CN110499484B - Titanium alloy in-situ self-generated aluminum-silicon gradient hot-dip coating and preparation method thereof - Google Patents
Titanium alloy in-situ self-generated aluminum-silicon gradient hot-dip coating and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
- C23C10/20—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions only one element being diffused
- C23C10/22—Metal melt containing the element to be diffused
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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
Abstract
The invention relates to an in-situ self-generated aluminum-silicon gradient hot-dip coating and a preparation method thereof. The titanium alloy in-situ authigenic aluminum-silicon gradient hot-dip coating layer is a titanium-aluminum-silicon alloy compound layer and aluminum-silicon component gradient alloy-containing coating layer which is obtained by carrying out hot-dip coating on a titanium alloy in-situ authigenic aluminum-silicon component gradient molten pool and carrying out diffusion reaction. By the preparation method, dense Ti (Al, Si) with solid solution silicon atoms is formed on the surface of the titanium alloy in sequence3A mesophase layer,τ 2Phase + Al-Si liquid phase: (L- (Al, Si)) phase layer, containing a silicon concentration gradientLA layer of- (Al, Si) phase. The gradient hot dip coating of the titanium alloy in-situ authigenic aluminum-silicon combines the advantages of three methods, namely a hot dip coating method, a cast-infiltration method and an in-situ reaction authigenic composite material method, and the coating is compact Ti (Al, Si)3Mesophase layers andLthe- (Al, Si) phase layer is easy to form aluminum oxide and silicon oxide, the high-temperature oxidation resistance of the coating is improved, the thermal stability of the coating is good, the preparation process is simple, the cost is low, the service temperature of a high-temperature titanium alloy workpiece can be greatly improved, and the service life of the high-temperature titanium alloy workpiece can be greatly prolonged.
Description
Technical Field
The invention relates to the field of hot dip coating, in particular to a titanium alloy in-situ self-generated aluminum-silicon gradient hot dip coating and a preparation method thereof.
Background
The titanium alloy has the advantages of high strength, high hardness, small density, good corrosion resistance and heat resistance, and the like. In the current advanced aeroengine, the high-temperature titanium alloy accounts for 25-40% of the total weight of the engine, but the titanium alloy has a thermal barrier temperature at 600 ℃. That is, when the service temperature of the titanium alloy is higher than 600 ℃, the high temperature oxidation resistance of the titanium alloy is sharply reduced, which is one of the important reasons for limiting the development of the titanium alloy. In order to improve the oxidation resistance of titanium alloy, various methods are adopted to modify the surface of titanium alloy, and an aluminum-plated coating is formed on the surface of titanium alloy initially, so that compact TiAl is hopefully obtained3Phase layers and protective layers of aluminum oxide, and TiAl3Is the only phase layer which can be oxidized to form aluminum oxide in all Ti-Al intermediate phases. But because multi-phase layers are generated in the hot dip plating process, certain stress appears at high temperature due to mismatching of phase structures, microhardness, thermal expansion coefficients and the like between different coatings or between the coatings and a substrate, so that the hot dip plating process has the advantages of high temperature resistance, high heat resistance and the likeThe obtained coating has cracks, exposes the matrix in the atmosphere, and finally the coating cracks and falls off and loses the protection effect on the matrix. The addition of Si to aluminum not only can produce silicon dioxide to improve high temperature oxidation resistance, but also can reduce the problem of mismatched thermal expansion coefficients. But a multiphase layer structure still appears, and improper control of Si concentration can cause that TiAl can not be formed3And (4) phase layer. Therefore, a new titanium alloy Al-Si gradient coating is developed, and only TiAl is used3A secondary solid solution phase layer,τ 2The phase layer and the Al-Si liquid phase greatly reduce the cracking of the coating and improve the high-temperature oxidation resistance of the coating.
Disclosure of Invention
Based on the above, the invention aims to provide a titanium alloy in-situ self-generated aluminum-silicon gradient hot-dip coating which has the characteristics of good thermal stability, high compactness, good oxidation resistance, easiness in production and processing, low cost and the like.
