SU Wanfu， LIU Yin， SONG Hanxuan， HU Zhiqiang， LU Zhengliang
（School of Materials Science and Engineering， Anhui University of Science and Technology， Huainan 232001， Anhui， China）
Abstract：Using coal gangue and KAl (SO4) 2·12H2O as raw materials, nanocrystalline mullite whiskers were successfully synthesized by molten salt method. The phase composition, microstructure of mullite were studied by means of XRD, FESEM, LPSA. The results show that the needle-like mullite whiskers with diameter size of 2040 nm can be obtained when the weight ratio of coal gangue to KAl (SO4) 2·12H2O is 1∶0.8 1 ∶1.3, and the molten salt temperature is 7501 000% ℃. The nano-mullite whiskers with different micro-morphologies can be obtained by controlling the synthesis temperature by the molten salt method.
Keywords：coal gangue; aluminum potassium sulfate dodecahydrate; molten salt method; mullite whisker
文章编号：1008-5548（2018）04-0028-04
DOI：10.13732/j.issn.1008-5548.2018.04.006
收稿日期：2018-02-01， 修回日期：2018-03-21，在线出版时间：2018-07-04。
基金项目：安徽省科技攻关项目，编号：1604a0802122；安徽省科技重大专项，编号：17030901091。
第一作者简介：苏万福（1995—），男，研究方向为陶瓷材料、固废处理。E-mail: 1468457404@qq.com。
通信作者简介：刘银（1975—），男，教授，博士，研究方向为高技术陶瓷材料、功能材料、纳米材料等。E-mail: yinliu@aust.edu.cn。
