Metal-gas eutectic growth during unidirectional solidification

被引：36
|
作者：
Liu, Yuan [1 ]
Li, Yanxiang [1 ]
Wan, Jiang [1 ]
Zhang, Huawei [1 ]
机构：
[1] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2006年 / 37A卷 / 09期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1007/BF02586119
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Metal-gas eutectic growth is a novel method for fabricating porous metals in which the gas pores are rodlike and aligned with the solidification direction. A new model was developed to predict the effects of the gas pressure and the solidification velocity on the porosity, pore diameter, and interpore spacing in metal-gas eutectic unidirectional solidification. The pore size and the interpore spacing are primarily dependent on the total gas pressure, but the porosity is dependent not only on the total gas pressure but also on the ratio of the partial pressures of hydrogen to argon.
引用
收藏
页码：2871 / 2878
页数：8
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