文献类型：期刊文献

英文题名：Experimental study on the effect of surface texture on tribological properties of nanodiamond films under water lubrication

作者：Yan, Ying[1];Lei, Xuelin[1];He, Yun[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Room 503, Shanghai, Peoples R China

年份：2022

卷号：236

期号：5

起止页码：995

外文期刊名：PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY

收录：;EI(收录号：20213110698841);WOS:【SCI-EXPANDED(收录号:WOS:000679745500001)】；

基金：The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by the National Natural Science Foundation of China (grant number 51705155).

语种：英文

外文关键词：Nanocrystalline diamond films; tribological properties; laser texture; hydrodynamic fluid

摘要：The effect of nanoscale surface texture on the frictional and wear performances of nanocrystalline diamond films under water-lubricating conditions were comparatively investigated using a reciprocating ball-on-flat tribometer. Although the untreated nanocrystalline diamond film shows a stable frictional state with an average friction coefficient of 0.26, the subsequent textured films show a beneficial effect on rapidly reducing the friction coefficient, which decreased to a stable value of 0.1. Furthermore, compared with the nanocrystalline diamond coating, the textured films showed a large decreasing rate of the corresponding ball wear rate from 4.16 x 10(-3) to 1.15 x 10(-3) mm(3)/N/m. This is due to the fact that the hydrodynamic fluid film composed of water and debris can provide a good lubrication environment, so the entire friction process has reached the state of fluid lubrication. Meanwhile, the surface texture can greatly improve the hydrophilicity of the diamond films, and as the texture density increases, the water contact angle decreases from 94.75 degrees of the nanocrystalline diamond film to 78.5 degrees of the textured films. The proper textured diamond film (NCD90) exhibits superior tribological properties among all tested diamond films, such as short run-in period, low coefficient of friction, and wear rate.