Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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The Effect of Addition of Ti and Co Elements on Microstructural control and Characteristics of Vacuum-casted Cu-25 wt%Cr Electrical Contact Material

Ti과 Co 첨가가 진공주조법으로 제조된 Cu-25 wt%Cr 난가공성 중고압용 전기접점 소재의 미세구조 제어 및 물성에 미치는 영향

  • Hye Sung Kim (Department of Nanomechatronics engineering, Pusan National University)
  • 김혜성 (부산대학교 나노메카트로닉스공학과)
  • Received : 2024.07.11
  • Published : 2024.07.30
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Abstract

In this study, the effect of addition of Ti and Co elements on microstructural evolution and characteristics of vacuum-casted Cu-25%Cr electrical contact material was investigated. The coarse and insoluble Cr phases with an average size of 300 ㎛ in commercial Cu-25%Cr alloy were reduced to tens of micrometers in vacuum casted Cu-25%Cr-X(X=Ti, Co) alloy, which can be interpreted as result controlling coarsening and the work-frame structure of the insoluble Cr phase by the formation of intermetallic compounds such as Cr2Ti or Cr0.5Co1.5Ti around the Cr phase As a result, the electrical properties such as weight loss and fusion resistance against the repeated arc generation of the electrical contact material as well as the mechanical properties were greatly improved.

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Acknowledgement

위의 과제는 부산대학교 기본연구지원사업 (2년)에 의하여 연구되었습니다.

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