Formation of MgO and Mg-Zn intermetallics in an Mg-based composite by in situ reactions

被引：20

作者：

Deng, CJ ^{[1
]}

Wong, ML ^{[1
]}

Ho, MW ^{[1
]}

Yu, P ^{[1
]}

Ng, DHL ^{[1
]}

机构：

[1] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2005年 / 36卷 / 05期

关键词：

metal-matrix-composites (MMC); microstructure; sintering; reaction model;

D O I：

10.1016/j.compositesa.2004.09.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The fabrication and microstructural characterization of an Mg-based metal matrix composite, which is reinforced by MgO ceramic and Mg-Zn intermetallics is described. The fabrication process involved the mixing and pressing of Mg and ZnO powders, and was followed by sintering of the green compact at a temperature below the melting point of Mg. The order of appearance of the in situ formed reinforcements, namely MgO and Zn-Mg eutectic, in the Mg matrix during sintering was investigated. Based on the Gibbs's free energy associated with each reaction, a model for the formation of this composite is postulated. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：551 / 557

页数：7

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