A novel processing route for whisker shaped mullite-alumina composites from kaolin

被引：0

作者：

Cho, Yong-Ki ^{[1
]}

Kim, Byung-Moon ^{[1
]}

Yoon, Seog-Young ^{[1
]}

Stevens, Ron ^{[2
]}

Park, Hong-Chae ^{[1
]}

机构：

[1] Pusan Natl Univ, Sch Mat Sci & Engn, Pusan 609735, South Korea

[2] Univ Bath, Dept Mech Engn, Bath BA2 7AY, Avon, England

来源：

JOURNAL OF CERAMIC PROCESSING RESEARCH | 2008年 / 9卷 / 06期

关键词：

Whisker shaped mullite/particulate alumina composites; In situ processing; Kaolin; Foaming agent;

D O I：

暂无

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：

Whisker shaped mullite/particulate alumina composites prepared by a two-step in situ processing route have been characterized in terms of their microstructure and mechanical properties. Well-developed mullite whiskers were firstly formed at 1300 degrees C for 15 h and subsequently sintered at higher temperatures (<= 1650 degrees C). A liquid phase was formed by the reaction of SiO2 and Al2O3, aided by the presence of Na2O and P2O5; these additions improved the formation and growth of mullite whiskers. The mechanical properties of the sintered materials appeared to be mainly governed by the grain size of the major phase, the presence of voids, and an intergranular glass.

引用

页码：652 / 656

页数：5