Mullite Fibers Prepared by Sol-Gel Method Using Aluminum Chloride Aluminum Isopropoxide and Tetraethylorthosilicate

作者：Zhang, Yabin^*; Ding, Yaping; Li, Yong; Gao, Jiqiang; Yang, Jianfeng; Guo, Litong

来源：Materials and Manufacturing Processes, 2011, 26(4): 649-653.

DOI：10.1080/10426910903124787

• AlCl3 center dot 6H2O
• Drying
• Fiber
• Mullite
• Process
• Reaction
• Sintering
• Sol-gel

Mullite fibers with good flexibility were prepared from an aqueous water solution of aluminum chloride (AC), aluminum isopropoxide (AIP), tetraethylorthosilicate (TEOS) by the sol-gel process. Aluminosilicate spinnable sol (pH=2) with the stoichiometric mullite composition (Al:Si=3:1, AIP/AC=2:1) was prepared. The removal of organic and chlorine was completed at 800 degrees C. The complete transformation to mullite was observed at 1200 degrees C by X-ray diffraction (XRD). The lateral and circumferential cracks were showed in the results of scanning electron microscopy (SEM) when fibers were sintered at 10 degrees Cmin-1. It was useful for preparation of fibers with smooth surface and uniform diameter by controlling the sintering schedule.

• 出版日期2011
• 单位西安交通大学; 中国矿业大学（北京）