한국분말재료학회지 (Journal of Powder Materials)

  • 제14권2호
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  • Pages.132-139
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  • 2007
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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WC 첨가 방법에 따른 Ti(CN)-Co/Ni 계 서멧트의 미세조직 및 특성변화

Microstructural Evolution and Properties in Ti(CN)-Co/Ni Cermet Depending on the Starting Material for Incorporation of WC

  • 정태주 (안동대학교 신소재공학부) ;
  • 안선용 (한국야금(주) 생산기술연구소) ;
  • 안승수 (한국야금(주) 생산기술연구소) ;
  • 신명수 (한국야금(주) 생산기술연구소) ;
  • 김학규 (한국야금(주) 생산기술연구소) ;
  • 김경배 (한국야금(주) 생산기술연구소) ;
  • 오경식 (안동대학교 신소재공학부) ;
  • 이혁재 (안동대학교 신소재공학부)
  • Chung, Tai-Joo (School of Materials Science and Engineering, Andong National University) ;
  • Ahn, Sun-Yong (Division of Research and Development, Korloy Inc.) ;
  • Ahn, Seung-Su (Division of Research and Development, Korloy Inc.) ;
  • Shin, Myung-Soo (Division of Research and Development, Korloy Inc.) ;
  • Kim, Hak-Kyu (Division of Research and Development, Korloy Inc.) ;
  • Kim, Kyung-Bae (Division of Research and Development, Korloy Inc.) ;
  • Oh, Kyung-Sik (School of Materials Science and Engineering, Andong National University) ;
  • Lee, Hyuk-Jae (School of Materials Science and Engineering, Andong National University)
  • 발행 : 2007.04.28
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초록

In the Ti(CN)-Co/Ni cermet, WC is an effective additive for increasing sinterability and mechanical properties such as toughness and hardness. In this work, WC, (WTi)C and (WTi)(CN) were used as the source of WC and their effects were investigated in the respect of microstructural evolution and mechanical properties. Regardless of the kinds of WC sources, the hard phase with dark core and bright rim structure was observed in the Ti(CN)-Co/Ni cermet under the incorporation of relatively small amount of WC. However, hard phases with bright core began to appear and their frequency increased with the increase of all kinds of WC source addition. The ratio of bright core to dark one in the (TiW)(CN)-Co/Ni cermet was greatest under the incorporation of (WTi)C compared at the same equivalent amount of WC. The mechanical properties were improved with the addition of WC irrespective of the kinds of sources, but the addition of (WTi)(CN) was less effective for the increase of fracture toughness.

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