| THE EFFECT OF SUBZERO TREATMENT ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Y_2O_3-ZrO_2 CERAMIC |
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| 作者姓名： | LI Ying WANG Xiaotian JIN Zhihao Xi'an Jiaotong University Xi'an China SHl Guoshun Beijing Measuring and Analysing Center.Beijing China |
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| 作者单位： | LI Ying;WANG Xiaotian;JIN Zhihao Xi'an Jiaotong University，Xi'an，China SHl Guoshun Beijing Measuring and Analysing Center.Beijing，China |
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| 摘 要： | The effect of subzero treatment on the microstructure and mechanical properites of Y_2O_3-ZrO_2 ceramic have been investigated by TEM,X-ray diffraction and test of mechanicalproperties.It was shown that the microstructre of 3Y-PSZ after subzero treatment byliquid nitrogen exhibits very long and parallel laths of m-phase and some microcracksaround the larger and finer lath of m-phase may be discovered.Suitable subzero treatmentcan improve the strength and toughness of Y-PSZ efficiently because of decreasing thestability of t-phase and incresing the amount of t-m transformation when exerting astress.However,when the time of subzero treatment exceeds,the over aging effect mayarise.which can decrease the strength and toughness of the material.
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| 收稿时间： | 1992-12-11 |
| 修稿时间： | 1992-12-11 |
THE EFFECT OF SUBZERO TREATMENT ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Y_2O_3-ZrO_2 CERAMIC |
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| LI Ying,WANG Xiaotian,JIN Zhihao Xi''''an Jiaotong University,Xi''''an,China SHl Guoshun Beijing Measuring and Analysing Center.Beijing,China.THE EFFECT OF SUBZERO TREATMENT ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Y_2O_3-ZrO_2 CERAMIC[J].Acta Metallurgica Sinica(English Letters),1992,5(12):516-520. |
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| Authors: | LI Ying WANG Xiaotian JIN Zhihao Xi'an Jiaotong University Xi'an China SHl Guoshun Beijing Measuring and Analysing Center |
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| Affiliation: | LI Ying,WANG Xiaotian,JIN Zhihao Xi'an Jiaotong University,Xi'an,China SHl Guoshun Beijing Measuring and Analysing Center.Beijing,China |
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| Abstract: | The effect of subzero treatment on the microstructure and mechanical properites of Y_2O_3- ZrO_2 ceramic have been investigated by TEM,X-ray diffraction and test of mechanical properties.It was shown that the microstructre of 3Y-PSZ after subzero treatment by liquid nitrogen exhibits very long and parallel laths of m-phase and some microcracks around the larger and finer lath of m-phase may be discovered.Suitable subzero treatment can improve the strength and toughness of Y-PSZ efficiently because of decreasing the stability of t-phase and incresing the amount of t-m transformation when exerting a stress.However,when the time of subzero treatment exceeds,the over aging effect may arise.which can decrease the strength and toughness of the material. |
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| Keywords: | Y_2O_3-ZrO_2 partially stabilized zirconia(PSZ) transformation strengthenign and toughening subzero treatment |
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