Yttria-stabilized-zirconia hollow spheres prepared by atmospheric plasma spray

作     者：Xiaofeng Zhang Kesong Zhou Fa Chang Chen Song Chunming Deng Siyuan Liang 

作者机构：School of Materials Science and EngineeringSouth China University of Technology Institute of New MaterialsGuangzhou Research Institute of Non-ferrous Metals School of Public HealthShandong University 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2014年第12卷第3期

页      面：57-62页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by TBCs research team at Guangzhou Research Institute of Non-ferrous Metals the National "973" Basic Research Project of China (2012CB625100) for providing financial support 

主　　题：Yttria stabilized zircooia Atmospheric plasma spray Spheroidization Phase transformation 

摘      要：Yttria-stabilized-zirconia （YSZ） hollow spheres are widely utilized for their novel physical and chemical properties. However, developing a simple and low-cost method for preparing such hollow spheres still remains a great challenge. In this paper, an atmospheric plasma spray （APS） method is introduced, and the formation mechanism of hollow 7YSZ （ZrO2-7wt%Y2O3） spheres is presented. The hollow sphere morphology was observed by scanning electron microscopy （SEM） when agglomerated and sintered 7YSZ powders were used. Additionally, additive composition changes, phase transformations, and the thermal behavior of 7YSZ powders were analyzed by energy dispersive spectroscopy （EDS）, X-ray diffractometry （XRD）, thermogravimetric analysis （TG） and differential scanning calorimeter analysis （DSC）. Furthermore, the phase transformations of agglomerated and sintered 7YSZ powders, 7YSZ hollow spheres that annealed at various temperatures for different times are analyzed.