Ni-based coating with abrasion-resistance corrosion-resistance nanometer structure and preparation method
A nanostructure and coating technology, which is applied in coatings, metal material coating technology, anti-corrosion coatings, etc., can solve the problems of low-cost nanostructure alloy coatings with little research, high comprehensive performance requirements for wear resistance and corrosion resistance, etc. Limited application and other issues, to achieve the effect of low cost, low porosity, and high particle flight speed
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Embodiment 1
[0016] 1) After the raw material powder is proportioned, spray powder is prepared by vacuum atomization method. The powder making process parameters are: smelting vacuum degree 0.01Pa, melting temperature 1600°C, atomization pressure 4.0Mpa, atomization atmosphere is argon , the components and contents of the spray powder are: C: 1.5%wt, B: 3.0%wt, Si: 2.5%wt, Fe: 4.0%wt, Cr: 12.0%wt, the balance is Ni, the particle size of the spray powder 5~45μm;
[0017] 2) The spray powder prepared in step 1) is sprayed onto the 0Cr13Ni5Mo stainless steel substrate by active combustion high-speed gas spraying technology to obtain a wear-resistant and corrosion-resistant nanostructure Ni-based coating. The spraying process parameters are: air pressure 0.55MPa, primary combustion Chamber pressure: 0.44MPa, secondary combustion chamber pressure: 0.24MPa, spraying distance: 100mm, powder feeding speed: 6ppm.
Embodiment 2
[0019] 1) After the raw material powder is proportioned, spray powder is prepared by vacuum atomization method. The powder making process parameters are: smelting vacuum degree 0.05Pa, smelting temperature 1700℃, atomization pressure 2.5Mpa, atomization atmosphere is argon , the components and contents of the spray powder are: C: 0.8%wt, B: 3.8%wt, Si: 3.5%wt, Fe: 7.8%wt, Cr: 17.5%wt, the balance is Ni, the particle size of the spray powder 5~45μm;
[0020] 2) The spray powder prepared in step 1) is sprayed on the 0Cr13Ni5Mo stainless steel substrate by active combustion high-speed gas spraying technology to obtain a wear-resistant and corrosion-resistant nanostructure Ni-based coating. The spraying process parameters are: air pressure 0.60MPa, primary combustion Chamber pressure: 0.49MPa, secondary combustion chamber pressure: 0.28MPa, spraying distance: 150mm, powder feeding speed: 4ppm.
Embodiment 3
[0022] 1) After the raw material powder is proportioned, spray powder is prepared by vacuum atomization method. The powder making process parameters are: smelting vacuum degree 0.1Pa, melting temperature 1800°C, atomization pressure 2.0Mpa, atomization atmosphere is argon , the components and contents of the spray powder are: C: 0.5%wt, B: 5.0%wt, Si: 6.0%wt, Fe: 9.0%wt, Cr: 25.0%wt, the balance is Ni, the particle size of the spray powder 5~55μm;
[0023] 2) The spray powder prepared in step 1) is sprayed on the 0Cr13Ni5Mo stainless steel substrate by active combustion high-speed gas spraying technology to obtain a wear-resistant and corrosion-resistant nanostructure Ni-based coating. The spraying process parameters are: air pressure 0.60MPa, primary combustion Chamber pressure: 0.55MPa, secondary combustion chamber pressure: 0.33MPa, spraying distance: 200mm, powder feeding speed: 2ppm.
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