动力学
扩散
热的
曲面(拓扑)
表面扩散
材料科学
热力学
数学
化学
物理
几何学
物理化学
经典力学
吸附
作者
Öncü Akyıldız,Tarik Ömer Oğurtani
出处
期刊:Hitite journal of science and engineering
日期:2017-01-01
卷期号:4 (1): 7-16
被引量:4
标识
DOI:10.17350/hjse19030000042
摘要
In polycrystalline materials wherever a grain boundary intersects a free surface and whenever the topographic variation associated with the atomic motion is favored by total free energy dissipation, the material surface grooves. In this review, we focused on the grain boundary grooving by surface diffusion which is an active mechanism at moderate temperatures and for grooves small in size. Starting with a description of the classical thermo-kinetics treatment of the process, we briefly reviewed Mullins’ very first modeling effort with a small slope assumption at the groove root and further considerations regarding finite slopes, different grain geometries, and anisotropic surface free energies. We concluded by giving examples of experimental observations in accord with theoretical calculations.
Keywords: Thermal grooving; Grain boundary groove; Surface diffusion DOI: 10.17350/HJSE19030000042 Full Text: Review Article
科研通智能强力驱动
Strongly Powered by AbleSci AI