Molecular dynamic simulations on the process of Ag-Al2O3 powder

被引：0

作者：

Yu, Jie ^{[1
]}

Chen, Jingchao ^{[1
]}

Hong, Zhenjun ^{[2
]}

Feng, Jing ^{[1
]}

机构：

[1] Key Laboratory of Advanced Materials in Rare and Precious and Non-ferrous Metals, Kunming University of Science and Technology, Kunming 650093, China

[2] Inner Mongolia Machinery Corporation Process Institute, Baotou 014033, China

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2011年 / 28卷 / 05期

关键词：

Aluminum oxide - Nanotechnology - Diffusion - Reaction kinetics - Alumina - Binary alloys - Molecular oxygen - Silver;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In order to investigate the diffusion and transition mechanism for Ag in Ag-Al supersaturated solid under oxygen atmosphere, the diffusion rate, temperature and process for Ag-Al-O phase transition were calculated by the molecular dynamics simulation. The calculated results show that there are conflict between precipitation of Ag and formation of compact alumina film during oxidation process, Ag precipitates quickly at 600 K in oxygen atmosphere, associated with the formation of the Ag2Al phase in Al-Ag solution. The model and calculation result were proved to be reasonable through experiment, Ag in nano scale could be controlled through the short path diffusion of Ag and formation of compact alumina film under reaction temperature.

引用

页码：150 / 155

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