Preparation of transparent mullite-silica film by heat-treatment of imogolite
作者： N. Donkai , T. Miyamoto , T. Kokubo , H. Tanei
DOI: 10.1007/BF01133770
关键词: Aqueous solution 、 Amorphous solid 、 Materials science 、 Chemical engineering 、 Mineralogy 、 Thermal expansion 、 Imogolite 、 Solvent 、 Transparent ceramics 、 Mullite 、 Aluminium silicate
摘要: Natural gel-like imogolite was dispersed in an acetic acid aqueous solution. An film prepared by evaporating the solvent from solution and then subjecting it to heat-treatment. It transformed amorphous at around 500°C a mullite-silica composite 1000°C without giving pore cracks. The heat treated 1200°C showed high transparency as well low thermal expansion coefficient of about 4×10−6.
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