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논문 기본 정보

자료유형
학술대회자료
저자정보
Eui-Sung Yoon (한국과학기술연구원) R.Arvind Shingh (한국과학기술연구원) Hung-Gu Han (한국과학기술연구원) Hosung Kong (한국과학기술연구원)
저널정보
한국트라이볼로지학회 한국트라이볼로지학회 학술대회 한국윤활학회 2004년도 창립 20주년 기념 자동차 트라이볼로지 국제 심포지움 및 제39회 추계학술대회
발행연도
2004.11
수록면
90 - 98 (9page)

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Nano/micro-scale studies on friction properties were conducted on Si (100) and three self-assembled monolayers (SAMs) (PFOTC, DMDM, DPDM) coated on Si-wafer by chemical vapor deposition technique. Experiments were conducted at ambient temperature (24±1℃) and humidity (45±5%). Nano-friction was evaluated using Atomic Force Microscopy (AFM) in the range of 0-40nN normal loads. In both Si-wafer and SAMs, friction increased linearly as a function of applied normal load. Results showed that friction was affected by the inherent adhesion in Si-wafer, and in the case of SAMs the physical/chemical structures had a major influence. Coefficient of friction of these test samples was also evaluated at the micro-scale using a micro-tribotester. It was observed that SAMs had superior frictional property due to their low interfacial energies. In order to study of the effect of contact area on friction coefficient at the micro-scale, friction was measured for Si-wafer and DPDM against Soda Lime balls (Duke Scientific Corporation) of different radii (0.25 ㎜, 0.5 ㎜ and 1 ㎜) at different applied normal loads (1500, 3000 and 4800μN). Results showed that Si-wafer had higher friction coefficient than DPDM. Furthermore, unlike that in the case of DPDM, friction was severely influenced by wear in the case of Si-wafer. SEM evidences showed that solid-solid adhesion to be the wear mechanism in Si-wafer.

목차

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

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