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采用松装烧结法制备多孔铜,研究了材料密度、孔隙率、拉伸强度与烧结温度的关系。结果表明,在烧结时间均为5 h时,随着铜多孔材料的烧结温度由830℃升高至860、890℃,材料密度逐渐增大、孔隙率逐渐降低,而拉伸强度随之提高;一定尺寸的物质可以顺利通过铜多孔材料,这主要是由于该材料的孔隙具有连通性。

Porous copper was prepared by loose powder sintering method. The relation between material density,porosity,tensile strength and sintering temperature was studied. Porous copper was synthesized by sintering for 5 h at 830,860 and 890 ℃, respectively. The results show that the higher the sintering temperature,the higher the density and tensile strength,and the lower the porosity. Furthermore,the pores of obtained porous copper material are linked with each other in three dimensional space,and materials with a certain size can pass through them,due to the connectivity of the material.

参考文献

[1] 方玉诚,王浩,周勇,况春江.粉末冶金多孔材料新型制备与应用技术的探讨[J].稀有金属,2005(05):791-796.
[2] 汤慧萍,张正德.金属多孔材料发展现状[J].稀有金属材料与工程,1997(01):1-6.
[3] 徐卫东.烧结-脱溶工艺制备多孔铜的压缩行为[J].机械工程材料,2007(06):9-11.
[4] 翁振福.烧结锡青铜过滤元件防氧化处理前后性能测试对比[J].粉末冶金工业,1994(05):188-191.
[5] 周照耀,吴峥强,邵明,李元元.烧结金属多孔材料孔隙的研究[J].粉末冶金工业,2005(04):6-10.
[6] GB 6889-1986.烧结镍铜合金过滤元件[S].北京:中国标准出版社,1986.
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