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Effects of SiO_2 and Fe_2O_3 on Morphological of Mullite

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Effects of SiO_2 and Fe_2O_3 on morphological of mullite were investigated for a special use related to mullite containing SiO_2 and Fe_2O_3. It was concluded that, when Al_2O_3/SiO_2 ratio near the theoretical component of mullite, the composites cannot been sintered at 1600℃. The normal morphology of mullite presents granule form with Fe_2O_3 addition, while takes a long column shape with the condition of excessive. SiO_2 presenting. Fe_2O_3 can promote sintering of mullite, as well as growing in needle-like morphology.

morphologymulliteSiO_2Fe_2O_3

Cunshu Huang、Jiachen Liu、Anran Guo、Lu Yang、Di Song

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School of Materials Science and Engineering of Tianjin University, Key Lab of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin 300072, China

China Coal Pingshuo Industry Coal Corporation, Shanxi 036000, China

2010

Key engineering materials

Key engineering materials

ISSN:1013-9826
年,卷(期):2010.434/435
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