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

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

Making Alumina Microcomponents from Al Powder

  • Kim, J.S. (School of Engineering Mechanical and Manufacturing Engineering, University of Birmingham) ;
  • Jiang, K. (School of Engineering Mechanical and Manufacturing Engineering, University of Birmingham) ;
  • Falticeanu, L. (Metallurgy and Materials School of Engineering, University of Birmingham) ;
  • Daviesd, G.J. (School of Engineering Mechanical and Manufacturing Engineering, University of Birmingham) ;
  • Chang, I. (Metallurgy and Materials School of Engineering, University of Birmingham)
  • 발행 : 2006.09.24
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Alumina microcomponents have distinguishing advantages over Si counterpart. However, the shrinkage of alumina, as high as 20%, makes it difficult to produce precision components meeting a high tolerance. A new fabrication process presented to greatly reduce the shrinkage by producing alumina microcomponents from ultrafine Al powder. The process consists of forming Al powder components through sintering and turning the Al powder component into alumina. In this way, the shrinkage occurring in sintering the Al powder component will be compensated by the expansion appearing when the Al powder component turns into alumina. The process has proven successful.

키워드