ZHANG Guanqiao, WU Yin, LI Jingwei, GAO Rui, XU Mengke, WANG Cong
(School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China)
Abstract: Mechanical properties including biaxial flexural strength, hardness, fracture toughness, as well as aging properties of zirconia ceramics with different content of yttria(3 mol% and 5 mol%) were investigated. Phase composition was calculated based on X-ray diffraction. Surface topography was analyzed via scanning electron microscopy. Thus we could analyze Y2O3’s effect on mechanical and aging properties of zirconia ceramics. The result shows that the mechanical and aging properties of ZrO2-3Y samples are better and worse,respectively, than that of ZrO2-5Y samples.
Key words: zirconia ceramics; yttria; mechanical property; aging property