CN113463086A - Method for preparing wear-resistant coating on titanium alloy surface by laser melt injection - Google Patents
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- 238000002347 injection Methods 0.000 title claims abstract description 87
- 239000007924 injection Substances 0.000 title claims abstract description 87
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 46
- 239000011248 coating agent Substances 0.000 title claims abstract description 33
- 238000000576 coating method Methods 0.000 title claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 100
- 239000000919 ceramic Substances 0.000 claims abstract description 31
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 239000000155 melt Substances 0.000 claims abstract description 20
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 16
- 239000000956 alloy Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000011159 matrix material Substances 0.000 claims abstract description 13
- 238000004321 preservation Methods 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims abstract description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000010936 titanium Substances 0.000 claims abstract description 10
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 10
- 229910052786 argon Inorganic materials 0.000 claims abstract description 9
- 229920000742 Cotton Polymers 0.000 claims abstract description 6
- 238000009413 insulation Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims description 30
- 238000002844 melting Methods 0.000 claims description 14
- 230000008018 melting Effects 0.000 claims description 14
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 239000010410 layer Substances 0.000 description 41
- 239000002131 composite material Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 238000005303 weighing Methods 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 4
- 238000004372 laser cladding Methods 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- 239000012300 argon atmosphere Substances 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 229910033181 TiB2 Inorganic materials 0.000 description 2
- 239000011208 reinforced composite material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 description 1
- 229910000883 Ti6Al4V Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a method for preparing a wear-resistant coating on the surface of a titanium alloy by laser melt injection, which is characterized by comprising the following steps: 1) cleaning and preheating the surface of a titanium alloy substrate, and then placing the titanium alloy substrate in an argon protection system to be subjected to laser melt injection treatment; 2) respectively loading raw materials of titanium-based alloy powder and ceramic powder required by laser melt injection into a coaxial powder feeding tank and a paraxial powder feeding tank of equipment; 3) carrying out laser melt injection on the surface of the titanium alloy base material by adopting a coaxial powder feeding mode and a paraxial powder feeding mode, and carrying out heat preservation treatment on the titanium alloy base material in the laser melt injection process; 4) after the melt injection is finished, the titanium alloy matrix with the melt injection layer is placed into heat-preservation heat-insulation cotton to be slowly cooled to room temperature, and the preparation of the wear-resistant coating on the surface of the titanium alloy is finished. Compared with the prior art, the method can enlarge the area of a metal molten pool and realize the preparation of the wear-resistant coating with large thickness.
Description
Technical Field
The invention relates to the technical field of wear-resistant coating preparation, in particular to a method for preparing a wear-resistant coating on the surface of a titanium alloy by laser melt injection.
Background
The titanium alloy has the advantages of high specific strength, small density, good corrosion resistance and the like, and is widely applied to structural components in the fields of aerospace, weapon equipment and the like. However, the low surface hardness, poor wear resistance, etc. of titanium alloys limit their use in special environments with severe wear and friction. At present, the main processes for preparing the wear-resistant material layer on the titanium alloy substrate include vapor deposition, ion implantation, spraying, laser cladding and the like. As a laser melting and pouring technology which is the same as the laser melting and pouring technology, in the technical process, the metal matrix is melted, the ceramic particles are not melted basically, the reinforced particles enter a molten pool in a solid state, and the particles are frozen in the molten pool under the condition of rapid cooling of liquid metal to form a particle reinforced composite material layer. Compared with the traditional laser cladding technology, the laser cladding technology has unique advantages in the aspects of controlling cracking and particle burning loss, and is an ideal method for manufacturing the particle reinforced composite coating.
At present, the laser melting and injection technology for the surface of the titanium alloy mainly feeds ceramic powder separately. For example, Liudejian et Al adopts laser melting injection technique to prepare monocrystal particle reinforced WCp/Ti-6Al-4V gradient composite material layer (Liudejian, Li group, Li Fuquan, Chenbin, monocrystal particle reinforced WCpMicro fracture behavior of a/Ti-6 Al-4V gradient composite material layer, rare metal materials and engineering, 2010, 39 (8): 1431-1434).
However, for the laser melt-injection coating technology for the surface of the titanium alloy, on one hand, the laser melt-injection technology has higher difficulty due to the limited area of a molten pool formed after the surface of the metal matrix is melted; on the other hand, the laser melt-injection process for directly melting the titanium alloy base material can only realize the preparation of a single-layer melt-injection layer, and cannot realize the preparation of a large-thickness wear-resistant coating by a multilayer accumulation method.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a method for preparing a wear-resistant coating on the surface of a titanium alloy by laser melting and injection, which can enlarge the area of a metal melting pool, aiming at the current situation of the prior art.
