| 等离子喷涂(La0.4Sm0.5Yb0.1)2Zr2O7涂层的热性能研究 |
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| 引用本文： | 刘玲,王富耻,马壮,孙英超.等离子喷涂(La0.4Sm0.5Yb0.1)2Zr2O7涂层的热性能研究[J].稀有金属材料与工程,2017,46(10):2785-2789. |
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| 作者姓名： | 刘玲 王富耻 马壮 孙英超 |
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| 作者单位： | 北京理工大学材料学院,北京理工大学材料学院,北京理工大学材料学院,北京理工大学材料学院 |
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| 摘 要： | 本文采用大气等离子喷涂制备了(La0.4Sm0.5Yb0.1)2Zr2O7涂层，并在相同的条件下制备了Sm2Zr2O7涂层作为对比。分别用扫描电子显微镜和X射线衍射仪分析 LSYZO涂层的微观形貌和相结构，并对两种涂层的热导率进行测定。结果表明，等离子喷涂后LSYZO涂层的相结构未发生变化。LSYZO涂层的结合强度为22 MPa，与SZO涂层相当。LSYZO涂层热震40次后发生失效，其热导率明显低于SZO涂层，这主要与LSYZO陶瓷自身的复杂结构有关。
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| 关 键 词： | 稀土锆酸盐 热性能 热障涂层 |
| 收稿时间： | 2015/9/29 0:00:00 |
| 修稿时间： | 2016/1/4 0:00:00 |
Study on Thermal Properties of Plasma-Sprayed (La0.4Sm0.5Yb0.1)2Zr2O7 Coatings |
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| Ling Liu,Fuchi Wang,Zhuang Ma and Yingchao Sun.Study on Thermal Properties of Plasma-Sprayed (La0.4Sm0.5Yb0.1)2Zr2O7 Coatings[J].Rare Metal Materials and Engineering,2017,46(10):2785-2789. |
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| Authors: | Ling Liu Fuchi Wang Zhuang Ma and Yingchao Sun |
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| Affiliation: | School of Materials Science and Engineering,Beijing Institute of Technology,School of Materials Science and Engineering,Beijing Institute of Technology,School of Materials Science and Engineering,Beijing Institute of Technology,School of Materials Science and Engineering,Beijing Institute of Technology |
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| Abstract: | (La0.4Sm0.5Yb0.1)2Zr2O7 (LSYZO) coating was prepared by atmospheric plasma spray. Sm2Zr2O7 (SZO) coating was also prepared in the same conditions as a contrast. Microstructures and phases of LSYZO coatings were investigated by scanning electrical microscopy and X-ray diffraction, respectively. The thermal conductivities of the two coatings were measured. The results show that the phase composition of LSYZO coating has no change after plasma spraying. The adhesion strength of LSYZO coating is 22 MPa, which is comparable with that of SZO coating. And LSYZO coating has lifetime of about 40 cycles. The thermal conductivity of LSYZO coating is lower than that of SZO coating, which mainly depends on the complex structure of LSYZO ceramic. |
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| Keywords: | rare-earth zirconates thermal properties thermal barrier coatings |
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