Preparation of scandia stabilized zirconia powder using microwave-hydrothermal method  

作　　者：敖红敏 刘向生 张赫 周静 黄小卫 冯宗玉 徐宏 

机构地区：[1]Grirem Advanced Materials Co., Ltd., National Engineering Research Center for Rare Earth Materials, General Research Institute for Nonferrous Metals

出　　处：《Journal of Rare Earths》2015年第7期746-751,共6页稀土学报（英文版）

基　　金：Project supported by National Science and Technology Support Project of China(2012BAB10B11);Rare-earth Adjustment Up grade Projects of Ministry of Industry and Information Technology of China

摘　　要：Scandia stabilized zirconia powder （ScSZ） was first synthesized by a microwave-hydrothermal method. The crystalline and aggregated particle sizes were investigated by means of X-ray diffraction （XRD）, Raman, scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. Weakly agglomerated and well crystallized ScSZ powder was prepared by microwave-heating to 150 ℃ and 2.5 h. The structure of the ScSZ powder changed from a tetragonal to a cubic phase, and accordingly, the powder conductivity was increased from 90.55 to 120.56 ms/cm by the introduction of the mineralizer solutions （KOH＋K2CO3） during the microwave-hydrothermal processing.Scandia stabilized zirconia powder （ScSZ） was first synthesized by a microwave-hydrothermal method. The crystalline and aggregated particle sizes were investigated by means of X-ray diffraction （XRD）, Raman, scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. Weakly agglomerated and well crystallized ScSZ powder was prepared by microwave-heating to 150 ℃ and 2.5 h. The structure of the ScSZ powder changed from a tetragonal to a cubic phase, and accordingly, the powder conductivity was increased from 90.55 to 120.56 ms/cm by the introduction of the mineralizer solutions （KOH＋K2CO3） during the microwave-hydrothermal processing.

关 键 词：scandia stabilized zirconia PREPARATION microwave-hydrothermal MINERALIZER rare earths 

分 类 号：O614.412[理学—无机化学]