CN112095063A - Titanium alloy surface coating and preparation method thereof - Google Patents
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 82
- 238000000576 coating method Methods 0.000 title claims abstract description 50
- 239000011248 coating agent Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 31
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000007747 plating Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 238000009792 diffusion process Methods 0.000 claims abstract description 13
- 230000005672 electromagnetic field Effects 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 238000004321 preservation Methods 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000005498 polishing Methods 0.000 claims abstract description 7
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 12
- -1 titanium-aluminum compound Chemical class 0.000 claims description 9
- 235000011164 potassium chloride Nutrition 0.000 claims description 6
- 239000001103 potassium chloride Substances 0.000 claims description 6
- 239000011780 sodium chloride Substances 0.000 claims description 6
- 150000003841 chloride salts Chemical group 0.000 claims description 3
- 239000002345 surface coating layer Substances 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 description 7
- 239000000956 alloy Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 125000004429 atom Chemical group 0.000 description 3
- 125000001309 chloro group Chemical class Cl* 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
- 238000000724 energy-dispersive X-ray spectrum Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
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- 238000010183 spectrum analysis Methods 0.000 description 1
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- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Images
Classifications
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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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/12—Aluminium or alloys based thereon
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
- C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
- C23C2/285—Thermal after-treatment, e.g. treatment in oil bath for remelting the coating
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/30—Fluxes or coverings on molten baths
Abstract
The invention provides a titanium alloy surface coating and a preparation method thereof, wherein the preparation method comprises the following steps: cutting the titanium alloy into sheets, polishing, grinding and ultrasonically cleaning for 8-12min to obtain a pretreated titanium alloy; melting an aluminum block at the temperature of 740-780 ℃, adding a covering agent, preserving heat for 10-30min to obtain aluminum liquid, putting the pretreated titanium alloy into the aluminum liquid for dip-plating for 1-3min, simultaneously applying an alternating electromagnetic field of 30-40mT, and performing air cooling to obtain a middle sample; heating the resistance furnace to 780-820 ℃, preserving heat for 25-35min, then placing an intermediate sample, performing diffusion heat preservation for 12-14h, and performing air cooling to obtain the titanium alloy surface coating. The invention also discloses a titanium alloy surface coating prepared by the method. The preparation method provided by the invention is simple to operate, the obtained titanium alloy surface coating has good binding force and is not easy to fall off, and the problems of easy falling off of the coating, poor comprehensive performance, long production period and the like in the prior art are effectively solved.
Description
Technical Field
The invention belongs to the technical field of titanium alloy coating preparation, and particularly relates to a titanium alloy surface coating and a preparation method thereof.
Background
With the rapid development of the fields of aviation, aerospace, war industry and the like in China, the application of the titanium alloy material is more and more concerned by people. The titanium alloy material has excellent performance, good comprehensive mechanical property and strong corrosion resistance, can be used as one of main light structural materials and is often used for manufacturing various casings of aircraft landing gear, engines, gas compressors and the like. Has high corrosion resistance, and is widely applied to the fields of biomedical science and technology, navigation and the like. Titanium alloys, while having many advantages, have a number of disadvantages that limit their range of use. Titanium alloys have low hardness and are prone to adhesive wear, abrasive wear, and the like. In a high-temperature environment, an oxide film generated by self oxidation is easy to fall off and cannot play a role in protection, and the mechanical property is seriously reduced at the moment, so that the part is finally failed to cause serious accidents. Therefore, the research on the surface treatment of the titanium alloy is of great significance.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the titanium alloy surface coating and the preparation method thereof, the preparation method is simple to operate and low in production cost, the obtained titanium alloy surface coating has good bonding force and is not easy to fall off, and the problems that the coating is easy to fall off, the comprehensive performance is poor, the production period is long and the like in the prior art are effectively solved.
In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows: the preparation method of the titanium alloy surface coating is provided, and comprises the following steps:
(1) cutting the titanium alloy into sheets, polishing, grinding and ultrasonically cleaning for 8-12min to obtain a pretreated titanium alloy;
(2) melting an aluminum block at the temperature of 740-780 ℃, adding a covering agent, preserving heat for 10-30min to obtain aluminum liquid, putting the pretreated titanium alloy obtained in the step (1) into the aluminum liquid, dip-plating for 1-3min at the temperature of 760 ℃, simultaneously applying an alternating electromagnetic field of 30-40mT to form a titanium-aluminum compound, and air-cooling to obtain a middle sample;
(3) and (3) heating the resistance furnace to 780-cake 820 ℃, preserving the heat for 25-35min, then placing the intermediate sample obtained in the step (2) for diffusion and heat preservation for 12-14h, and air cooling to obtain the titanium alloy surface coating.
