한국표면공학회지 (Journal of the Korean institute of surface engineering)

  • 제53권6호
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  • Pages.360-368
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  • 2020
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  • 1225-8024(pISSN)
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  • 2288-8403(eISSN)
한국표면공학회 (The Korean Institute of Surface Engineering)
권호 표지
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다층막 ta-C 코팅 적용을 통한 절삭공구의 내마모성 향상

Enhanced Wear Resistance of Cutting Tools Using Multilayer ta-C Coating

  • 김도현 (한국재료연구원, 표면재료연구본부) ;
  • 강용진 (한국재료연구원, 표면재료연구본부) ;
  • 장영준 (한국재료연구원, 표면재료연구본부) ;
  • 김종국 (한국재료연구원, 표면재료연구본부)
  • Kim, Do Hyun (Surface technology division, Korea Institute of Materials Science) ;
  • Kang, Yong-Jin (Surface technology division, Korea Institute of Materials Science) ;
  • Jang, Young-Jun (Surface technology division, Korea Institute of Materials Science) ;
  • Kim, Jongkuk (Surface technology division, Korea Institute of Materials Science)
  • 투고 : 2020.12.15
  • 심사 : 2020.12.28
  • 발행 : 2020.12.31
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초록

Wear resistance of cutting tools is one of the most important requirements in terms of the durability of cutting tool itself as well as the machining accuracy of the workpiece. Generally, tungsten carbide ball end mills have been processed with hard coatings for high durability and wear resistance such as diamond coating and tetrahedral amorphous carbon(ta-C) coating. In this study, we developed multilayer ta-C coatings whose wear resistance is comparable to that of diamond coating. First, we prepared single layer ta-C coatings according to the substrate bias voltage and Ar gas flow, and the surface microstructure, raman characteristics, hardness and wear characteristics were evaluated. Then, considering the hardness and wear resistance of the single layer ta-C, we fabricated multilayer coatings consisting of hard and soft layers. As a result, it was confirmed that the wear resistance of the multilayer ta-C coating with hardness of 51 GPa, and elastic recovery rate of 85% improved to 97% compared to that of the diamond coated ball end mill.

키워드

참고문헌

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