The technical scheme adopted by the invention is as follows
The gradient hot dip coating of in-situ autogenous Al-Si of titanium alloy is prepared through forming compact solid solution Si atoms of Ti (Al, Si) on the surface of titanium alloy3A mesophase layer,τ 2Phase CLOf (Al, Si) phase layers, silicon concentration gradientsLA coating of a layer of (Al, Si) phase.
The in-situ autogenous aluminum-silicon gradient hot-dip coating formed by the invention is Ti (Al, Si)3The intermediate phase layer is tightly combined with the matrix, and is compact and crack-free;τ 2phase CLThe (Al, Si) phase layer being dependent on Ti (Al, Si)3Intermediate phase layer, bulk formτ 2Phase is dispersed and distributed inLIn the (Al, Si) phase; the silicon concentration of the outermost layer gradually increases from the inside toward the outside.
The gradient hot dip coating of the titanium alloy in-situ authigenic aluminum-silicon combines the advantages of three methods, namely a hot dip coating method, a cast-infiltration method and an in-situ reaction authigenic composite material method, and the coating is compact Ti (Al, Si)3Mesophase layers andLthe- (Al, Si) phase layer is easy to form aluminum oxide and silicon oxide, the high-temperature oxidation resistance of the coating is improved, the thermal stability of the coating is good, the preparation process is simple, the cost is low, and the service temperature of the high-temperature titanium alloy workpiece can be greatly improvedDegree and service life.
According to actual use requirements, the gradient phase structure of the described in-situ authigenic aluminum-silicon gradient hot-dip coating can be variously designed, and the silicon concentration gradient in the aluminum-silicon alloy liquid and the thickness of the Ti-Al-Si compound phase layer can be controlled by controlling the hot-dip coating temperature and the hot-dip coating time. Therefore, the in-situ authigenic aluminum-silicon gradient hot-dip coating has good controllability.
Another object of the present invention is to provide a method for preparing an in-situ self-generated aluminum-silicon gradient coating of a titanium alloy, which comprises the following steps:
(1) heating a high-purity silica quartz glass vessel which is enlarged by 1.2-1.3 times according to the shape of a titanium alloy workpiece to 800-900 ℃ for preheating and heat preservation;
(2) polishing the surface of a titanium alloy workpiece to be flat, removing oxide skin and oil stain by using an acid washing and alkali washing method, and drying at low temperature for later use;
(3) pouring the pure aluminum liquid at 800 ℃ into the high-purity silica quartz glass ware in the step (1), standing and preserving heat;
(4) immediately immersing the titanium alloy workpiece in the step (2) into the aluminum melt of the high-purity silica quartz glass ware in the step (3), and standing at the temperature of 800-900 ℃ for thermal diffusion reaction;
(5) controlling the hot dip coating time of the step (4) within the range of 0.2-2 hours, and ensuring that the aluminum liquid reacts with the titanium in the matrix to generate TiAl3The intermediate phase layer reacts with silicon dioxide to generate silicon atoms which are diffused to the matrix in the aluminum liquid, and ensures that aluminum silicon forms an aluminum silicon gradient coating on the surface of the titanium alloy;
(6) and (3) after hot dipping for a certain time, rapidly drawing out the titanium alloy workpiece in the step (5), throwing away excessive liquid phase on the surface, and performing water quenching to obtain the titanium alloy in-situ authigenic aluminum-silicon gradient hot-dip coating of the claim 1-3.
