Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Production of Fe Amorphous Powders by Gas-atomization Process and Subsequent Spark Plasma Sintering of Fe Amorphous-ductile Cu Composite Powders Produced by Ball-milling Process (I) - I. Gas Atomization and Production of Composite Powders -

가스분무법에 의한 Fe계 비정질 분말의 제조와 볼밀링공정에 의한 연질 Cu 분말과의 복합화 및 SPS 거동 (I) - I. 가스분무 및 복합화 -

  • Ryu, Ho-Jin (School of Materials Science & Engineering, University of Ulsan) ;
  • Lim, Jae-Hyun (School of Materials Science & Engineering, University of Ulsan) ;
  • Kim, Ji-Soon (School of Materials Science & Engineering, University of Ulsan) ;
  • Kim, Jin-Chun (School of Materials Science & Engineering, University of Ulsan) ;
  • Kim, H.J. (Eco Functional Materials Team, Korea Institute of Industrial Technology)
  • 류호진 (울산대학교 첨단소재공학부) ;
  • 임재현 (울산대학교 첨단소재공학부) ;
  • 김지순 (울산대학교 첨단소재공학부) ;
  • 김진천 (울산대학교 첨단소재공학부) ;
  • 김휘준 (한국생산기술연구원 에코공정연구부)
  • Published : 2009.10.28
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Abstract

Fe based (Fe$_{68.2}$C$_{5.9}$Si$_{3.5}$B$_{6.7}$P$_{9.6}$Cr$_{2.1}$Mo$_{2.0}$Al$_{2.0}$) amorphous powder, which is a composition of iron blast cast slag, were produced by a gas atomization process, and sequently mixed with ductile Cu powder by a mechanical ball milling process. The experiment results show that the as-prepared Fe amorphous powders less than 90 $\mu$m in size has a fully amorphous phase and its weight fraction was about 73.7%. The as-atomized amorphous Fe powders had a complete spherical shape with very clean surface. Differential scanning calorimetric results of the as-atomized Fe powders less than 90 $\mu$m showed that the glass transition, T$_g$, onset crystallization, T$_x$, and super-cooled liquid range $\Delta$T=T$_x$-T$_g$ were 512, 548 and 36$^{\circ}C$, respectively. Fe amorphous powders were mixed and deformed well with 10 wt.% Cu by using AGO-2 high energy ball mill under 500 rpm.

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