摘要
用微波法制备纳米水合二氧化锆，通过包覆工艺，将Y（OH）_3均匀地包覆在水合二氧化锆粒子表面，制备出ZO_2（3Y）的先驱体.然后用聚甲基丙烯酸铵（PMAA－NH_4）对α－Al2O3、纳米SiC及包覆水合二氧化锆表面改性．使三种单相水悬浮液在PH＝9．0时，粒子表面电性相同，且有良好分散状态．从而制备出高分散、均混合Al2O3－SiC－ZrO2（3Y）先驱体水悬浮液．
Zro2(3Y) precursor was prepared via hydrous-zirconia which was Y(OH)3-coated preparedby microwave heating coated with Y(OH)3. The surfaCes of Al2O3, nanometer SiC and Y(OH)3coated hydrous-zirconia particles were modified with PMAA-NH4, so that three kinds of periclesin aqueous suspensions had the same charge and highly dispersed state at PH=9.0. Finally, ahighly dispersed and uniformly mixed suspension of Al2O3-SiC-ZrO2(3Y) precursor was obtainedfrom miting three kinds of single suspension.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第1期43-48,共6页
Journal of Inorganic Materials
基金
国家自然科学基金!59572010
清华大学新型陶瓷与精细工艺国家重点实验室资助
关键词
胶体
改性
分散
混合
悬浮液
复合陶瓷
colloidal behaviour, surfaCe modification, highly dispersed suspension, uniformlymixed suspension
