparation method as described in one of claim 1～4 or 7, is characterized in that: described preparation method is by step 1)～Step 4) composition.
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|---|---|---|---|---|
| CN106835227A (en) * | 2016-12-05 | 2017-06-13 | 浙江工业大学 | A kind of method that titanium-base alloy high temperature oxidation resistance is improved based on halide effect and ceramic coating |
| CN106906505A (en) * | 2016-12-31 | 2017-06-30 | 浙江工业大学 | It is a kind of that the method that ceramic coating improves titanium-base alloy high temperature oxidation resistance is obtained based on halide effect and pretreatment |
| CN106906504A (en) * | 2016-12-31 | 2017-06-30 | 浙江工业大学 | One kind is based on halide effect and SiO2The method that waterglass composite ceramic coat improves titanium-base alloy high temperature oxidation resistance |
| CN108102447A (en) * | 2017-11-25 | 2018-06-01 | 浙江大学 | A kind of preparation method and its usage of silica doped modified protective coating |
| CN108588796A (en) * | 2018-04-09 | 2018-09-28 | 浙江工业大学 | A kind of ceramic coating and its preparation process of disperse fine particle of noble metal |
| CN108588771A (en) * | 2018-04-03 | 2018-09-28 | 浙江工业大学 | A kind of composite ceramic coat and its preparation process of the middle layer containing noble metal |
| CN109402693A (en) * | 2018-10-25 | 2019-03-01 | 浙江大学 | Load the Preparation method and use of the mesoporous silicon oxide based superhydrophobic thin films of corrosion inhibiter |
| WO2019091096A1 (en) * | 2017-11-13 | 2019-05-16 | 吉科猛 | Nanoporous metal/metal oxide hybrid structure material, preparation, and energy storage application |
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| CN113278973A (en) * | 2021-05-24 | 2021-08-20 | 中山大学 | Titanium-based alloy part with nickel-modified silicon-based protective coating and preparation method thereof |
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| CN106835227A (en) * | 2016-12-05 | 2017-06-13 | 浙江工业大学 | A kind of method that titanium-base alloy high temperature oxidation resistance is improved based on halide effect and ceramic coating |
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| CN106906505A (en) * | 2016-12-31 | 2017-06-30 | 浙江工业大学 | It is a kind of that the method that ceramic coating improves titanium-base alloy high temperature oxidation resistance is obtained based on halide effect and pretreatment |
| CN106906504A (en) * | 2016-12-31 | 2017-06-30 | 浙江工业大学 | One kind is based on halide effect and SiO2The method that waterglass composite ceramic coat improves titanium-base alloy high temperature oxidation resistance |
| WO2019091096A1 (en) * | 2017-11-13 | 2019-05-16 | 吉科猛 | Nanoporous metal/metal oxide hybrid structure material, preparation, and energy storage application |
| CN108102447A (en) * | 2017-11-25 | 2018-06-01 | 浙江大学 | A kind of preparation method and its usage of silica doped modified protective coating |
| CN108102447B (en) * | 2017-11-25 | 2020-01-10 | 浙江大学 | Preparation method and application of silica-doped modified protective coating |
| CN108588771A (en) * | 2018-04-03 | 2018-09-28 | 浙江工业大学 | A kind of composite ceramic coat and its preparation process of the middle layer containing noble metal |
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| CN108588796B (en) * | 2018-04-09 | 2020-01-10 | 浙江工业大学 | Ceramic coating dispersed with noble metal particles and preparation process thereof |
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| CN109402693B (en) * | 2018-10-25 | 2020-10-16 | 浙江大学 | Preparation method and application of corrosion inhibitor-loaded mesoporous silica super-hydrophobic film |
| CN115516126A (en) * | 2020-07-01 | 2022-12-23 | 欧瑞康表面处理解决方案股份公司普费菲孔 | Protective layer (environmental barrier layer) for titanium-aluminium materials against environmental influences |
| CN112899756A (en) * | 2021-01-14 | 2021-06-04 | 中山大学·深圳 | Preparation method of titanium alloy SiOC coating |
| CN113278973A (en) * | 2021-05-24 | 2021-08-20 | 中山大学 | Titanium-based alloy part with nickel-modified silicon-based protective coating and preparation method thereof |
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