作者：YE Hang1SUN Gaoyang2ZHANG Haibo3LI Yanjing1,3GAO Changhe3LI Yong1YE Fangbao2

作者单位：1. School of Materials Science and Engineering, University of Science and Technology Beijing2. High Temperature Ceramic Institute, Zhengzhou University3. Tongda Refractory Technologies Co., Ltd.

刊名：China’s Refractories

ISSN：1004-4493

出版年：2019-03-15

卷：28

期：1

起页：22-27

止页：

分类号：TQ175.712.1

语种：英文

关键词：

内容简介

Sintered mullite is prepared by kyanite powder with Al2O3 content of 45% and 50%（Yinshan, Nanyang City, China）,and the industrial alumina is added to control the chemical composition. The different series of sintered mullite according to the Al2O3 content（45%-70%） are designed. The raw materials are mixed and compacted, and then sintered at different temperatures. Physical properties, phase composition, microstructure and refractoriness under load of the synthesized samples are characterized by physical property test, XRD, SEM and RUL test, in order to confirm the quality of sintering and the relationship between temperature and mullitization reaction. The results show that the sintered mullite from low-medium grade kyanite has well developed mullite crystals and a continuous staggered network structure is formed, which has a significant contribution to increasing the high temperature performance of mullite.