钆锆烧绿石粉体的高温固相制备工艺  

Preparation of Pyrochlore Gd_2Zr_2O_7 Powders by High Temperature Solid State Reaction

作　　者：宁明杰[1] 董发勤[2] 张宝述[1] 唐敬友[2] 卢喜瑞[2] 吴彦霖 

机构地区：[1]西南科技大学材料科学与工程学院 [2]西南科技大学核废物与环境安全国防重点学科实验室 [3]日本国立综合研究大学院大学

出　　处：《中国粉体技术》2012年第5期37-39,共3页China Powder Science and Technology

基　　金：国家高技术研究发展计划(863计划)项目;编号:2009AA050703;国家自然科学基金项目;编号:51074131;西南科技大学核废物与环境安全国防重点学科实验室基金项目;编号:11zxnk09

摘　　要：为获得钆锆烧绿石(Gd2Zr2O7)粉体的制备工艺条件,以Gd2O3和ZrO2粉体为原料,在温度为1 300～1 500℃的条件下,采用高温固相法制备钆锆烧绿石粉体;采用X射线衍射法对所制备的样品进行物相与结构分析,用扫描电子显微镜观察样品的微观形貌。结果表明,在常压、保温72 h的条件下,钆锆烧绿石的最佳煅烧温度为1 500℃,此时所制备的晶体结晶程度高,晶粒尺寸在3μm左右。To obtain the process of preparing pyrochlore Gd2Zr2O7 powders, Gd2O3 and ZrO2 were used as raw materials in the experiment. Pyrochlore Gd2Zr2O7 powders were prepared by high temperature solid state method at 1 300-1 500℃ under atmospheric pressure. XRD and SEM were used to analyze the phases, structure and microcosmic shape of synthetic samples. The results indicate that the best synthesis temperature of pyrochlore Gd2Zr2O7 is i 500 ℃. The crystalline degree of samples is high. The average crystal grain size is approximately 3 μm.

关 键 词：烧绿石 制备 高温固相法 

分 类 号：TQ134.12[化学工程—无机化工]