According to the invention, the silicon concentration gradient in the aluminum-silicon alloy liquid and the thickness of the Ti-Al-Si compound phase layer are controlled by controlling the hot dipping temperature and the hot dipping time, so that an in-situ self-generated aluminum-silicon gradient hot dipping coating is formed on the surface of the titanium alloy, and the coating has the characteristics of good thermal stability, high compactness, good oxidation resistance, easiness in production and processing, low cost and the like.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a flow chart of the preparation of the in-situ autogenous aluminum silicon gradient hot dip coating of the present invention;
FIG. 2 is a cross-sectional profile of the in-situ autogenous aluminum silicon gradient hot dip coating made in example 1;
FIG. 3 is a microstructure topography of the in situ autogenous Al-Si gradient hot dip coating made in example 1;
FIG. 4 is a microstructure topography of the in situ autogenous aluminum silicon gradient hot dip coating made in example 2;
FIG. 5 is a microstructure topography of the in situ autogenous Al-Si gradient hot dip coating made in example 3;
fig. 6 is a graph of the oxidation resistance of the in-situ autogenous aluminum silicon gradient hot dip coating prepared in example 1.
Detailed Description
According to actual use requirements, the gradient phase structure of the described in-situ authigenic aluminum-silicon gradient hot-dip coating can be variously designed, and the silicon concentration gradient in the aluminum-silicon alloy liquid and the thickness of the Ti-Al-Si compound phase layer can be controlled by controlling the hot-dip coating temperature and the hot-dip coating time. Therefore, the in-situ authigenic aluminum-silicon gradient hot-dip coating has good controllability.
As shown in fig. 1, after completing the design of the gradient phase structure, the titanium alloy in-situ autogenous aluminum-silicon gradient hot dip coating is prepared according to the following steps:
(1) heating a high-purity silica quartz glass vessel which is enlarged by 1.2-1.3 times according to the shape of a titanium alloy workpiece to 800-900 ℃ for preheating and heat preservation;
(2) polishing the surface of a titanium alloy workpiece to be flat, removing oxide skin and oil stain by using an acid washing and alkali washing method, and drying at low temperature for later use;
(3) pouring the pure aluminum liquid at 800 ℃ into the high-purity silica quartz glass ware in the step (1), standing and preserving heat;
(4) immediately immersing the titanium alloy workpiece in the step (2) into the aluminum melt of the high-purity silica quartz glass ware in the step (3), and standing at the temperature of 800-900 ℃ for thermal diffusion reaction;
(5) controlling the hot dip coating time of the step (4) within the range of 0.2-2 hours, and ensuring that the aluminum liquid reacts with the titanium in the matrix to generate TiAl3The intermediate phase layer reacts with silicon dioxide to generate silicon atoms which are diffused to the matrix in the aluminum liquid, and ensures that aluminum silicon forms an aluminum silicon gradient coating on the surface of the titanium alloy;
(6) and (3) after hot dipping for a certain time, rapidly drawing out the titanium alloy workpiece in the step (5), throwing away excessive liquid phase on the surface, and performing water quenching to obtain the titanium alloy in-situ authigenic aluminum-silicon gradient hot-dip coating of the claim 1-3.
Example 1
(1) Heating a high-purity silica quartz glass tube amplified by 1.2 times of the proportion according to a TC4 titanium alloy round bar to 800 ℃ for preheating and heat preservation;
(2) polishing the surface of a TC4 titanium alloy round bar to be flat, removing oxide skin and oil stain by using an acid washing and alkali washing method, and drying at low temperature for later use;
(3) pouring the pure aluminum liquid at 800 ℃ into the high-purity silica quartz glass tube in the step (1), standing and preserving heat;
(4) immediately immersing the TC4 titanium alloy round bar in the step (2) into the aluminum melt of the high-purity silica quartz glass tube in the step (3), and standing at 800 ℃ for thermal diffusion reaction;
(5) controlling the hot dip coating time of the step (4) to be 1 hour, and ensuring that the aluminum liquid reacts with the titanium in the TC4 matrix to generate TiAl3The intermediate phase layer reacts with silicon dioxide to generate silicon atoms which are diffused to the matrix in the aluminum liquid, and ensures that aluminum silicon forms an aluminum silicon gradient coating on the surface of the titanium alloy;
(6) and (3) after hot dipping for 1 hour, rapidly drawing out the TC4 titanium alloy round bar in the step (5), throwing away excessive liquid phase on the surface, and performing water quenching to obtain the titanium alloy in-situ authigenic aluminum-silicon gradient hot-dip coating of the claim 1-3.