Further, the titanium alloy is TA15 titanium alloy.
Further, in the step (1), the titanium alloy was cut into a sheet shape with a thickness of 3 mm.
Further, in the step (2), the aluminum block is melted at the temperature of 760 ℃, and then a covering agent is added for heat preservation for 20 min.
Further, the covering agent is a chloride salt of potassium chloride and sodium chloride each 50 wt%.
Further, in the step (3), the resistance furnace is heated to 800 ℃ and is kept warm for 30 min.
The titanium alloy surface coating prepared by the preparation method of the titanium alloy surface coating.
In summary, the invention has the following advantages:
1. the preparation method provided by the invention is simple to operate and low in production cost, the obtained titanium alloy surface coating is good in binding force and not easy to fall off, the hardness, wear resistance and high-temperature oxidation resistance of the alloy are improved, the coating structure is improved, no obvious penetrating crack exists, the hardness and wear resistance of the titanium alloy are improved, and the problems that the coating is easy to fall off and the comprehensive performance is poor in the prior art are effectively solved.
2. During preparation, firstly, the titanium alloy is pretreated, which is to remove oxide skin on the surface of the titanium alloy and facilitate subsequent treatment; then dip-plating the pretreated titanium alloy under the action of aluminum liquid and an alternating electromagnetic field, wherein the alternating electromagnetic field can increase convection, so that the thickness of a plating layer is about 1.5mm, the atomic diffusion rate of the plating layer and a base material can be increased, the plating layer and the base material are better combined, the coating material is prevented from cracking and falling off in the later use process, and the effects of improving the structure, refining grains and shortening the production period are achieved; finally, the coating can be subjected to high-temperature diffusion by diffusion and heat preservation at high temperature, the surface structure is refined, and a stable titanium-aluminum compound is formed.
3. The surface hot aluminum dipping method of titanium alloy is a surface treatment method, which immerses titanium alloy parts in molten aluminum at a temperature above the melting point of pure aluminum to ensure that the titanium alloy is not melted, and a series of thermochemical reactions are carried out at a high temperature to form a very thin protective coating. The coating layer is subjected to high-temperature thermal diffusion at a higher temperature, so that the surface structure can be refined, and a stable titanium-aluminum compound is formed on the surface. The titanium-aluminum compound has high hardness and wear resistanceAnd the outer surface is easy to form compact Al2O3Preventing oxidation of internal tissues at high temperatures. The method can improve the hardness, the wear resistance and the high-temperature oxidation resistance of the alloy. The hot dip aluminum plating process is applied to the field of titanium alloy, and has low production cost and simple operation; al and Ti can be induced to generate a series of reactions in situ by using the stirring action of an external alternating electromagnetic field in the dip plating process, and liquid-phase Al and solid-state Ti atoms react at high temperature to generate a titanium-aluminum compound, so that the dip plating time can be greatly shortened, and the production period can be shortened; in addition, in the process of coating solidification, the stirring action can improve the atomic diffusion rate of the coating and the matrix material, so that the coating and the matrix material are better combined, the coating material is prevented from cracking and falling off in the later use process, the matrix alloy can be effectively protected, and the high-temperature oxidation resistance and the surface wear resistance of the matrix alloy are improved.
4. Immersion plating in an electromagnetic field: the alternating magnetic field B is generated by electrifying power frequency alternating current into the induction coil, and simultaneously, the magnetic field excites the molten metal to generate an induced current J, so that the melt is subjected to the action of electromagnetic volume force J multiplied by B, and the effect of electromagnetic stirring is achieved on the whole melt. On one hand, the forced convection generated by electromagnetic stirring periodically changes the convection direction of the melt, so that the convection is stronger, the diffusion speed between atoms is improved, the filling of liquid metal to a matrix is promoted to a great extent, Ti and Al atoms are better combined in situ, a firmer and continuous phase is formed, and obvious air holes and cracks are not generated. Meanwhile, the dendritic crystal is broken by the shearing force generated by the electromagnetic force, and the effects of improving the structure and refining the crystal grains are achieved. On the other hand, the alternating electromagnetic field changes the heat transfer and the flow of the melt and also changes the distribution of the temperature field of the coating, the heat is diffused more uniformly to the periphery, the material exchange of the coating is enhanced to a certain degree, and the generation of air holes and cavities is obviously reduced. Meanwhile, the immersion plating time can be shortened, and the production period is accelerated.
