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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(英文),2017,46(10):2785~2789.[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.]
Study on Thermal Properties of Plasma-Sprayed (La0.4Sm0.5Yb0.1)2Zr2O7 Coatings
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Received:September 29, 2015  Revised:January 04, 2016
Key words: rare-earth zirconates  thermal properties  thermal barrier coatings
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Ling Liu,Fuchi Wang,Zhuang Ma and Yingchao Sun  
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      (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.