Shrinkage kinetics of nanoscaled W-Cu alloy during hotpressing sintering

被引：0

作者：

Xu, Jinlong ^{[1
]}

Zhang, Liying ^{[1
]}

Cui, Feng'e ^{[1
]}

Tan, Yuxin ^{[1
]}

Wu, Chengyi ^{[1
]}

机构：

[1] Mat. Sci. and Eng. Sch., Univ. of Sci. and Technol. Beijing, Beijing 100083, China

来源：

Beijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing | 2004年 / 26卷 / 02期

关键词：

Hot pressing - Mechanical properties - Nanostructured materials - Scanning electron microscopy - Sintering - Test facilities;

D O I：

暂无

中图分类号：

TG146.1+1 [铜]; TF811 [铜];

学科分类号：

摘要：

The effect of pressure, gas atmosphere and W particle size on the shrinkage kinetic curve of nano-scaled W-Cu composite powders during hot pressing were studied. The growing of W grains in W-Cu alloys was analyzed. Some mechanical properties were measured. The results show that, using composite nano-powders of W-Cu, the nano-scaled W-Cu alloy in which W particle size is not more than 0.5μm can be obtained through hot pressing in H2 atmosphere and under a high pressure of 75 MPa at low sintering temperatures of 970-1200°C. The relative density of the ultrafine grained alloy can reach 98.8%. The mechanical properties at 500°C greatly exceed those of the conventional W-Cu alloy.

引用

页码：142 / 147

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