Processing, microstructure and mechanical strength of reaction-bonded Al2O3 ceramics

被引：9

作者：

Bertrand, S

Michalet, T

Giraud, A

Parlier, M

Bataille, A

Duclos, R

Crampon, J

机构：

[1] Off Natl Etud & Rech Aerosp, DMSC, F-92320 Chatillon, France

[2] Univ Sci & Tech Lille Flandres Artois, CNRS, ESA 8008, Lab Struct & Proprietes Etat Solide, F-59655 Villeneuve Dascq, France

来源：

CERAMICS INTERNATIONAL | 2003年 / 29卷 / 07期

关键词：

milling; sintering; strength; Al2O3;

D O I：

10.1016/S0272-8842(02)00225-0

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：

Reaction-bonded Al2O3 (RBAO) ceramics were fabricated from attrition-milled Al/Al2O3 powder mixtures. Two different Al precursor powders and several contents of Al were used. The raw materials and the RBAO powder mixtures were studied in terms of grain size, oxidation behaviour (TGA/DTA), morphology and microstructure. The influence of the important parameters controlling the RBAO process is first discussed. Secondly, the microstructure of RBAO bodies uniaxially pressed and heat-treated in air, up to 1100 and 1250 degreesC, is reported and their mechanical strength is evaluated and compared to conventional Al2O3 ceramics. (C) 2003 Elsevier Ltd and Techna S.r.l. All rights reserved.

引用

页码：735 / 744

页数：10

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