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Influence of Sintering Pressure on the SPS of Powdered Copper
Author(s): 
Pages: 921-924
Year: Issue:  10
Journal: TRANSACTIONS OF BEIJING INSTITUTE OF TECHNOLOGY

Keyword:  放电等离子烧结铜粉烧结压力相对密度;
Abstract: 研究了平均粉末粒度为1μm的铜粉在不同压力条件下的放电等离子烧结过程,系统分析了压坯的密度和微观组织与烧结升温阶段的初始压力和保压压力之间的关系. 结果表明:烧结温度为800℃,初始压力为1MPa,保压压力为50MPa的烧结工艺,可以制备相对密度大于98%,平均晶粒度小于10μm的烧结铜. 同时发现,采用SPS工艺制备的烧结铜沿厚度方向存在不同于传统双向压制的密度分布,SPS烧结铜的表面密度低于心部密度.
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