Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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In-Situ Measurement of Densification Behavior of Nano Cu Powders during Sintering

In-Situ 측정에 의한 나노 Cu 분말의 소결 공정 시 치밀화 거동

  • 윤승채 (충남대학교 대학원 나노소재공학과) ;
  • 복천희 (충남대학교 대학원 나노소재공학과) ;
  • 곽은정 (충남대학교 대학원 나노소재공학과) ;
  • 이창규 (한국원자력연구원) ;
  • 김형섭 (충남대학교 나노소재공학과)
  • Published : 2007.06.01
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Abstract

Manufacturing bulk nanostructured materials with least grain growth from initial powders is challenging because of the bottle neck of bottom-up methods using the conventional powder metallurgy via compaction and sintering. In the study, densification behavior of nano Cu powders during pressureless sintering was investigated using an in-situ optical dilatometer technique. The initial heating and steady temperature stages during the sintering of nano Cu powder compacts were observed. At the initial heating stage, the powder compact has many porosities and full densification needs high temperature and/or high pressure sintering. In the experimental analysis, changes in geometry and density were measured and discussed for optimal consolidation and densification by the in-situ optical dilatometer.

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References

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