On the Microstructure of Aluminum Titanate Powders Coated with Mullite Sol

Jian Er Zhou; Xue Bing Hu; Hui Li Li; Yan Xiang Wang; Yong Qing Wang; Xiao Zhen Zhang

doi:10.4028/www.scientific.net/KEM.368-372.1380

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 368-372On the Microstructure of Aluminum Titanate Powders...

On the Microstructure of Aluminum Titanate Powders Coated with Mullite Sol

Abstract:

The mullite sol was prepared using tetraethyoxysilane (TEOS) as raw materials. Aluminum titanate (AT) powders were coated with the sol by dipping. The influence of the concentration of the mullite sol and pH value on the microstructure of the coated AT powders was studied. The results showed that AT powders are coated homogeneously and the thickness of the mullite film is about 0.15 μm when the concentration of the mullite sol is 0.18 mol·L-1 and pH value is 3.0.