Formation of Barium Zirconate Fibers for High-Temperature Thermal Insulation Applications

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• 作者：Kangkang Yuan ; Xinqiang Wang ; Hongjing Liu ; Cong Feng ; Benxue Liu ; Ningning Cai ; Xuejun Lin ; Luyi Zhu ; Guanghui Zhang and Dong Xu
• 刊名：Journal of the American Ceramic Society
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：99
• 期：9
• 页码：2913-2919
• 全文大小：1569K
• ISSN：1551-2916

文摘

A simple and cost-effective method was used for the fabrication of BaZrO₃ (BZ) fiber. The crystallization of BZ fiber was a simultaneous process with the decomposition of BaCO₃ which was formed during the pyrolysis process of the precursor fiber. The surface cracks of the fiber induced by the organic decomposition converted to grain boundaries during the grain growth at high temperatures. A simple model was used to describe the evolution mechanism of the transformation from surface cracks to grain boundaries. High-temperature resistance test results show that the fiber brick can keep the high-temperature stability at 1300°C with the density of about 0.23 g/cm³.