(7) The macroscopic structure is shown in fig. 2, the microscopic structure is shown in fig. 3,the TC4 titanium alloy surface is sequentially formed with dense Ti (Al, Si) with solid solution silicon atoms3A mesophase layer,τ 2Phase CLOf (Al, Si) phase layers, silicon concentration gradientsLA layer of- (Al, Si) phase.
(8) 11 obtained TC4 titanium alloy samples with in-situ authigenic aluminum-silicon gradient hot-dip coating are selected to be subjected to 800 ℃ continuous air oxidation experiment, and meanwhile, 11 uncoated TC4 titanium alloy samples are prepared to be subjected to 800 ℃ continuous air oxidation comparison experiment. A sample is taken every 5, 10, 15, 20, 30, 40, 50, 60, 75, 95 and 120 hours to measure the oxidation weight gain, and the obtained oxidation weight gain curve is shown in FIG. 6. As can be seen, the coated samples exhibited excellent high temperature oxidation resistance.
Example 2
(1) Heating a high-purity silica quartz glass tube amplified by 1.2 times of the proportion according to a TC4 titanium alloy round bar to 800 ℃ for preheating and heat preservation;
(2) polishing the surface of a TC4 titanium alloy round bar to be flat, removing oxide skin and oil stain by using an acid washing and alkali washing method, and drying at low temperature for later use;
(3) pouring the pure aluminum liquid at 800 ℃ into the high-purity silica quartz glass tube in the step (1), standing and preserving heat;
(4) immediately immersing the TC4 titanium alloy round bar in the step (2) into the aluminum melt of the high-purity silica quartz glass tube in the step (3), and standing at 800 ℃ for thermal diffusion reaction;
(5) controlling the hot dip coating time of the step (4) to be 2 hours, and ensuring that the aluminum liquid reacts with the titanium in the TC4 matrix to generate TiAl3The intermediate phase layer reacts with silicon dioxide to generate silicon atoms which are diffused to the matrix in the aluminum liquid, and ensures that aluminum silicon forms an aluminum silicon gradient coating on the surface of the titanium alloy;
(6) and (3) after hot dipping for 2 hours, quickly drawing out the TC4 titanium alloy round bar in the step (5), throwing away excessive liquid phase on the surface, and performing water quenching to obtain the titanium alloy in-situ authigenic aluminum-silicon gradient hot-dip coating of the claim 1-3.
(7) The microstructure is shown in figure 4, and the TC4 titanium alloy surface sequentially forms compact solid solution silicon atom Ti (Al, Si)3A mesophase layer,τ 2Phase CLOf (Al, Si) phase layers, silicon concentration gradientsLA layer of- (Al, Si) phase.
Example 3
(1) Heating a high-purity silica quartz glass tube amplified by 1.2 times of the proportion according to a TC4 titanium alloy round bar to 900 ℃ for preheating and heat preservation;
(2) polishing the surface of a TC4 titanium alloy round bar to be flat, removing oxide skin and oil stain by using an acid washing and alkali washing method, and drying at low temperature for later use;
(3) pouring the pure aluminum liquid at 900 ℃ into the high-purity silica quartz glass tube in the step (1), standing and preserving heat;
(4) immediately immersing the TC4 titanium alloy round bar in the step (2) into the aluminum melt of the high-purity silica quartz glass tube in the step (3), and standing at 900 ℃ for thermal diffusion reaction;
(5) controlling the hot dip coating time of the step (4) to be 1 hour, and ensuring that the aluminum liquid reacts with the titanium in the TC4 matrix to generate TiAl3The intermediate phase layer reacts with silicon dioxide to generate silicon atoms which are diffused to the matrix in the aluminum liquid, and ensures that aluminum silicon forms an aluminum silicon gradient coating on the surface of the titanium alloy;
(6) and (3) after hot dipping for 1 hour, rapidly drawing out the TC4 titanium alloy round bar in the step (5), throwing away excessive liquid phase on the surface, and performing water quenching to obtain the titanium alloy in-situ authigenic aluminum-silicon gradient hot-dip coating of the claim 1-3.
