摘要
本文采用ZrOCl_2·8H_2O、Sm_2O_3和Yb_2O_3粉体作为原材料,用化学共沉淀法制备出(Sm_(1-x)Yb_x)_2Zr_2O_7(x=0,0.5,1.0)粉体。粉体经煅烧后,用无压烧结工艺获得(Sm_(1-x)Yb_x)_2Zr_2O_7块体材料。通过X射线衍射(XRD)、扫描电镜(SEM)和能谱分析(EDS),对在不同热处理条件和不同腐蚀剂作用下(Sm_(1-x)Yb_x)_2Zr_2O_7块体材料的相组成和微观组织结构进行比较和分析,系统地研究了(Sm_(1-x)Yb_x)_2Zr_2O_7材料热腐蚀机理。
In this study,（ Sm_（1- x）Yb_x）_2Zr_2O_7（ x = 0,0. 5,1. 0） ceramic powders were prepared through chemical-coprecipitation method with Sm_2O,Yb_2O_3and ZrOCl_2·8H_2O powder as raw materials. The asprepared powders were calcinated and then pressureless-sintered to obtain（ Sm_（1- x）Yb_x）_2Zr_2O_7bulk materials. Its phase compositions and microstructures were investigated using X-ray diffraction（ XRD）,scanning electron microscopy（ SEM） and energy-dispersive X-ray spectroscopy（ EDS） measurements under different corrosive agents and heat treatments conditions. The hot corrosion mechanisms of（ Sm_（1- x）Yb_x）_2Zr_2O_7ceramic were systematically investigated.
作者
李洒
欧阳家虎
LI Sa OUYANG Jia-hu(Institute for Advanced Ceramics, Department of Materials Science, Harbin Institute of Technology, Harbin Heilongjiang 150001, China)
出处
《热处理技术与装备》
2016年第5期16-22,共7页
Heat Treatment Technology and Equipment
