中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 14 No. 4 August 2004 |
nano-Al2O3/Ni composite coating①
（1. School of Materials Science and Engineering, Shanghai Jiaotong University,
Shanghai 200030, China;
2. National Key Laboratory for Remanufacturing,
Academy of Armored Forces Engineering, Beijing 100072, China）
Abstract:Solid contaminants in lubrication system will cause severe wear of sliding components. In order to improve the wear resistance of the material in oil containing solid contaminants, the brush plated nano- Al2O3/Ni composite coating was prepared and the influence of the sand content and sand size on the tribological property of the coating in oil containing solid contaminants was tested with ball-on-disc tester. The results show that the wear volume increases with increasing the
sand content and sand size, and the wear resistance of the composite coating is 20% higher than that of the high-speed plain nickel coating. The main wear mechanisms of the coatings are abrasive wear and adhesive wear. And due to the nano-particle strengthening effect, the wear resistance of the composite coating is improved.
Key words: composite coating; nano-particles; wear; solid contaminant
