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Tribological properties of carbon steel brake discs affected by microstructure and disc temperature 원문보기

  • 저자

    김현승

  • 학위수여기관

    고려대학교 대학원

  • 학위구분

    국내석사

  • 학과

    신소재공학과

  • 지도교수

    장호

  • 발행년도

    2014

  • 총페이지

    53

  • 키워드

    주강 디스크 미세조직 마찰특성 페이드 열전도도;

  • 언어

    eng

  • 원문 URL

    http://www.riss.kr/link?id=T13541952&outLink=K  

  • 초록

    The tribological properties of carbon steel discs was studied using a 1/5 scale dynamometer. Carbon steel discs were tempered on various temperatures (400, 500, 600 and 700 ℃) to make different microstructure respectively. After tempering, microstructure morphology, hardness and thermal diffusivity were investigated. In the low temperature friction tests (IBT 70 ℃), friction coefficient increased and surface temperature also increased during brake procedure. On the other hand, in the high temperature friction tests (IBT 470 ℃), friction coefficient decreased as disc temperature increased on discs which had a low thermal diffusivity. In case of friction levels, microstructure change of disc during friction test caused unstable contact surface which is an important factor for friction levels.


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