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Preparation and Characterization of High-quality α-Al_2O_3 /Al_(4.59)Si_(1.41)O_(9.7)/Al_2TiO_5 Multiphase Material

Preparation and Characterization of High-quality α-Al_2O_3 /Al_(4.59)Si_(1.41)O_(9.7)/Al_2TiO_5 Multiphase Material
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摘要 The a-Al2O3/A14.59Si1.4109.7/Al2TiO5 multiphase material with high performance was prepared by reaction sintering. The influence of different formulas on the structures and properties of multiphase material was investigated to determine the optimal formula. Crystalline structure and cell parameters of sintered samples were characterized by XRD. Microstructure of all samples was observed by SEM. The properties of sintered samples were investigated. The results show that corundum phase (a-Al2O3), mullite solid solution phase (A14.59Sil.4109.7) and aluminium titanate phase (A1ETiOs) were formed in the sintered samples. Different formulas would not change the symmetry of each crystalline phase, but caused slight change in their cell parameters. The optimal formula was determined to be coarse corundum of 36%, fine corundum of 21%, total amount of three kinds of clay of 33%, and TiO2 of 12%, which possessed a comparatively ideal microstructure and optimal properties. The a-Al2O3/A14.59Si1.4109.7/Al2TiO5 multiphase material with high performance was prepared by reaction sintering. The influence of different formulas on the structures and properties of multiphase material was investigated to determine the optimal formula. Crystalline structure and cell parameters of sintered samples were characterized by XRD. Microstructure of all samples was observed by SEM. The properties of sintered samples were investigated. The results show that corundum phase (a-Al2O3), mullite solid solution phase (A14.59Sil.4109.7) and aluminium titanate phase (A1ETiOs) were formed in the sintered samples. Different formulas would not change the symmetry of each crystalline phase, but caused slight change in their cell parameters. The optimal formula was determined to be coarse corundum of 36%, fine corundum of 21%, total amount of three kinds of clay of 33%, and TiO2 of 12%, which possessed a comparatively ideal microstructure and optimal properties.
作者 陈捷 阮玉忠
出处 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2013年第7期1055-1061,共7页 结构化学(英文)
基金 Sponsored by Key Projects of Fujian Provincial Department of Science and Technology (2011H0003)
关键词 CORUNDUM MULLITE aluminium titanate structure PROPERTY corundum, mullite, aluminium titanate, structure, property
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