| ZHAO Tao,WANG You-qiang,LI Meng-jie,ZHU Yu-ling,HE Yan.Research Progress on Improvement of Tribological Properties of Materials by Surface Micro-texture and Thermal Diffusion Technology[J],52(8):89-103 |
| Research Progress on Improvement of Tribological Properties of Materials by Surface Micro-texture and Thermal Diffusion Technology |
| Received:April 19, 2022 Revised:July 27, 2022 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2023.08.005 |
| KeyWord:surface micro-texture thermal diffusion technology synergistic effect tribological property friction-reducing mechanism |
| Author | Institution |
| ZHAO Tao |
School of Mechanical and Automotive Engineering, Shandong Qingdao , China |
| WANG You-qiang |
School of Mechanical and Automotive Engineering, Shandong Qingdao , China;Key Lab of Industrial Fluid Energy Conservation and Pollution Control of the Ministry of Education, Qingdao University of Technology, Shandong Qingdao , China |
| LI Meng-jie |
School of Mechanical and Automotive Engineering, Shandong Qingdao , China |
| ZHU Yu-ling |
School of Mechanical and Automotive Engineering, Shandong Qingdao , China |
| HE Yan |
School of Mechanical and Automotive Engineering, Shandong Qingdao , China |
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| Abstract: |
| Surface micro-texture has attracted extensive attention from researchers because of its ability to effectively improve the tribological properties between friction pairs. At present, it has been applied in different engineering fields. However, there are some problems in the application of surface micro-texture, such as large stress concentration at texture edge, long-term wear failure, and inability to play an effective role in complex environment such as easy corrosion, low speed and heavy load. In order to improve the tribological properties of surface micro-texture, researchers begin to combine thermal diffusion technology with surface micro-texture, so as to further improve the tribological properties of friction pairs while making up for the defects of single technology and giving full play to the advantages of both technologies. Firstly, the common processing methods of surface micro-texture were summarized. Among them, laser surface micro-texture was the most widely used, which could quickly shape the surface micro-texture of complex shape. The friction-reducing mechanism of surface micro-texture under different lubrication conditions was systematically summarized and the effect of wettability on tribological properties was pointed out. Starting with different surface thermal diffusion technologies, the emphasis was put on the research status of the synergy between salt bath nitriding technology, plasma nitriding technology, thermal oxidation technology, chemical vapor deposition technology and surface micro-texture. According to the performance parameters such as friction coefficient, wear amount, surface hardness and bonding strength, the feasibility of different composite technologies and their effect on the tribological properties of the matrix were analyzed and summarized. In the composite processing, surface micro-texture can improve the depth and adhesion of the diffused layer, so the technology of surface micro-texture firstly and then thermal diffusion is usually adopted. However, relevant studies have shown that thermal diffusion before surface micro-texture can also significantly improve the tribological properties of materials, so the sequence of the combination of the two technologies needs to be further deepened. Compared with single surface treatment technology, composite technology can further improve the surface hardness of materials and prolong the service life of texture. Generally speaking, the wear resistance of composite surface is significantly better than that of single-treated surface and untreated surface, but the friction coefficient is greatly affected by working conditions. In addition, different texture parameters (shape, area ratio, size, etc.) and thermal diffusion parameters (temperature and time) directly affect the tribological properties of composite surface. There are appropriate texture parameters and thermal diffusion parameters to optimize the bonding strength, infiltration layer quality and tribological properties of the composite surface. Finally, the research and development of texture and thermal diffusion technology is summarized, and the effect of different texture parameters and thermal diffusion parameters on the tribological properties of matrix needs to be further explored, and the synergistic effect mechanism of the two is not clear. The high performance of surface treated by composite technology provides the possibility of application in more complex working conditions. It is necessary to carry out basic research on the application of composite technology in extreme working conditions to promote the development of composite technology in the field of tribology. |
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