(7) The microstructure is shown in figure 5, and the TC4 titanium alloy surface sequentially forms compact solid solution silicon atom Ti (Al, Si)3A mesophase layer,τ 2Phase CLOf (Al, Si) phase layers, silicon concentration gradientsLA layer of- (Al, Si) phase.
Claims (9)
1. The gradient hot-dip coating of in-situ authigenic aluminum-silicon of a titanium alloy is characterized in that: ti (Al, Si) with compact solid solution silicon atoms is formed on the surface of the titanium alloy in sequence3A mesophase layer,τ 2:Ti(Al,Si)2Phase CLOf (Al, Si) phase layers, silicon concentration gradientsLA layer of (Al, Si) phase, whereinLThe- (Al, Si) phase is a solid phase formed after liquid-phase quenching in hot dip plating.
2. The titanium alloy in-situ autogenous aluminum silicon gradient hot dip coating of claim 1, wherein: ti (Al, Si)3The intermediate phase layer is tightly combined with the matrix, and is compact and crack-free;τ 2:Ti(Al,Si)2phase CLThe (Al, Si) phase layer being dependent on Ti (Al, Si)3Intermediate phase layer, bulk formτ 2:Ti(Al,Si)2Phase is dispersed and distributed inLIn the (Al, Si) phase; of the outermost layerLThe silicon concentration of the- (Al, Si) phase layer gradually increases from the inside toward the outside.
3. An in-situ autogenous al-si gradient hot dip coating of titanium alloy according to any of claims 1-2, characterized in that: the weight of the coating is not more than 5mg/cm in 120 hours and under the atmospheric oxidation environment at 900 DEG C2。
4. A method for preparing the titanium alloy in-situ self-generated aluminum-silicon gradient hot dip coating according to any one of claims 1 to 3, which is characterized by comprising the following steps: the method comprises the following steps:
(1) heating a high-purity silica quartz glass vessel which is enlarged by 1.2-1.3 times according to the shape of a titanium alloy workpiece to 800-900 ℃ for preheating and heat preservation;
(2) polishing the surface of a titanium alloy workpiece to be flat, removing oxide skin and oil stain by using an acid washing and alkali washing method, and drying at low temperature for later use;
(3) pouring the pure aluminum liquid at 800 ℃ into the high-purity silica quartz glass ware in the step (1), standing and preserving heat;
(4) immediately immersing the titanium alloy workpiece in the step (2) into the aluminum melt of the high-purity silica quartz glass ware in the step (3), and standing at the temperature of 800-900 ℃ for thermal diffusion reaction;
(5) controlling the hot dip coating time of the step (4) within the range of 0.2-2 hours, and ensuring that the aluminum liquid reacts with the titanium in the matrix to generate TiAl3The intermediate phase layer reacts with silicon dioxide to generate silicon atoms which are diffused to the matrix in the aluminum liquid, and ensures that aluminum silicon forms an aluminum silicon gradient coating on the surface of the titanium alloy;
(6) and (3) after hot dipping for a certain time, quickly drawing out the titanium alloy workpiece in the step (5), throwing away excessive liquid phase on the surface, and performing water quenching to obtain the in-situ self-generated aluminum-silicon gradient hot-dip coating of the titanium alloy.
