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Formation of Barium Zirconate Fibers for High‐Temperature Thermal Insulation Applications
Author(s) -
Yuan Kangkang,
Wang Xinqiang,
Liu Hongjing,
Feng Cong,
Liu Benxue,
Cai Ningning,
Lin Xuejun,
Zhu Luyi,
Zhang Guanghui,
Xu Dong
Publication year - 2016
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.14298
Subject(s) - materials science , fiber , crystallization , composite material , thermal decomposition , thermal stability , barium , zirconate , fabrication , pyrolysis , grain growth , grain boundary , grain size , decomposition , ceramic , mineralogy , microstructure , chemical engineering , metallurgy , chemistry , medicine , alternative medicine , organic chemistry , pathology , engineering , titanate
A simple and cost‐effective method was used for the fabrication of BaZrO 3 ( BZ ) fiber. The crystallization of BZ fiber was a simultaneous process with the decomposition of Ba CO 3 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/cm 3 .