Drawings
FIG. 1 is a microstructure diagram of a surface coating layer of a titanium alloy obtained in example 2;
FIG. 2 is a microstructure diagram of a surface coating of a titanium alloy obtained in a comparative example;
FIG. 3 shows the EDS spectrum analysis of the titanium alloy surface coating obtained in example 2;
FIG. 4 shows the EDS spectrum analysis result of the titanium alloy surface coating obtained in the comparative example.
Detailed Description
Example 1
A preparation method of a titanium alloy surface coating comprises the following steps:
(1) cutting the TA15 titanium alloy into sheets with the thickness of 3mm, polishing, grinding and ultrasonically cleaning for 8min to obtain a pretreated titanium alloy;
(2) melting an aluminum block at the temperature of 740 ℃, adding covering agents which are chlorine salts with the concentration of 50 wt% of each of potassium chloride and sodium chloride, and preserving the heat for 10min to obtain aluminum liquid, putting the pretreated titanium alloy obtained in the step (1) into the aluminum liquid, dip-plating the pretreated titanium alloy for 1min at the temperature of 760 ℃, simultaneously applying an alternating electromagnetic field of 30mT to form a titanium-aluminum compound, and air-cooling to obtain a middle sample;
(3) and (3) heating the resistance furnace to 780 ℃ and preserving heat for 25min, then putting the intermediate sample obtained in the step (2) into the resistance furnace, and carrying out diffusion heat preservation for 12h, and carrying out air cooling to obtain a titanium alloy surface coating.
Example 2
A preparation method of a titanium alloy surface coating comprises the following steps:
(1) cutting the TA15 titanium alloy into sheets with the thickness of 3mm, polishing, grinding and ultrasonically cleaning for 10min to obtain a pretreated titanium alloy;
(2) melting an aluminum block at the temperature of 760 ℃, adding covering agents which are chlorine salts with the concentration of 50 wt% of each of potassium chloride and sodium chloride, and keeping the temperature for 20min to obtain aluminum liquid, putting the pretreated titanium alloy obtained in the step (1) into the aluminum liquid, dip-plating the titanium alloy for 2min at the temperature of 760 ℃, simultaneously applying an alternating electromagnetic field of 35mT to form a titanium-aluminum compound, and air-cooling to obtain a middle sample;
(3) and (3) heating the resistance furnace to 800 ℃, preserving heat for 30min, then putting the intermediate sample obtained in the step (2) into the resistance furnace, and carrying out diffusion heat preservation for 13h, and carrying out air cooling to obtain the titanium alloy surface coating.
Example 3
A preparation method of a titanium alloy surface coating comprises the following steps:
(1) cutting the TA15 titanium alloy into sheets with the thickness of 3mm, polishing, grinding and ultrasonically cleaning for 12min to obtain a pretreated titanium alloy;
(2) melting an aluminum block at 780 ℃, adding covering agents which are chloride salts with the concentration of 50 wt% of each of potassium chloride and sodium chloride, and keeping the temperature for 30min to obtain aluminum liquid, putting the pretreated titanium alloy obtained in the step (1) into the aluminum liquid, dip-plating the pretreated titanium alloy for 3min at 760 ℃, simultaneously applying an alternating electromagnetic field of 40mT to form a titanium-aluminum compound, and air-cooling to obtain a middle sample;
(3) and (3) heating the resistance furnace to 820 ℃, preserving heat for 35min, then placing the intermediate sample obtained in the step (2) for diffusion and heat preservation for 14h, and air cooling to obtain the titanium alloy surface coating.
Comparative example
A preparation method of a titanium alloy surface coating comprises the following steps:
(1) cutting the TA15 titanium alloy into sheets with the thickness of 3mm, polishing, grinding and ultrasonically cleaning for 10min to obtain a pretreated titanium alloy;
(2) melting an aluminum block at the temperature of 760 ℃, adding covering agents which are chlorine salts with the weight percentage of 50 percent of each of potassium chloride and sodium chloride, and preserving heat for 20min to obtain aluminum liquid, putting the pretreated titanium alloy obtained in the step (1) into the aluminum liquid for dip plating for 2min, and air cooling to obtain a middle sample;
(3) and (3) heating the resistance furnace to 800 ℃, preserving heat for 30min, then putting the intermediate sample obtained in the step (2) into the resistance furnace, and carrying out diffusion heat preservation for 13h, and carrying out air cooling to obtain the titanium alloy surface coating.
