Interpenetrating Al2O3-TiAl3 alloys produced by reactive infiltration

被引：54

作者：

Wagner, F ^{[1
]}

Garcia, DE ^{[1
]}

Krupp, A ^{[1
]}

Claussen, N ^{[1
]}

机构：

[1] Tech Univ Hamburg Harburg, Adv Ceram Grp, D-21071 Hamburg, Germany

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1999年 / 19卷 / 13-14期

关键词：

composites; microstructure-final; mechanical properties; TiAl3; Al2O3; reactive infiltration;

D O I：

10.1016/S0955-2219(99)00133-8

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Dense alumina-TiAl3 composites with interpenetrating networks have been fabricated by reactive gas-pressure infiltration and squeeze casting of Al into sintered porous preforms containing 30 vol% TiO2 and 70 vol% Al2O3. Strength of up to 543 +/- 21 MPa with corresponding fracture toughness of 8.6 +/- 0.4 MPa root m and hardness of HV10=565 +/- 27 have been obtained. The present paper discusses processing parameters such as particle size of oxide precursor and preform porosity which control microstructural development and mechanical properties of the composites. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：2449 / 2453

页数：5

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