Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7886524 | Ceramics International | 2018 | 7 Pages |
Abstract
Mullite ceramics with hollow whisker structure have been synthesized firstly through ordinary sintering process. The effects of Bi2O3 and processing, on mullitization behavior and morphology development of mullite ceramics, derived from the mechanochemically activated mixture of Al2O3 and SiO2, were investigated in this paper. When the content of Bi2O3 was less than 10â¯mol%, the mullite grains show a short rod-like morphology, without the formation of whisker. As the content of Bi2O3 was increased to more than 10â¯mol%, the formation temperature of mullite was decreased from 1400â¯Â°C to 1100â¯Â°C. After sintering at 1400â¯Â°C, well-developed mullite whiskers with hollow structure were formed. The formation process and growth mechanism of hollow structural whiskers in mullite ceramic doped with high content of Bi2O3 were discussed in detail.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Zhuohao Xiao, Xianglin Li, Shijin Yu, Xinyuan Sun, Xiuying Li, Min Wu, Chuanhu Wang, Tianshu Zhang, Sean Li, Ling Bing Kong,