Effect of silicon on properties of Al2O3-SiCw composite ceramics in-situ synthesized by aluminium-assisted carbothermal reduction of coal series kaolin for solar thermal storage
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- 作者：Xinbin Laoa ; laoxinbin@126.com" class="auth_mail" title="E-mail the corresponding author ; Xiaohong Xub ; Jianfeng Wub ; Xiaoyang Xuc ; Yaxiang Zhangb ; Kun Lib
- 关键词：Silicon ; Properties ; Al2O3-SiCw composite ceramics ; Aluminium-assisted carbothermal reduction ; Coal series kaolin ; Solar thermal storage
- 刊名：Journal of Alloys and Compounds
- 出版年：2017
- 出版时间：25 January 2017
- 年：2017
- 卷：692
- 期：Complete
- 页码：825-832
- 全文大小：3443 K
文摘
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Al2O3-SiCw composites were prepared by carbothermal reduction of coal series kaolin (CSK).
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SiC whiskers with high thermal conductivity were in-situ formed by carbothermal reduction.
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Silicon was added to consume silica residual in CSK for synthesizing more SiC whiskers.
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Silicon shew great effects on improving SiC yield and properties of the composites.
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The excess silicon additive (8 wt%) would change the growth mechanism of SiC whiskers.