The invention aims to solve the second technical problem of providing a method for preparing a wear-resistant coating on the surface of a titanium alloy by laser melt injection, which can realize the preparation of the wear-resistant coating with large thickness.
The technical solution adopted by the present invention to solve the first and second technical problems is: a method for preparing a wear-resistant coating on the surface of a titanium alloy by laser melt injection is characterized by comprising the following steps:
1) cleaning and preheating the surface of a titanium alloy substrate, and then placing the titanium alloy substrate in an argon protection system to be subjected to laser melt injection treatment;
2) respectively loading raw materials of titanium-based alloy powder and ceramic powder required by laser melt injection into a coaxial powder feeding tank and a paraxial powder feeding tank of equipment;
3) carrying out laser melt injection on the surface of the titanium alloy base material by adopting a coaxial powder feeding mode and a paraxial powder feeding mode, and carrying out heat preservation treatment on the titanium alloy base material in the laser melt injection process;
4) after the melt injection is finished, the titanium alloy matrix with the melt injection layer is placed into heat-preservation heat-insulation cotton to be slowly cooled to room temperature, and the preparation of the wear-resistant coating on the surface of the titanium alloy is finished.
Preferably, the specific steps of the cleaning in the step 1) are as follows: and (3) placing the titanium alloy substrate in an acetone solution for ultrasonic deoiling cleaning treatment, wherein the cleaning time is 10-15 min.
Preferably, the preheating temperature of the preheating treatment in the step 1) is 300-350 ℃.
Preferably, the oxygen content of the argon shield system in step 1) is less than 100 ppm.
Preferably, the titanium-based alloy powder in the step 2) is at least one of TA0 powder, TA15 powder, TC4 powder and TC11 powder.
Preferably, the particle size of the titanium-based alloy powder in the step 2) is 75-125 μm.
Preferably, the ceramic powder in step 2) is TiC powder or TiB powder2At least one of powder and WC powder.
Preferably, the particle size of the ceramic powder in the step 2) is 53-104 μm.
Preferably, the laser melting power of the laser melting injection in the step 3) is 3.0-4.0 kW, the scanning speed of the laser is 0.3-0.8 m/min, the spot diameter of the laser is 3.0-5.0 mm, the coaxial powder feeding speed is 40-80 g/min, the paraxial powder feeding speed is 20-60 g/min, the paraxial inclination angle is 20-40 degrees, and the ceramic particle injection position is a trailing region of the molten pool of 1.2-2.0 mm. By optimizing the laser power, the laser scanning rate, the ceramic particle injection position and the powder feeding rate, the ceramic particles are prevented from being oxidized and decomposed under the action of laser, and the ceramic particles are successfully and effectively injected into a molten pool, and most of injected powder components are not changed in the process, so that the generation of a large number of brittle phases is avoided, and the problem that a laser cladding layer on the surface of the traditional titanium alloy is easy to crack is well solved.
Preferably, the heat preservation temperature of the titanium alloy matrix in the laser melt injection process in the step 3) is 300-400 ℃.
Preferably, the final thickness of the laser melt-injection wear-resistant coating in the step 3) is controlled to be 1.5-6.0 mm according to different stacking layers.
Compared with the prior art, the invention has the advantages that: the method comprises the steps of respectively conveying titanium-based alloy powder and ceramic powder to the surface of a titanium alloy substrate in a coaxial powder conveying mode and a paraxial powder conveying mode, wherein the titanium-based metal powder is conveyed to a molten pool in a laser coaxial powder conveying mode, the titanium-based alloy powder serves as a basic phase and can be melted into liquid together with part of titanium alloy on the surface of the titanium alloy substrate to form the molten pool, meanwhile, the ceramic powder is injected into the molten pool to be trailing in a paraxial powder conveying mode to avoid decomposition of the ceramic powder under the action of laser, the ceramic powder serves as a reinforcing phase, reinforcing particles can be injected into a trailing area of the molten pool in a solid state, and a wear-resistant molten injection layer (namely a particle reinforced composite material layer) is formed after the molten pool is cooled. On one hand, because the newly-fed metal powder can be melted to form a molten pool, the area of the metal molten pool is enlarged, and the difficulty of the laser melting injection technology is reduced; on the other hand, the newly fed metal powder can provide continuous raw materials for forming a new molten pool, so that the preparation of the wear-resistant coating with large thickness can be realized in a multilayer accumulation mode.
