A microporous stainless steel substrate with physical vapor deposition coating and its preparation process
A technology of physical vapor deposition and preparation process, which is applied in the field of microporous stainless steel substrate of physical vapor deposition coating and its preparation process, which can solve the difficulty of control, difficulty in meeting the requirements of the film layer and stainless steel substrate, and the increase rate of internal stress of the coating Increase and other issues
Active Publication Date: 2021-01-15
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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Problems solved by technology
However, the effects of the above existing ways of improving the bonding force between the film layer and the stainless steel substrate are relatively limited, and the control is difficult
In the actual industrial field, many working conditions require a thicker coating, and when the thickness of the coating is larger, especially after reaching tens of microns, the internal stress of the coating increases faster, and the bond between the coating and the stainless steel substrate The force problem is prominent, and the existing measures to improve the bonding force between the film layer and the stainless steel substrate are difficult to meet the requirements
Method used
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[0025] see figure 1, a microporous stainless steel substrate of a physical vapor deposition coating, the microporous stainless steel substrate includes a bottom layer 1 with a dense structure and a surface layer 2 with a microporous structure, and the porosity of the bottom layer 1 with a dense structure is no more than 1%, The thickness of the surface layer 2 is 50-200 microns, the area of the micropores 3 of the surface layer 2 accounts for 5%-20% of the surface of the surface layer 2, and the number of the micropores 3 is at least 4 Polygonal, the micropores 3 are evenly distributed on the surface layer 2, the micropores 3 of the surface layer 2 run through the entire surface layer 2 from top to bottom, and the edges of each side of the inner edge of the polygonal micropores 3 are irregular curves.
[0026] The distance from any vertex to any side of the polygon is in the range of 50-150 microns.
[0027] The microporous stainless steel substrate is prepared by a 3D pri...
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Abstract
A microporous stainless steel substrate with a physical vapor deposition coating, the microporous stainless steel substrate includes a bottom layer with a dense structure and a surface layer with a microporous structure, the micropores are evenly distributed on the surface layer, and the micropores of the surface layer Holes run through the entire surface layer from top to bottom. The preparation process of the microporous stainless steel substrate includes that the surface layer is firstly treated by a sandblasting process, then by a polishing process, and finally by a surface ultrasonic impact processing. The microporous stainless steel substrate of the physical vapor deposition coating in the present invention can provide good coating / substrate bonding force for the coating in the physical vapor deposition process, and can well meet the needs of many industries including the food industry and the medical industry. Long-term requirements for functional coated stainless steel in various industrial fields.
Description
technical field [0001] The invention relates to a stainless steel substrate for coating deposition and a preparation process thereof, in particular to a microporous stainless steel substrate for a physical vapor deposition coating and a preparation process thereof. Background technique [0002] Due to its unique corrosion resistance and safety to the human body, the stainless steel substrate is widely used in many industrial fields including the food industry and the medical industry. However, with the development of society and industrial technology, the use of surface coating technology to improve the wear resistance, corrosion resistance and antibacterial performance of stainless steel surface is one of the current research hotspots in the industrial field. [0003] The bonding force between the coating and the substrate is a key indicator that affects the long-term effect of the coating, and the temperature problem in the coating preparation process is also the key to th...
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IPC IPC(8): B22F3/11B22F1/00B22F3/24
CPCB22F3/11B22F3/24B22F1/052
Inventor 田斌安思佳岳文
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY