Effects of Rare-earth Oxides Doping on Microstructures and Properties of Al2O3/TiAl Composites

被引：0

作者：

Wang, Fen ^{[1
]}

Wang, Xiaofeng ^{[1
]}

Zhu, Jianfeng ^{[1
]}

Xiang, Liuyi ^{[1
]}

机构：

[1] Shaanxi Univ Sci & Technol, Minist Educ, Key Lab Auxiliary Chem & Technol Chem Ind, Xian 710021, Peoples R China

来源：

ADVANCED MATERIAL SCIENCE AND TECHNOLOGY, PTS 1 AND 2 | 2011年 / 675-677卷

关键词：

TiAl; rare-earth oxide; microstructure; mechanical property;

D O I：

10.4028/www.scientific.net/MSF.675-677.143

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effects of rare-earth oxides addition (0.38 similar to 1.52 mol% of Sm2O3, Eu2O3 and Er2O3) on the property and microstructure of the hot-pressed (1300 degrees C, 2h, 35 MPa) Al2O3 (12 wt %)/TiAl in-situ composites have been investigated. The results show that the doping of rare-earth oxides has a positive effect on both mechanical properties and densities of Al2O3/TiAl composites. Densities enhanced with increasing of rare-earth oxides. The flexural strength and fracture toughness were higher than other samples when the rare-earth oxide content was 0.38 mol %. The matrix grains and Al2O3 particles were significantly refined, and Al2O3 particles evenly distributed in the matrix.

引用

页码：143 / 146

页数：4

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