Properties of the Nonhydrogenous Diamond-like Carbon Thin Film on the 20CrNiMo Surface by the Hollow-cathode Glow Discharge
Nonhydrogenous Diamond-like carbon (DLC) thin film was deposited on the surface of 20CrNiMo alloy by hollow cathode glow discharge technique. The high-purity graphite was selected as the cathode and Ar as the working gas. It is aimed to reduce the friction coefficient of the 20CrNiMo and to improve the property of the wear-resistance. The structure of the DLC thin film was analyzed by Laser Raman spectroscope. The surface morphology was observed through Atomic Force Microscope (AFM). The adhesion between the DLC thin film and the substrate was investigated with the scribe testing. The morphology of the scratch was observed by the Scanning Electron Microscope (SEM). The friction and wear behavior of the DLC thin film under dry sliding against GCr15 steel was evaluated on a ball-on-disc test rig. The results showed that it was feasible to prepare a DLC thin film of 0.6μm thickness by this experimental process. The surface roughness Ra was about 7~8nm. The DLC thin film has a good adhesion of critical load 52N. It has been found that the DLC thin film has excellent friction and wear-resistant behaviors. The friction coefficient of the 20CrNiMo substrate was about 0.50 under dry sliding against the steel, while the DLC thin film experienced much abated friction coefficient to 0.15 under the same testing condition.
DLC thin film glow discharge hollow-cathode wear behavior
CHEN Fei CHEN Jia-qing CHEN Qiang
Department of materials science and engineering,Beijing Institute of petrochemical technology,Beijin Labroray of Plasma Physical and Material, Beijing Institute of Graphic and Communication,Beijing 102
国际会议
The Fourth Asian Conference on Heat Treatment and Surface Engineering(第四届亚洲热处理及表面工程大会)
北京
英文
510-514
2009-10-27（万方平台首次上网日期，不代表论文的发表时间）