Drawings
FIG. 1 is a schematic process diagram of a laser melt-injection process of a wear-resistant coating on a titanium alloy surface according to an embodiment of the invention;
FIG. 2 is an SEM topography of an anti-wear casting layer of the TC4/TiC composite material prepared in example 1 of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example 1:
a: carrying out ultrasonic deoiling cleaning treatment on a titanium alloy substrate in an acetone solution for 10min, then preheating the titanium alloy substrate to 300 ℃ in an oven to obtain the treated surface of the titanium alloy substrate to be strengthened, and placing the substrate in an argon protection system to be subjected to laser melt injection treatment, wherein the oxygen content of the argon protection system is less than 100 ppm;
b: weighing 500g of TC4 alloy powder with the particle size of 75-125 mu m, and placing the powder into a coaxial powder feeding tank of equipment; weighing 250g of TiC ceramic powder with the particle size of 53-104 mu m, and placing the powder into a paraxial powder feeding tank of equipment;
c: as shown in fig. 1, laser melting injection is carried out on the surface of the titanium alloy base material in an argon atmosphere by adopting a coaxial and paraxial powder feeding mode, the laser melting injection power is 3.0kW, the scanning speed of the laser is 0.3m/min, and the spot diameter of the laser is 3.0 mm; TC4 alloy powder is sent to the surface of titanium alloy through a coaxial powder feeding nozzle, a molten pool is formed under the action of laser, and the coaxial powder feeding speed is 40 g/min; meanwhile, TiC ceramic powder is conveyed to a trailing region of a molten pool through a side shaft powder conveying nozzle, the side shaft powder conveying speed is 20g/min, the side shaft inclination angle is 20 degrees, the injection position of ceramic particles is a trailing region of the molten pool of 1.2mm, the heat preservation temperature of the titanium alloy matrix in the laser melt injection process is 300-400 ℃, and a wear-resistant layer with a certain thickness is obtained only through single-layer laser melt injection;
d: after the melt injection is finished, the titanium alloy matrix with the melt injection layer is placed into heat insulation cotton to be slowly cooled to room temperature, so that a TC4/TiC composite material wear-resistant layer is obtained, and the preparation of the titanium alloy surface wear-resistant coating is finished.
The cross-sectional scanning electron microscope morphology of the wear-resistant melt-injection layer of the TC4/TiC composite material obtained in example 1 is shown in fig. 2, in which the black region is TiC ceramic particles, the gray region is a TC4 alloy base phase, the melt-injection layer has a high TiC ceramic phase content, and has no obvious defects such as cracks and pores in the cross-section, and the TiC ceramic particles are distributed in the melt-injection layer more uniformly.
The thickness of the laser melt-cast layer obtained in example 1 was 1.5mm as measured according to GB/T6462; the Rockwell hardness value of the laser melt-cast layer obtained in example 1 was 55.5HRC as measured according to GB/T230.1; the wear resistance of the melt injection layer at room temperature is represented by a ball disc type friction wear tester, and the used dual is Si3N4Ball, the wear rate of the melt-injected layer was measured to be 2.3X 10-6mm3The hardness and the wear resistance of the melt injection layer are obviously higher than those of the titanium alloy base material.
Example 2:
a: carrying out ultrasonic deoiling cleaning treatment on a titanium alloy substrate in an acetone solution for 15min, then preheating the titanium alloy substrate to 350 ℃ in an oven to obtain the treated surface of the titanium alloy substrate to be strengthened, and placing the substrate in an argon protection system with oxygen content less than 100ppm to be subjected to laser melt injection treatment;
b: weighing 500g of TA15 alloy powder with the particle size of 75-125 mu m, and placing the powder into a coaxial powder feeding tank of equipment; weighing 400g of WC ceramic powder with the particle size of 53-104 μm, and placing the WC ceramic powder into a paraxial powder feeding tank of equipment;
c: carrying out laser melt injection on the surface of the titanium alloy base material in an argon atmosphere by adopting a coaxial and paraxial powder feeding mode, wherein the laser melt injection power is 4.0kW, the scanning speed of the laser is 0.8m/min, and the spot diameter of the laser is 5.0 mm; TA15 alloy powder is sent to the surface of the titanium alloy through a coaxial powder feeding nozzle, a molten pool is formed under the action of laser, and the coaxial powder feeding speed is 80 g/min; simultaneously, delivering WC ceramic powder to a tailing area of a molten pool through a paraxial powder delivery nozzle, wherein the paraxial powder delivery rate is 60g/min, the paraxial inclination angle is 40 degrees, the injection position of the ceramic particles is the tailing area of the molten pool of 2.0mm, the heat preservation temperature of the titanium alloy matrix in the laser melt injection process is 300-400 ℃, repeating the laser melt injection process, and obtaining a wear-resistant layer with a certain thickness through the accumulation of three laser melt injection layers;
d: after the melt injection is finished, the titanium alloy matrix with the melt injection layer is placed into heat-preservation heat-insulation cotton to be slowly cooled to room temperature, so that the TA15/WC composite material wear-resistant layer is obtained, and the preparation of the titanium alloy surface wear-resistant coating is finished.
