School of Materials Science and Engineering Shanghai University Shanghai 200072 P. R. China;
Department of Metallurgy and Materials Engineering Katholieke Universiteit Leuven B-3001 Heverlee Belgium;
The State Key Lab of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Science Shanghai 200050 P. R. China;
ZrO2; Y2O3; Ce2O3; CeO2; CeO2-y; Cez Zr1- z O2-x; ceria reduction; thermodynamics; oxygen partial pressure; phase diagram;