5. The method for preparing the titanium alloy in-situ self-generated aluminum-silicon gradient hot dip coating according to claim 4, characterized by comprising the following steps: the step (1) comprises the following steps: the high-purity silicon dioxide quartz glass ware with the consistent workpiece shape is used as a reaction material for providing a silicon source and also plays a role of a mold, and the in-situ authigenic aluminum-silicon gradient composite material is ensured to be cast and molded at one time; and standing the mixture in the range of 800-900 ℃ for preheating and heat preservation, wherein the specific value of the temperature is set to be consistent with the hot dip plating temperature.
6. The method for preparing the titanium alloy in-situ self-generated aluminum-silicon gradient hot dip coating according to claim 4, characterized by comprising the following steps: the step (3) comprises the following steps: and (2) pouring the 800 ℃ pure aluminum liquid into the high-purity silica quartz glassware in the step (1), standing the high-purity silica quartz glassware at the temperature of between 800 and 900 ℃, and ensuring the reaction temperature of the aluminum liquid and the silica, wherein the specific value of the temperature is set to be consistent with the hot dipping temperature.
7. The method for preparing the titanium alloy in-situ self-generated aluminum-silicon gradient hot dip coating according to claim 4, characterized by comprising the following steps: the step (4) comprises the following steps: immediately immersing the titanium alloy workpiece in the step (2) into the aluminum melt of the high-purity silica quartz glass ware in the step (3) to ensure that the titanium in the substrate reacts with the aluminum to generate TiAl3The intermediate phase layer is formed by diffusing silicon atoms generated by the aluminum-silicon reaction to the substrate to be dissolved into TiAl3Form a secondary solid solution of Ti (Al, Si)3(ii) a After supersaturation, Ti, Al and Si are generated by reactionτ 2:Ti(Al,Si)2Ternary phase; and standing the mixture at the temperature of between 800 and 900 ℃ for heat preservation, so as to ensure the reaction temperature of the aluminum liquid and the silicon dioxide, wherein the specific value of the temperature is set to be consistent with the hot dipping temperature.
8. The method for preparing the titanium alloy in-situ self-generated aluminum-silicon gradient hot dip coating according to claim 4, characterized by comprising the following steps: the step (5) comprises the following steps: and (4) controlling the hot dip coating time in the step (4) to be adjustable within the range of 0.2-2 hours, so as to control the concentration gradient of silicon in the aluminum liquid and the thickness of the titanium, aluminum and silicon reaction compound phase layer.
9. The method for preparing the titanium alloy in-situ self-generated aluminum-silicon gradient hot dip coating according to claim 4, characterized by comprising the following steps: the step (6) comprises the following steps: rapidly drawing out the titanium alloy workpiece in the step (5), throwing away redundant liquid phase on the surface, and performing water quenching to obtain the in-situ authigenic aluminum-silicon gradient hot-dip coating of the titanium alloy; controlled by the withdrawal speed of the workpiece and the force for throwing away the liquid phaseLThickness of the- (Al, Si) phase.
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| CN112941456B (en) * | 2021-03-10 | 2023-07-25 | 湘潭大学 | Lanthanum-modified titanium and titanium alloy in-situ self-generated Ti-Al-Si gradient coating and preparation method thereof |
| CN113088960B (en) * | 2021-03-31 | 2022-09-16 | 辽宁石油化工大学 | Titanium alloy flexible package wear-resistant coating and preparation method thereof |
| CN114686800A (en) * | 2022-04-25 | 2022-07-01 | 湘潭大学 | Method for preparing Ti-Al-Si composite gradient coating on titanium alloy surface by two-step hot-dip aluminizing method |
| CN114959538A (en) * | 2022-06-14 | 2022-08-30 | 常州大学 | Zinc-aluminum in-situ gradient coating on surface of iron alloy and preparation method thereof |
| CN115106532B (en) * | 2022-07-04 | 2023-04-18 | 浙江兰欣复合材料科技有限公司 | Metal base material containing wear-resistant coating and preparation method thereof |
| CN115491625A (en) * | 2022-09-23 | 2022-12-20 | 常州大学 | Titanium and titanium alloy surface preoxidation modified hot-dip Ti-Al-Si coating and preparation method thereof |
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