The thickness of the laser melt-cast layer obtained in example 2 was 6.0mm as measured according to GB/T6462; the Rockwell hardness value of the melt-cast layer obtained in example 2 was 57.3HRC as measured according to GB/T230.1; the wear resistance of the melt injection layer at room temperature is represented by a ball disc type friction wear tester, and the used dual is Si3N4Ball, the wear rate of the melt-injected layer was measured to be 1.1X 10-6mm3The hardness and the wear resistance of the melt injection layer are obviously higher than those of the titanium alloy base material.
Example 3:
a: carrying out ultrasonic deoiling cleaning treatment on a titanium alloy substrate in an acetone solution for 12min, then preheating the titanium alloy substrate to 320 ℃ in an oven to obtain the treated surface of the titanium alloy substrate to be strengthened, and placing the substrate in an argon protection system with oxygen content less than 100ppm to be subjected to laser melt injection treatment;
b: weighing 500g of TC11 alloy powder with the particle size of 75-125 mu m, and placing the powder into a coaxial powder feeding tank of equipment; weighing TiB2400g of ceramic powder with the particle size of 53-104 mu m is placed in a paraxial powder feeding tank of equipment;
c: carrying out laser melt injection on the surface of the titanium alloy base material in an argon atmosphere by adopting a coaxial and paraxial powder feeding mode, wherein the laser melt injection power is 3.5kW, the scanning speed of the laser is 0.5m/min, and the spot diameter of the laser is 4.0 mm; TC11 alloy powder is sent to the surface of titanium alloy through a coaxial powder feeding nozzle, a molten pool is formed under the action of laser, and the coaxial powder feeding speed is 60 g/min; meanwhile, TiB2 ceramic powder is sent to a tailing area of a molten pool through a paraxial powder sending nozzle, the paraxial powder sending speed is 30g/min, the paraxial inclination angle is 30 degrees, the injection position of ceramic particles is a tailing area of the molten pool of 1.5mm, the heat preservation temperature of the titanium alloy matrix in the laser melt injection process is 300-400 ℃, the laser melt injection process is repeated, and a wear-resistant layer with a certain thickness is obtained through the accumulation of two layers of laser melt injection layers;
d: after the melt injection is finished, the titanium alloy matrix with the melt injection layer is placed into heat-preservation heat-insulation cotton to be slowly cooled to room temperature, and TC11/TiB is obtained2And (4) a composite material wear-resistant layer to finish the preparation of the titanium alloy surface wear-resistant coating.
The thickness of the laser melt-cast layer obtained in example 3 was measured to be 4.0mm in accordance with GB/T6462; the Rockwell hardness value of the melt-cast layer obtained in example 3 was 56.0HRC measured according to GB/T230.1; the room temperature wear resistance of the melt injection layer is represented by a ball disc type friction wear tester, and the used dual is Si3N4Ball, the wear rate of the molten layer was measured to be 3.3X 10-6mm3The hardness and the wear resistance of the melt injection layer are obviously higher than those of the titanium alloy base material.
Claims (10)
1. A method for preparing a wear-resistant coating on the surface of a titanium alloy by laser melt injection is characterized by comprising the following steps:
1) cleaning and preheating the surface of a titanium alloy substrate, and then placing the titanium alloy substrate in an argon protection system to be subjected to laser melt injection treatment;
2) respectively loading raw materials of titanium-based alloy powder and ceramic powder required by laser melt injection into a coaxial powder feeding tank and a paraxial powder feeding tank of equipment;
3) carrying out laser melt injection on the surface of the titanium alloy base material by adopting a coaxial powder feeding mode and a paraxial powder feeding mode, and carrying out heat preservation treatment on the titanium alloy base material in the laser melt injection process;
4) after the melt injection is finished, the titanium alloy matrix with the melt injection layer is placed into heat-preservation heat-insulation cotton to be slowly cooled to room temperature, and the preparation of the wear-resistant coating on the surface of the titanium alloy is finished.
