期刊论文

Liao Shu-Zhi

英文

中国物理快报：英文版

0256-307X

2011

28

8

080502-1-080502-4

10.1088/0256-307X/28/8/080502

Scientific Research Fund of Hunan Provincial Science and Technology Department

本校为其他机构

The intrinsic thermodynamical factors that dominate the stability of nanocrystallines are investigated through the microcosmic process of grain growth. The results suggest that nanocrystallines grows at a certain temperature and the critical temperature is determined by the vacancy formation energy and diffusion activation energy of the nanocrystallines. Based on the hypothesis, a simple model is proposed to predict the size-dependent critical temperature of grain growth. Within this model, we investigate the thermal stability of nanocrystallin...