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(MgO·Y2O3)稳定ZrO2的研究

A Study on (MgO·Y2O3) Costabilized Zirconia Ceramic

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【作者】 吴建锋徐晓虹孙淑珍任永光

【Author】 Wu Jianfeng Xu Xiaohong Sun Shuzhen Ren Yongguang (Institute of Material Science and Engineering,Wuhan University of Technology)

【机构】 武汉工业大学材料科学与工程学院!430070

【摘要】 本研究在MgO- PSZ 基础上引入Y2O3 共同稳定ZrO2 ,采用溶胶—凝胶法制得MgO- Y2O3 - ZrO2 超微细粉,经成型、烧结制得( Mg、Y) —PSZ 陶瓷材料。经性能及微观结构测试,结果表明用此法制得的材料,其烧结温度从1600 ℃降至1450 ℃,晶粒尺寸减小至1 ~2μm ,抗弯强度及断裂韧性明显提高。

【Abstract】 The study introduced yttria for costabilizing zirconia on the basis of MgO-PSZ,and prepared ultra-fine active powders of MgO-Y 2O 3-ZrO 2 system by sol-gel method.The (Mg、Y)-PSZ ceramic was made by dry pressing,isostatic pressing and sintering processes.The tests of the properties and microstructure of the material were carried out.The results showed that its sintering temperature was decreased to 1450℃ from 1600℃,and the grain size to 1~2μm,and the strengh and fracture toughness were increased markedly.

【基金】 湖北省重点科技攻关项目
  • 【文献出处】 硅酸盐通报 ,BULLETIN OF THECHINESE CERAMIC SOCIETY , 编辑部邮箱 ,1999年05期
  • 【分类号】TQ174.1
  • 【被引频次】18
  • 【下载频次】167
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