2. The method for preparing the wear-resistant coating on the surface of the titanium alloy by laser melt injection according to claim 1, wherein the method comprises the following steps: the specific steps of the cleaning in the step 1) are as follows: and (3) placing the titanium alloy substrate in an acetone solution for ultrasonic deoiling cleaning treatment, wherein the cleaning time is 10-15 min.
3. The method for preparing the wear-resistant coating on the surface of the titanium alloy by laser melt injection according to claim 1, wherein the method comprises the following steps: the preheating temperature of the preheating treatment in the step 1) is 300-350 ℃.
4. The method for preparing the wear-resistant coating on the surface of the titanium alloy by laser melt injection according to claim 1, wherein the method comprises the following steps: the oxygen content of the argon protection system in the step 1) is less than 100 ppm.
5. The method for preparing the wear-resistant coating on the surface of the titanium alloy by laser melt injection according to claim 1, wherein the method comprises the following steps: the titanium-based alloy powder in the step 2) is at least one of TA0 powder, TA15 powder, TC4 powder and TC11 powder.
6. The method for preparing the wear-resistant coating on the surface of the titanium alloy by laser melt injection according to claim 1, wherein the method comprises the following steps: the particle size of the titanium-based alloy powder in the step 2) is 75-125 mu m.
7. The method for preparing the wear-resistant coating on the surface of the titanium alloy by laser melt injection according to claim 1, wherein the method comprises the following steps: the ceramic powder in the step 2) is TiC powder and TiB powder2At least one of powder and WC powder, wherein the particle size of the ceramic powder is 53-104 μm.
8. The method for preparing the wear-resistant coating on the surface of the titanium alloy by laser melt injection according to claim 1, wherein the method comprises the following steps: the laser melting power of the laser melting in the step 3) is 3.0-4.0 kW, the scanning speed of the laser is 0.3-0.8 m/min, the spot diameter of the laser is 3.0-5.0 mm, the coaxial powder feeding speed is 40-80 g/min, the paraxial powder feeding speed is 20-60 g/min, the paraxial inclination angle is 20-40 degrees, and the ceramic particle injection position is a trailing area of a molten pool of 1.2-2.0 mm.
9. The method for preparing the wear-resistant coating on the surface of the titanium alloy by laser melt injection according to claim 1, wherein the method comprises the following steps: the heat preservation temperature of the titanium alloy matrix in the laser melt injection process in the step 3) is 300-400 ℃.
10. The method for preparing a wear-resistant coating by laser melt-injection on the surface of a titanium alloy according to any one of claims 1 to 9, wherein: and 3) controlling the final thickness of the laser melt-injection wear-resistant coating to be 1.5-6.0 mm according to different stacking layers.
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| CN116987922A (en) * | 2023-09-22 | 2023-11-03 | 烟台核电智能技术研究院有限公司 | Preparation method of composite ceramic particle reinforced titanium alloy wear-resistant coating |
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| CN102465294A (en) * | 2010-11-17 | 2012-05-23 | 杭州中科新松光电有限公司 | Method for carrying out laser-cladding on high-hardness nickel-based alloy material in large area |
| CN105002492A (en) * | 2015-07-27 | 2015-10-28 | 西安交通大学 | Method for preparing ceramic particle enhanced metal matrix composite coating in laser cladding mode through asynchronous powder feeding method |
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|---|---|---|---|---|
| CN102465294A (en) * | 2010-11-17 | 2012-05-23 | 杭州中科新松光电有限公司 | Method for carrying out laser-cladding on high-hardness nickel-based alloy material in large area |
| CN105002492A (en) * | 2015-07-27 | 2015-10-28 | 西安交通大学 | Method for preparing ceramic particle enhanced metal matrix composite coating in laser cladding mode through asynchronous powder feeding method |
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| 钟正根 等, 华中科技大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116987922A (en) * | 2023-09-22 | 2023-11-03 | 烟台核电智能技术研究院有限公司 | Preparation method of composite ceramic particle reinforced titanium alloy wear-resistant coating |
| CN116987922B (en) * | 2023-09-22 | 2024-03-29 | 烟台核电智能技术研究院有限公司 | Preparation method of composite ceramic particle reinforced titanium alloy wear-resistant coating |
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Application publication date: 20211001 |