한국분말야금학회:학술대회논문집 (Proceedings of the Korean Powder Metallurgy Institute Conference)

한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
권호 표지

Effect of Particle Size in Feedstock Properties in Micro Powder Injection Molding

  • Baek, Eung-Ryul (Materials Science and Engineering Dept., Yeungnam University) ;
  • Supriadi, Sugeng (Materials Science and Engineering Dept., Yeungnam University) ;
  • Choi, Chul-Jin (Materials Technology Dept., Korean Institute of Machinery and Materials) ;
  • Lee, Byong-Taek (Advanced Materials Engineering Dept., Kongju National University) ;
  • Lee, Jae-Wook (Materials Technology Dept., Korean Institute of Machinery and Materials)
  • 발행 : 2006.09.24
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초록

Small powder size is very useful in achieving detailed structures. STS 316 nanopowders with an average diameter of 100 nm and $5{\mu}m$ were utilized to produce feedstock. The mixing behavior of the feedstock indicated that the nanoparticle feedstock produced the highest mixing torque at various powder loading compared to the micropowder feedstock. The nanoparticles feedstocks showed that elastic properties are dominant in flow behavior and high viscosity. Conversely the micropowders feedstocks, viscous properties are dominant in flow behavior and less viscosity, nanopowders feedstock perform lower flow activation energy than feedstock with bigger particles.

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