Improvement in sintering characteristics and electrical properties of Cr60Cu40 alloy targets by hot isostatic pressing treatment

被引：14
作者：
Chang, S. -H. [1 ]
Chen, S. -H. [1 ]
Huang, K. -T. [2 ]
Liang, C. [1 ]
机构：
[1] Natl Taipei Univ Technol, Dept Mat & Mineral Resources Engn, Taipei 10608, Taiwan
[2] Natl Siluo Agr Ind High Sch, Dept Automech, Yunlin 64841, Yunlin County, Taiwan
来源：
POWDER METALLURGY | 2013年 / 56卷 / 01期
关键词：
Cr60Cu40 alloy targets; Vacuum sintering; Hipping; TRS; Resistivity; HIP;
D O I：
10.1179/1743290112Y.0000000038
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Owing to ingredient segregation, non-uniform microstructure and porosity defects in Cr-Cu alloys are frequently produced by melting process. Even subsequent heat treatment and hot working would not be able to completely resolve the problem. Therefore, this study investigated Cr60Cu40 alloy targets produced via vacuum sintering followed by hipping. Experimental results showed that the relative density of the sintered Cr60Cu40 alloy targets reached 99.69%, the apparent porosity decreased to 0.31% and transverse rupture strength increased to 553 MPa after hipping treatment at 1050 degrees C at 175 MPa for 4 h. In addition, the closed pores were almost completely eliminated after the hipping treatment. The resistivity decreased to 643 x 10(-8) Omega cm, and the International Annealed Copper Standard value was enhanced to 26.81% after optimal hipping treatment. This study shows that hipping treatment can effectively eliminate internal pores of sintered Cr60Cu40 alloy targets and also improve their electrical properties.
引用
收藏
页码：77 / 82
页数：6
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