| PHASE TRANSFORMATION OF ZrO_2-8%Y_2O_3 DURING ANNEALING AT HIGH TEMPERATURE |
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| 作者姓名： | 潘牧 邱风襄 贾世聪 邵刚勤 罗志平 |
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| 作者单位： | Pan Mu Qiu Fengxiang Jia ShicongShao Gangqin Luo ZhipingResearch Institnte for Advanced Materials，Wuhan University of Technology，Wuhan，430070，P. R. China |
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| 摘 要： | In this study,coatings of zirconia alloyed with8wt% yttria were prepared by plasma spraying.A comprehensivesequence of annealing experiments comprising time from 1 to 100hours at temperatures between 1100 and 1500℃ were carried out.It is shown that the T′phase in coatings decomposes into low yttriatetragonal phase(T_1′)and high yttria tetragonal phase(T_2′)following high temperature annealing.The content of YO_(1.5)in T_1′decreases with the increasement of annealing time.Both T_1′andT_2′phases are also “non-transformable”tetragonal phases.Andfurther annealing causes a cubic phase (C) to precipitate fromT_2′.The increasement of C phase is accompanied by the decrease-ment of T_2′phase.The probable mechanism of T′→T_1′ T_2′phase transformation is of spinodal decomposition and that of T_2′→C is of precipitation.
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PHASE TRANSFORMATION OF ZrO_2-8%Y_2O_3 DURING ANNEALING AT HIGH TEMPERATURE |
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| Pan Mu Qiu Fengxiang Jia ShicongShao Gangqin Luo ZhipingResearch Institnte for Advanced Materials,Wuhan University of Technology,Wuhan,P. R. China.PHASE TRANSFORMATION OF ZrO_2-8%Y_2O_3 DURING ANNEALING AT HIGH TEMPERATURE[J].Journal of Wuhan University of Technology. Materials Science Edition,1995(1). |
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| Authors: | Pan Mu Qiu Fengxiang Jia ShicongShao Gangqin Luo ZhipingResearch Institnte for Advanced Materials Wuhan University of Technology Wuhan P R China |
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| Affiliation: | Pan Mu Qiu Fengxiang Jia ShicongShao Gangqin Luo ZhipingResearch Institnte for Advanced Materials,Wuhan University of Technology,Wuhan,430070,P. R. China |
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| Abstract: | |
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| Keywords: | ztrconia alloy yttna annealing phase transformation |
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