Preparation of nanometer ZrO2-8%Y2O3 powers by azeotropic distillation processin

2019-06-13 14:28:26

OH Zr processing distillation azeotropic

责任者: Yin, Bangyao;Wang, Lingsen;Zhang, Jinshen;Huan, Yi;Yang, Yong;Ling, Jianliang 单位: Central South Univ of Technology, Changsha, China 来源出处: Transactions of Nonferrous Metals Society of China (English Edition),1999,9(1):44-47 摘要: Gels of Zr(OH)4 and Y(OH)3 prepared by the chemical coprecipitation method were dehydrated by azeotropic distillation processing. Because of the removal of inter-particle free water, the replacement of surface hydroxyl groups with butoxy groups and the steric effects of n-butanol, the close approach of gel particles and Zr-O-Zr chemical bond formation between them were prevented. So the preparation of nanometer ZrO2-8%Y2O3 powers and elimination of hard agglomerates by azeotropic distillation processing result in good sinterability. 关键词: Ceramic materials;Zirconium compounds;Nanostructured materials;Sintering;Distillation;Nanometer powder;Chemical coprecipitation method;Azeotropic distillation;Hard agglomerate