콘텐츠 본문
논문 해외 국제전문학술지(SCI급) FRICTION FORCE MICROSCOPY STUDY OF ANNEALED DIAMOND-LIKE CARBON FILM
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2012-10
- 저자명 HEO, J (HEO, JINHEE),CHOI, WS (CHOI, WON SEOK),HONG, B (HONG, BYUNGYOU),JOUNG, YH (JOUNG, YEUN-HO)공동(참여)
- 학술지명 MATERIALS RESEARCH BULLETIN
- 발행처명 PERGAMON-ELSEVIER SCIENCE LTD
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 4
논문 초록 (Abstract)
In this paper we introduce mechanical and structural characteristics of diamond-like carbon (DLC) films which were prepared on silicon substrates by radio frequency (RF) plasma enhanced chemical vapor deposition (PECVD) method using methane (CH4) and hydrogen (H2) gas. The films were annealed at various temperatures ranging from 300 to 900 °C in steps of 200 °C using rapid thermal processor (RTP) in nitrogen ambient. Tribological properties of the DLC films were investigated by atomic force microscopy (AFM) in friction force microscopy (FFM) mode. The structural properties of the films were obtained by high resolution transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The wettability of the films was obtained using contact angle measurement. XPS analysis showed that the sp3 content is decreased from 75.2% to 24.1% while the sp2 content is increased from 24.8% to 75.9% when the temperature is changed from 300 to 900 °C. The contact angles of DLC films were higher than 70°. The FFM measurement results show that the highest friction coefficient value was achieved at 900 °C annealing temperature.
