Micro/Nanomechanical and Tribological Properties of Thin Diamond-Like Carbon Coatings  

类金刚石薄膜的微/纳米机械和摩擦性能(英文)

作　　者：张泰华 刘东旭 郇勇 杨业敏 王秀兰 

机构地区：[1]LNM, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China [2]Beijing Research Institute of Aerospace Materials & Technology, Beijing 100076, China

出　　处：《Chinese Journal of Aeronautics》2003年第1期47-51,共5页中国航空学报（英文版）

基　　金：National Natural Science Foundation of China (10 2 42 0 0 1;10 172 0 86) ;Chinese Academ y of Sciences (KJCX2 -SW-L2 )

摘　　要：The diamond-like carbon (DLC) films with different thicknesses on 9Crl8bearing steels were prepared using vacuum magnetic-filtering arc plasma deposition. Vickersindentation, nanoin-dentation and nanoscratch tests were used to characterize the DLC films with awide range of applied loads. Mechanical and tribological behaviors of these submicron films wereinvestigated and interpreted. The hardnesses of 9Cr18 and DLC. determined by nanoindentation, areapproximately 8GPa and 60GPa respectively; their elastic moduli are approximately 250GPa and 600GParespectively. The friction coefficients of 9Cr18, DLC, organic coating, determined by nanoscratch,are approximately 0. 35, 0. 20 and 0. 13 respectively. It is demonstrated that nanoindentation andnanoscratch tests can provide more information about the near-surface elastic-plastic deformation,friction and wear properties. The correlation of mechanical properties and scratch resistance of DLCfilms on 9Cr18 steels can provide an assessment for the load-carrying capacity and wear resistance.The diamond-like carbon (DLC) films with different thicknesses on 9Crl8bearing steels were prepared using vacuum magnetic-filtering arc plasma deposition. Vickersindentation, nanoin-dentation and nanoscratch tests were used to characterize the DLC films with awide range of applied loads. Mechanical and tribological behaviors of these submicron films wereinvestigated and interpreted. The hardnesses of 9Cr18 and DLC. determined by nanoindentation, areapproximately 8GPa and 60GPa respectively; their elastic moduli are approximately 250GPa and 600GParespectively. The friction coefficients of 9Cr18, DLC, organic coating, determined by nanoscratch,are approximately 0. 35, 0. 20 and 0. 13 respectively. It is demonstrated that nanoindentation andnanoscratch tests can provide more information about the near-surface elastic-plastic deformation,friction and wear properties. The correlation of mechanical properties and scratch resistance of DLCfilms on 9Cr18 steels can provide an assessment for the load-carrying capacity and wear resistance.

关 键 词：diamond-like carbon MICROHARDNESS NANOINDENTATION NANOSCRATCH solidlubricating 

分 类 号：TB43[一般工业技术]