| 基体条件对等离子喷涂Sm2Zr2O7/NiCoCrAlY功能梯度热障涂层热冲击性能的影响 |
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| 引用本文： | 毕建平,陈晓鸽,张红松.基体条件对等离子喷涂Sm2Zr2O7/NiCoCrAlY功能梯度热障涂层热冲击性能的影响[J].稀土,2012,33(4):54-58. |
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| 作者姓名： | 毕建平 陈晓鸽 张红松 |
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| 作者单位： | 1. 河南工程学院机械系,河南郑州,451191
2. 河南工程学院土木工程系,河南郑州,451191 |
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| 摘 要： | 采用有限元分析软件ANSYS对等离子喷涂Sm2Zr2O7/NiCoCrAlY功能梯度热障涂层在金属基体材质类型、厚度、半径变化时涂层的冲击热应力进行了分析。结果表明,涂层热应力及其应力梯度随着金属基体热膨胀系数增加而增大。当基体厚度超过20 mm后,其对冲击热应力的影响基本可以忽略。涂层热应力随基体半径增加而增大,当超过18 mm后,基体半径对涂层应力影响不大。
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| 关 键 词： | 热障涂层 热冲击 有限元法 |
Effect of Substrate Conditions on Thermal -shocking Properties of Plasma -sprayed Sm2Zr2O7/NiCoCrAlY Functional Graded TBCs |
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| Bi Jian-ping
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CHEN Xiao-ge
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ZHANG Hong-song.Effect of Substrate Conditions on Thermal -shocking Properties of Plasma -sprayed Sm2Zr2O7/NiCoCrAlY Functional Graded TBCs[J].Chinese Rare Earths,2012,33(4):54-58. |
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| Authors: | Bi Jian-ping CHEN Xiao-ge ZHANG Hong-song |
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| Affiliation: | 1.Department of Mechanical Engineering,Henan Institute of Engineering,Zhengzhou 451191,China; 2.Department of Construction Engineering,Henan Institute of Engineering,Zhengzhou 451191,China) |
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| Abstract: | The effects of substrate conditions,including material type,thickness and radius on thermal thocking properties of plasma sprayed Sm2Zr2O7/NiCoCrAlY functional graded thermal barrier coatings were analyzed by ANSYS—a finite element method software.Results show that thermal stresses in coatings increase with increasing of thermal expansion coefficients of substrates.The effect of substrate thickness can be ingored when it is greater than 20 mm.Thermal stresses increase with radius increasing,however,they were almost not affected when substrate radius is over 18mm. |
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| Keywords: | thermal barrier coatings thermal shocking finite element method |
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