Examples of the experiments
The titanium alloy surface coatings obtained in example 2 and comparative example were observed with a microscope, and the results are shown in FIGS. 1-2; EDS energy spectrum analysis was performed, and the results are shown in FIGS. 3 to 4. In fig. 2, the right side of each microstructure is a surface coating.
As can be seen from FIGS. 1-2, the titanium alloy obtained by the present invention has uniform and fine surface coating structure, no obvious cracks, no obvious defects such as holes, etc.; in the comparative example, obvious cracks can be seen in the plating layer obtained by dip plating in the alternating electromagnetic field, wherein penetrating cracks are formed at a plurality of positions, the service life of the plating layer is seriously influenced, the protective effect on the matrix titanium alloy cannot be achieved, and the defects such as tissue holes and the like are obvious.
As can be seen from FIGS. 3 to 4, the plating layers obtained in the comparative examples contain Al, Ti and a small amount of Fe as main elements; the main elements of the titanium alloy surface coating obtained by the invention are Al, Ti and a small amount of Fe, and the content of the Fe element in the coating area is changed suddenly, because the Fe element is segregated under the action of an alternating electromagnetic field and moves from a matrix to the coating direction.
While the present invention has been described in detail with reference to the illustrated embodiments, it should not be construed as limited to the scope of the present patent. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
Claims (7)
1. The preparation method of the titanium alloy surface coating is characterized by comprising the following steps:
(1) cutting the titanium alloy into sheets, polishing, grinding and ultrasonically cleaning for 8-12min to obtain a pretreated titanium alloy;
(2) melting an aluminum block at the temperature of 740-780 ℃, adding a covering agent, preserving heat for 10-30min to obtain aluminum liquid, putting the pretreated titanium alloy obtained in the step (1) into the aluminum liquid, dip-plating for 1-3min at the temperature of 760 ℃, simultaneously applying an alternating electromagnetic field of 30-40mT to form a titanium-aluminum compound, and air-cooling to obtain a middle sample;
(3) and (3) heating the resistance furnace to 780-cake 820 ℃, preserving the heat for 25-35min, then placing the intermediate sample obtained in the step (2) for diffusion and heat preservation for 12-14h, and air cooling to obtain the titanium alloy surface coating.
2. The method of preparing a titanium alloy surface coating according to claim 1, wherein said titanium alloy is TA15 titanium alloy.
3. The method of preparing a titanium alloy surface coating according to claim 1, wherein in the step (1), the titanium alloy is cut into a sheet shape having a thickness of 3 mm.
4. The method of claim 1, wherein in step (2), the aluminum block is melted at a temperature of 760 ℃, and then a covering agent is added and the temperature is maintained for 20 min.
5. The method of producing a titanium alloy surface coating according to claim 1 or 4, wherein in the step (2), the covering agent is a chloride salt containing 50 wt% of each of potassium chloride and sodium chloride.
6. The method for preparing the titanium alloy surface coating according to claim 1, wherein in the step (3), the electric resistance furnace is heated to 800 ℃ and is kept for 30 min.
7. The titanium alloy surface coating layer produced by the method for producing a titanium alloy surface coating layer according to any one of claims 1 to 6.
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| CN113699521A (en) * | 2021-09-01 | 2021-11-26 | 成都航空职业技术学院 | High-performance titanium alloy surface coating and preparation method thereof |
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|---|---|---|---|---|
| CN113215567A (en) * | 2021-05-08 | 2021-08-06 | 成都航空职业技术学院 | Method for improving binding force of Ti-Al coating on surface of TA15 titanium alloy and coating prepared by method |
| CN113215567B (en) * | 2021-05-08 | 2023-01-24 | 成都航空职业技术学院 | Method for improving binding force of Ti-Al coating on surface of TA15 titanium alloy and coating prepared by method |
| CN113699521A (en) * | 2021-09-01 | 2021-11-26 | 成都航空职业技术学院 | High-performance titanium alloy surface coating and preparation method thereof |
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Application publication date: 20201218 |