Title :
Preparation and phase stability of YSZ-alumina composite by roller vibration milling
Author :
Sun, Yinzhang ; Wang, Shulin ; Tang, Hongzhi ; Cao, Deming ; Liu, Di
Author_Institution :
Sch. of Energy & Power Eng., Univ. of Shanghai for Sci. & Technol., Shanghai, China
Abstract :
The synthesis of 8mol%Y2O3-ZrO2 (YSZ) with 6 wt% Al2O3 by roller vibration milling at room temperature and phase stability of the calcined composite were investigated. The alloying process contained plastic deformation, grain size reduction, particle implantation and atomic diffusion. Disappearance of alumina feature in composite after MA for 45h confirmed the dissolution of alumina in YSZ. It was the grain size reduction that promoted the particle implantation. Phase stability at high temperature analysis reveals the composite can be employed as thermal barrier coating materials.
Keywords :
alumina; composite materials; mechanical stability; milling; plastic deformation; thermal barrier coatings; vibrations; yttrium; zirconium compounds; Y2O3-ZrO2; alumina composite; atomic diffusion; grain size reduction; particle implantation; phase stability; plastic deformation; roller vibration milling; thermal barrier coating material; time 45 h; yttria partially stabilized zirconia; Materials; Microstructure; Vibrations; Alumina; Mechanical alloying; Phase stability; Thermal barrier coating; YSZ;
Conference_Titel :
Materials for Renewable Energy & Environment (ICMREE), 2011 International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-61284-749-8
DOI :
10.1109/ICMREE.2011.5930738
