Fabrication of net shape reaction bonded oxide ceramics

被引：13

作者：

Gesswein, H ^{[1
]}

Binder, JR ^{[1
]}

Ritzhaupt-Kleissl, HJ ^{[1
]}

Hausselt, J ^{[1
]}

机构：

[1] Forschungszentrum Karlsruhe, Inst Mat Forsch 3, D-76021 Karlsruhe, Germany

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2006年 / 26卷 / 4-5期

关键词：

reaction bonding; composites; mechanical properties; mullite; ZrO2;

D O I：

10.1016/j.jeurceramsoc.2005.06.008

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：

Zero-shrinkage mullite-zirconia ceramics with Y2O3 and MgO as sintering additives and siloxanes as low loss binders were fabricated by direct oxidation of ZrAl3/ZrSi2 and ZrAl3/Zr2Si/3Y-ZrO2 powder compacts. Depending on the starting composition the sintered ceramics contain either ZrO2 and mullite or ZrO2, alumina and mullite as crystalline phases. The reaction bonding process was studied by thermogravimetry, dilatometry and quantitative XRD-phase analysis. Due to their dense microstructure reaction-bonded 55/45 (vol.%) ZrO2/mullite composites sintered at 1450 degrees C exhibit biaxial flexure strengths up to 630 MPa. Reaction bonded ZrO2/Al2O3/mullite composites (30/25/45 vol.%) show biaxial flexure strengths of 635 MPa. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：697 / 702

页数：6

共 11 条

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