| 等离子喷涂纳米ZrO_2功能梯度热障涂层的孔隙结构 |
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| 引用本文： | 李振军,张红松,魏媛,陈晓鸽.等离子喷涂纳米ZrO_2功能梯度热障涂层的孔隙结构[J].机械工程材料,2009,33(4). |
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| 作者姓名： | 李振军 张红松 魏媛 陈晓鸽 |
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| 作者单位： | 李振军,张红松,LI Zhen-jun,ZHANG Hong-song(河南工程学院,机械工程系,河南郑州,450007);魏媛,WEI Yuan(河南工程学院,材料与化学工程系,河南郑州,450007);陈晓鸽,CHEN Xiao-ge(河南工程学院,土木工程系,河南郑州,450007)
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| 基金项目： | 河南工程学院博士基金 |
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| 摘 要： | 采用大气等离子喷涂技术制备了纳米ZrO2功能梯度热障涂层,采用定量金相分析技术分别研究了表面陶瓷层、中间层及界面处的孔隙率、孔隙尺寸和孔隙形状.结果表明:各区域的孔隙率、孔隙尺寸和孔隙形状系数服从各自相似的概率分布;界面处孔隙率最高为6.87%,表面陶瓷层和中间层孔隙率略低;涂层中尺寸在1μm以下的孔隙数量最多,约占65%;孔隙大多呈等轴状,所占比例在70%～73%之间.
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| 关 键 词： | 等离子喷涂 梯度热障涂层 孔隙率 孔隙尺寸 |
Pore Structure of the Plasma Sprayed Nanostructured ZrO_2 Gradient Thermal Barrier Coating |
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| LI Zhen-jun,ZHANG Hong-song,WEI Yuan,CHEN Xiao-ge.Pore Structure of the Plasma Sprayed Nanostructured ZrO_2 Gradient Thermal Barrier Coating[J].Materials For Mechanical Engineering,2009,33(4). |
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| Authors: | LI Zhen-jun ZHANG Hong-song WEI Yuan CHEN Xiao-ge |
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| Affiliation: | 1;2;3.Henan Institute of Engineering;Zhengzhou 450007;China |
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| Abstract: | Nanostructured ZrO2 functional gradient thermal barrier coating was prepared by air plasma spraying technology.The porosity,size and shape of the pores in the ceramic layer,intermediate layer and interface between ceramic layer and intermediate layer were analyzed by quantitative analysis technology.The results show that the pores possessed the same microstructure characteristics in the ceramic layer,intermediate layer and interface.The cumulative probability of the porosity,the pore size and the pore shape... |
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| Keywords: | plasma spraying gradient thermal barrier coating porosity pore size |
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