Tianpeng Wen, Yao Jin, Zhaoyang Liu, Zhengguo Yan, Jingkun Yu, Lei Yuan
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Preparation of alumina-rich calcium aluminate refractories with improved sintering densification and properties
Abstract
The present work focused on the evolution characteristics in the microstructure and properties of calcium aluminate composite ceramics after heat treatment for raw materials at different temperatures. The results showed that the apparent porosity of all the sintered samples firstly decreased to the minimum at a heat treatment temperature of 1200 °C and then increased with increasing heat treatment temperature. The compressive strength was greatly enhanced after the heat treatment for raw materials due to the significant decrease in porosity, presenting the opposite relationship with the change of porosity. The formation of the interlaced structure in the sintered samples was conducive to improving the densification of the calcium aluminate ceramics. This work provided new avenues of thought regarding the manufacturing of calcium aluminate ceramics and promoted its better application in metallurgy.
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Journal of the Australian Ceramic Society since 1965
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