Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Microstructure and Sintering Behavior of Injection Molded Fe Sintered Body Using Rapid Thermal Heating Process

급속승온공정을 이용한 사출성헝된 Fe 소결체의 미세조직 및 소결거동

  • Kim Ki-Hyun (Division of Advanced Materials Engineering, Kongiu National University) ;
  • Han Jae-Kil (Division of Advanced Materials Engineering, Kongiu National University) ;
  • Yu Ji-Hun (Korea Institute of Machinery and Material) ;
  • Choi Chul-Jin (Korea Institute of Machinery and Material) ;
  • Lee Byong-Taek (Division of Advanced Materials Engineering, Kongiu National University)
  • 김기현 (공주대학교 나노소재응용공학부) ;
  • 한재길 (공주대학교 나노소재응용공학부) ;
  • 유지훈 (한국기계연구원 나노분말재료) ;
  • 최철진 (한국기계연구원 나노분말재료) ;
  • 이병택 (공주대학교 나노소재응용공학부)
  • Published : 2004.12.01
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Abstract

Using the nano Fe powders having 50 nm in diameter, Fe compact bodies were fabricated by injec-tion molding process. The relationship between microstructure and material properties depending on the volume ratio of powder/binder and sintering temperature were characterized by SEM, TEM techniques. In the compact body with the volume percentage ratio of 45(Fe powder) : 55(binder), which was sintered at $700^{\circ}C,$ the relative density was about $97{\%},$ and the values of volume shrinkage and hardness were about $66.3{\%}$ and 242.0 Hv, respec-tively. Using the composition of 50(Fe powder) : 50(binder) and sintered at $700^{\circ}C,$ the values of relative density, volume shrinkage and hardness of Fe sintered bodies were $73.3{\%},\;47.6{\%}$ and 152.8 Hv, respectively. They showed brittle fracture mode due to the porous and fine microstructure.

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