| 溶胶-凝胶法在氧化铝板晶和微粉表面包裹玻璃涂层 |
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| 引用本文： | 周振君,杨正方,袁启明,李秀华.溶胶-凝胶法在氧化铝板晶和微粉表面包裹玻璃涂层[J].硅酸盐通报,2003,22(6):79-82,87. |
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| 作者姓名： | 周振君 杨正方 袁启明 李秀华 |
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| 作者单位： | 天津大学高温结构陶瓷及工程陶瓷加工技术教育部重点实验室,天津,300072 |
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| 摘 要： | 以硅酸乙酯和硝酸钙为原料，制备了CaO-SiO2溶胶。采用液相包裹技术在氧化铝板晶和粉末表面上包裹了一层Ca0-SiO2玻璃。用DTA／TGA研究了凝胶热分解过程。用SEM观察表明，玻璃涂层在氧化铝板晶或氧化铝微粉团聚体表面上的分布是均匀的。
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| 关 键 词： | 溶胶-凝胶法 氧化铝板晶 氧化铝粉末 玻璃涂层 硅酸乙酯 硝酸钙 液相包裹 |
Preparation of Glass-Coated α-Alumina Platelet and Powder by Sol-Gel Method |
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| Zhou Zhenjun,Yang Zhengfang,Yuan Qiming,Li Xiuhua.Preparation of Glass-Coated α-Alumina Platelet and Powder by Sol-Gel Method[J].Bulletin of the Chinese Ceramic Society,2003,22(6):79-82,87. |
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| Authors: | Zhou Zhenjun Yang Zhengfang Yuan Qiming Li Xiuhua |
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| Abstract: | A CaO-SiO 2 sol was obtained by the hydrolysis of tetraethyl silicate with an aqueous solution of calcium nitrate.Alumina platelets and powders coated with CaO-SiO 2 glass were prepared by liquid coating technology .The pyrolysis process of the gel in heat-treatment was studied with DTA/TGA.The glass was found to be uniformly coated on the alumina platelets or particel aggregates by means of SEM. |
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| Keywords: | sol-gel alumina platelet alumina powder glass coating |
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