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高分散、均混合Al2O3-SiC-ZrO2(3Y)水悬浮液
Preparation of Highly Dispersed and Uniformly Mixed Aqueous Suspension of Al2O3-SiC-ZrO2(3Y) Precursor
【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ZO2(3Y)的先驱体.然后用聚甲基丙烯酸铵(PMAA-NH4)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.
【Abstract】 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.
【关键词】 胶体特性;
表面改性;
高分散悬浮液;
均混合悬浮液;
【Key words】 colloidal behaviour; surfaCe modification; highly dispersed suspension; uniformlymixed suspension;
【Key words】 colloidal behaviour; surfaCe modification; highly dispersed suspension; uniformlymixed suspension;
【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
- 【文献出处】 无机材料学报 ,JOURNAL OF INORGANIC MATERIALS , 编辑部邮箱 ,1999年01期
- 【分类号】TB33
- 【被引频次】20
- 【下载频次】207