Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Characteristic Studies on Electro-Discharge-Sintering of Ti5Si3 Powder Synthesized by Mechanical Alloying

기계적 합금화에 의해 제조된 Ti5Si3 분말의 전기방전소결 특성 연구

  • Cheon, Yeon-wuk (Department of Advanced Materials Engineering, Sejong University) ;
  • Cho, Yu-jung (Department of Advanced Materials Engineering, Sejong University) ;
  • Kang, Tae-ju (Department of Advanced Materials Engineering, Sejong University) ;
  • Kim, Jung-yeul (Department of Semiconductor & Electronics Engineering, Uiduk University) ;
  • Park, Jun-sik (Department of Materials Engineering, Hanbat University) ;
  • Byun, Chang-sup (Department of Materials Engineering, Hanbat University) ;
  • Lee, Sang-ho (Department of Materials Engineering, Hanbat University) ;
  • Lee, Won-hee (Department of Advanced Materials Engineering, Sejong University)
  • 천연욱 (세종대학교 신소재공학과) ;
  • 조유정 (세종대학교 신소재공학과) ;
  • 강태주 (세종대학교 신소재공학과) ;
  • 김정열 (위덕대학교 반도체전자공학과) ;
  • 박준식 (한밭대학교 재료공학과) ;
  • 변창섭 (한밭대학교 재료공학과) ;
  • 이상호 (한밭대학교 재료공학과) ;
  • 이원희 (세종대학교 신소재공학과)
  • Received : 2009.01.15
  • Published : 2009.10.25
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Abstract

The consolidation of mechanical alloyed $Ti_5Si_3$ powder by electro-discharge-sintering has been investigated. A single pulse of 2.5 to 8.0 kJ/0.34 g was applied to each powder mixture using 300 and $450{\mu}F$ capacitors. A bulk-like solid with $Ti_5Si_3$ phase has been successfully fabricated by the discharge with an input energy of more than 2.5 kJ in less than $160{\mu}sec$. Micro-Vickers hardness was found to be higher than 1350, which is significantly higher than that of a conventional high temperature sintered sample. The formation of $Ti_5Si_3$ and consolidation occurred through a fast solid state diffusion reaction.

Keywords

Acknowledgement

Supported by : 한밭대학교

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