期刊首页 优先出版 当期阅读 过刊浏览 作者中心 关于期刊 English

2007年 第2卷 第1期

摘要

关键词

相关研究

回顶部

《机械工程前沿（英文）》 >> 2007年 第2卷 第1期 doi: 10.1007/s11465-007-0021-y

Effect of extrusion temperature on the physical properties of high-silicon aluminum alloy

School of Material Science and Engineering, Central South University, Changsha 410083, China;

发布日期： 2007-03-05
HTML23 PDF 2 收藏 0

下一篇 上一篇

摘要

Light-weight high-silicon aluminum alloys are used for electronic packaging in the aviation and space-flight industry. Al-30Si and Al-40Si are fabricated with air-atomization and vacuum-canning hot-extrusion process. The density, thermal conductivity, hermeticity and thermal expansion coefficients of the material are measured, and the relationship between extrusion temperature and properties is obtained. Experimental results show that the density of high-silicon aluminum alloys prepared with this method is as high as 99.64% of the theory density, and increases with elevating extrusion temperature. At the same time, thermal conductivity varies between 104-140 W/(m " K); with the extrusion temperature, thermal expansion coefficient also increases but within 13?10 (at 100?C) and hermeticity of the material is high to 10 order of magnitude.

相关研究