放電焼結におけるCu-Al<SUB>2</SUB>O<SUB>3</SUB>複合材料の緻密化速度

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タイトル別名
  • Densification Rate of Cu-Al<SUB>2</SUB>O<SUB>3</SUB> Composite in the Spark Sintering Process
  • 放電焼結におけるCu-Al2O3複合材料の緻密化速度
  • ホウデン ショウケツ ニ オケル Cu Al2O3 フクゴウ ザイリョウ ノ チミツカ ソクド

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抄録

The densification rate of Cu-Al2O3 composite was measured and analyzed to investigate the influences of the alumina particles addition on the densification process in the spark sintering process.<BR>The consolidation of Cu-10∼50 vol%Al2O3 composites proceeds due to the plastic flow of copper powder compact matrix. The effect of the alumina particles on the spark sintering of composites was analyzed based on the following equation, including the increase of relative density of composite compact, D−D0, that of copper (Dc-c−D0) and alumina (Dal-al−D0) and the particle contact probability of “copper-copper” ((1−Vp)2), “copper-alumina”(2Vp(1−Vp)) and “alumina-alumina” (Vp2).<BR>(This article is not displayable. Please see full text pdf.) <BR>\oindentwhere η is a ratio of the relative density increase at “copper-alumina” particle contacts to that at “copper-copper” particles contacts, and η≤1. Moreover, D, Dc-c and Dal-al are the relative density of composite compact, copper and alumina at a given temperature and pressure, respectively, and Vp is the volume fraction of added alumina particles.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 67 (10), 528-537, 2003

    公益社団法人 日本金属学会

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