한국분말재료학회지 (Journal of Powder Materials)

  • 제19권1호
  • /
  • Pages.32-39
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  • 2012
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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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밀링 에너지 변화에 따른 TiC 분말의 미세화 거동에 관한 정량적 연구

Quantitative Study on the Refinement Behaviors of TiC Powders Produced by Mechanical Milling Under Different Impact Energy

  • 홍성모 (공주대학교 신소재공학부) ;
  • 박은광 (한국원자력연구원 원자력재료개발부) ;
  • 김경열 (한국원자력연구원 원자력재료개발부) ;
  • 박진주 (한국원자력연구원 원자력재료개발부) ;
  • 이민구 (한국원자력연구원 원자력재료개발부) ;
  • 이창규 (한국원자력연구원 원자력재료개발부) ;
  • 이진규 (공주대학교 신소재공학부) ;
  • 권영순 (울산대학교 첨단소재공학부)
  • Hong, Sung-Mo (Division of Advanced Materials Engineering, Kongju National University) ;
  • Park, Eun-Kwang (Nuclear Materials Development Division, Korea Atomic Energy Research Institute (KAERI)) ;
  • Kim, Kyeong-Yeol (Nuclear Materials Development Division, Korea Atomic Energy Research Institute (KAERI)) ;
  • Park, Jin-Ju (Nuclear Materials Development Division, Korea Atomic Energy Research Institute (KAERI)) ;
  • Lee, Min-Ku (Nuclear Materials Development Division, Korea Atomic Energy Research Institute (KAERI)) ;
  • Rhee, Chang-Kyu (Nuclear Materials Development Division, Korea Atomic Energy Research Institute (KAERI)) ;
  • Lee, Jin-Kyu (Division of Advanced Materials Engineering, Kongju National University) ;
  • Kwon, Young-Soon (School of Materials Science and Engineering, University of Ulsan)
  • 투고 : 2012.01.09
  • 심사 : 2012.02.03
  • 발행 : 2012.02.28
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초록

This study investigated refinement behaviors of TiC powders produced under different impact energy conditions using a mechanical milling process. The initial coarse TiC powders with an average diameter of 9.3 ${\mu}m$ were milled for 5, 20, 60 and 120 mins through the conventional low energy mechanical milling (LEMM, 22G) and specially designed high energy mechanical milling (HEMM, 65G). TiC powders with angular shape became spherical one and their sizes decreased as the milling time increased, irrespective of milling energy. Based upon the FE-SEM and BET results of milled powders, it was found initial coarse TiC powders readily became much finer near 100 nm within 60 min under HEMM, while their sizes were over 200 nm under LEMM, despite the long milling time of up to 120 min. Particularly, ultra-fine TiC powders with an average diameter of 77 nm were fabricated within 60 min in the presence of toluene under HEMM.

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