人工晶体学报2017，Vol.46Issue(12)：2332-2336,5.
磷酸盐结合法制备Al2O3多孔陶瓷及性能
Preparation and Properties of Porous Alumina Ceramics by Phosphate Bonding Method
摘要
Abstract
Porous alumina ceramics were prepared by methods of compression molding , drying and sintering with calcined α-Al2 O3 powder as aggregate , aluminum dihydrogen phosphate as binder and paraffin as molding promoter .The effect of sintering temperature and aluminum dihydrogen phosphate content on microstructure , phase composition , linear shrinkage , porosity and flexural strength were studied.The mechanisms of sintering by phosphate bonding method were discussed .Results show that the phase compositions of porous alumina ceramics are α-Al2 O3 and AlPO4 .Porous alumina ceramics are formed by AlPO4 bonding among alumina particles at low temperature .With increasing aluminum dihydrogen phosphate content , the linear shrinkage and flexural strength increase smoothly , while the porosity decrease .The existence of AlPO 4 accelerates the liquid-phase sintering among the alumina particles at high temperature .The linear shrinkage and flexural strength increase sharply with increasing sintering temperature , and the porosity decrease obviously .关键词
磷酸二氢铝/氧化铝/磷酸盐结合法/多孔陶瓷/磷酸铝Key words
aluminum dihydrogen phosphate/alumina/phosphate bonding method/porous ceramics/aluminum phosphate分类
化学化工引用本文复制引用
冯鑫,刘涛,黎阳..磷酸盐结合法制备Al2O3多孔陶瓷及性能[J].人工晶体学报,2017,46(12):2332-2336,5.基金项目
贵州省教育厅自然科学研究项目([2015]363) （[2015]363）
国家自然科学基金(51462004) （51462004）
