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자료유형
학술대회자료
저자정보
Duc-Cuong Pham (한국과학기술연구원) Eui-Sung Yoon (한국과학기술연구원) Ho-Sung Kong (한국과학기술연구원) Hyo-Sok Ahn (서울대학교)
저널정보
한국트라이볼로지학회 한국트라이볼로지학회 학술대회 한국윤활학회 2006년도 제42회 춘계학술대회
발행연도
2006.6
수록면
123 - 128 (6page)

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This study concerns the effects of tribochemical interactions at the interface between Si-DLC (silicon-doped diamond-like carbon) film and steel ball in sliding contact on tribological properties of the film. The Si-DLC film was deposited on DLC/Si substrate using radio frequency plasma-assisted chemical vapor deposition (r.f. PACVD) with different Si concentration. Friction tests against steel ball using a reciprocating type wear tester were performed in ambient environment. X-Ray photoelectron spectroscopy (XPS) and auger electron spectroscopy (AES) were used to study the chemical characteristics and elemental composition of the film and mating balls after tests. As results, a dark-gray transfer film consists of carbon, oxygen and silicon elements were observed on worn surface of steel ball with different thickness. The oxidation of Si-DLC surface and steel ball was also identified at particular regions of contact area. On the contrary, the transfer film could not be found on surface of the ball slid against pure DLC coating. This demonstrates that chemical reactions were occurred at contact area of Si-DLC and steel ball during sliding. While friction test of DLC film versus steel ball exhibited high friction coefficient (~0.06), the Si-DLC in its turn showed very low friction (~0.022) with the presence of tribofilm on mating ball surface. However, Si-DLC film possesses poor wear resistance in comparison with the pure DLC. We suggest that the tribochemical process strongly affected to tribological properties of the Si-DLC film in sliding against steel.

목차

Abstract
1. Introduction
2. Experimental details
3. Results and discussion
4. Conclusions
References

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