共沉淀法制备ZrO_2-U陶瓷及其性能研究  

Study on the Coprecipitation Method Preparation of ZrO_2-U Ceramics and Its Performance

作　　者：金晓春[1,2] 陈泉水[1,2] 

机构地区：[1]东华理工大学放射性地质与勘探技术国防重点学科实验室,南昌330013 [2]东华理工大学材料科学与工程系,抚州344000

出　　处：《中国陶瓷》2013年第10期17-19,共3页China Ceramics

基　　金：科技部国际合作项目(2009DFR60440);放射性地质与勘探国防重点学科实验室开放基金项目(2011RGET014)

摘　　要：以硝酸氧锆[ZrO(NO3)2·2H2O]和碳酸铀酰铵[(NH4)4UO2(CO3)3]为原料,采用共沉淀法制备了包容铀的氧化锆固化体的前驱体,同时加入硝酸钇作为烧结助剂。探讨了1500℃下固化体的制备工艺。借助XRD、EPMA、SEM等分析手段,对所制备固化体的物相、含量、结构及微观形貌进行了分析。在煅烧温度为1500℃的条件下,可以得到掺杂结构致密、分布均匀、晶相稳定的斜锆石-铀陶瓷固化体。结果表明:固化体主物相以氧化锆物相为主,具有较高的结晶度。Take ZrO（NO3）2.2H20 and （NM4）4UO2（CO3）3 as crude material, the zirconium oxide solidified body precursor that inclusive of uranium was prepared by coprecipitation, At the same time to mix yttrium nitrate as sintering additives. Discusses the preparation of the solidified body under 1500 ℃. To analyzed the body phase, content, structure and microstructure of the solidified body which had preparation with the analysis of XRD, EPMA and SEM. It can make the baddeleyite-ceramic solidification body which contain uranium that has doped dense structure, uniform distribution and a stable crystalline phases on 1500 ℃ which is the calcination temperature. The results indicate that the solidified body main phase is given priority to with zirconia phase and with high crystallinity.

关 键 词：铀 固化体 共沉淀法 烧结助剂 

分 类 号：TQ174.758.11[化学工程—陶瓷工业]