Transformation Behavior and Mechanical Properties of Al2O3/ZrO2(2Y) Ceramic Composites
来源期刊：JOURNAL OF RARE EARTHS2004年增刊第3期
论文作者：SUN Xudong MA Weimin Wang Mei Ma Hui
Key words：Al2O3/ZrO2 (2Y) composites; vacuum sintering; X-ray diffraction; transformation; mechanical properties; rare earths;
Abstract: The content of zirconia has a remarkable influerce on transformation behavior and mechanical properties of Al2O3/ZrO2 (2Y) composites. When 15% and 20% ZrO2(2Y) was added to Al2O3, the bending strength and fracture of the content of ZrO2 (2Y) on transformation and mechanical properties was investigated. The changes of m-ZrO2 and t-ZrO2 phases content before and after fracture were measured by X-ray diffraction quantitative phase analysis, It is shown that improvement in bending strength and fracture toughness of the Al2O3/ ZrO2 (2Y) composites is due to the phase transformation toughening mechanism of ZrO2 (2Y) and thermal expansion mismatch.
SUN Xudong1，MA Weimin2，Wang Mei2，Ma Hui3
(1.Departmant of Basic Courses, Shenyang University, Shenyang 110044, China;
2.College of Materials and Metallurgy, Northeastern University, Shenyang 110004, China;
3.College of Automobile Industry Shenyang,Shenyang 110015, China)
Abstract:The content of zirconia has a remarkable influerce on transformation behavior and mechanical properties of Al2O3/ZrO2 (2Y) composites. When 15% and 20% ZrO2(2Y) was added to Al2O3, the bending strength and fracture of the content of ZrO2 (2Y) on transformation and mechanical properties was investigated. The changes of m-ZrO2 and t-ZrO2 phases content before and after fracture were measured by X-ray diffraction quantitative phase analysis, It is shown that improvement in bending strength and fracture toughness of the Al2O3/ ZrO2 (2Y) composites is due to the phase transformation toughening mechanism of ZrO2 (2Y) and thermal expansion mismatch.
Key words:Al2O3/ZrO2 (2Y) composites; vacuum sintering; X-ray diffraction; transformation; mechanical properties; rare earths;
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