The structural stability in nano-sized crystals of metals

被引：0
|
作者：
Meng, QP [1 ]
Rong, YH [1 ]
Hsu, TY [1 ]
Xu, ZY [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200030, Peoples R China
来源：
SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES | 2002年 / 45卷 / 05期
基金：
中国国家自然科学基金;
关键词：
phase transformation; nano-sized crystal; energy of interface; critical size; excess volume;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The equation of phase equilibria in nano-sized crystal of metals has been established in terms of thermodynamic equilibrium. The thermodynamic parameters are calculated and the critical grain size for the stable high-temperature phase at room temperature is obtained. As an example, the critical grain size of beta-Co at room temperature is determined at 35nm when the excess volume is 10%. The result agrees well with the experiment of Katakimi et al. The factors affecting the stability of beta-Co are also discussed.
引用
收藏
页码：485 / 494
页数：10
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