| MICROSTRUCTURE AND THERMAL STRESS RELAXATION OF ZrO_2－Ni FUNCTIONALLY GRADED MATERIAL |
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| 作者姓名： | Zhu Jingchuan Yin Zhongda Lai Zhonghong Li Jian |
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| 作者单位： | School of Materials Science and Engineering，Harbin Institute of Technology，Harbin 150001 |
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| 摘 要： | ＭＩＣＲＯＳＴＲＵＣＴＵＲＥＡＮＤＴＨＥＲＭＡＬＳＴＲＥＳＳＲＥＬＡＸＡＴＩＯＮＯＦＺｒＯ_２－ＮｉＦＵＮＣＴＩＯＮＡＬＬＹＧＲＡＤＥＤＭＡＴＥＲＩＡＬ￥ＺｈｕＪｉｎｇｃｈｕａｎ；ＹｉｎＺｈｏｎｇｄａ；ＬａｉＺｈｏｎｇｈｏｎｇ；ＬｉＪｉａｎ（Ｓｃｈｏ?..
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MICROSTRUCTURE AND THERMAL STRESS RELAXATION OF ZrO_2-Ni FUNCTIONALLY GRADED MATERIAL |
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| Zhu Jingchuan,Yin Zhongda,Lai Zhonghong,Li Jian.MICROSTRUCTURE AND THERMAL STRESS RELAXATION OF ZrO_2-Ni FUNCTIONALLY GRADED MATERIAL[J].Transactions of Nonferrous Metals Society of China,1996(4). |
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| Authors: | Zhu Jingchuan Yin Zhongda Lai Zhonghong Li Jian |
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| Abstract: | The microstructural characteristics and thermal stress relaxation of ZrO_2-Ni functionally gradient materials(FGM) by hot-pressing were studied. The investigation by scanning and transmission electron microscopy as well as Xray diffractometry demonstrated that the chemical compeition and microstructure of ZrO_2-Ni FGM distributed gradiently in stepwise way.The constituents,beth zirconia and nickel,were continuous in micrastructure everywhere,eliminating the macroscopic interface in traditional ceramics/metal joint.By means of finite element methed,the thermal stress distribution in a layered ZrO_2/Ni material(nonFGM) and that in a ZrO_2Ni FGM under an analogical condition with great temperature difference were preliminarily analyzed.It was shown that the thermal stress value in ZrO_2-Ni FGM remarkably decreased and distnbuted more smcothly in compansen with that in ZrO2/Ni non-FGM.Obviously the ZrO2-Ni FGM has the function of thermal stress relaxation. |
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| Keywords: | functionally graded material zirconia nickel microstructure thermal stress relaxation |
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