Study on Thermal Properties of Plasma-Sprayed (La0.4Sm0.5Yb0.1)2Zr2O7 Coatings

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Study on Thermal Properties of Plasma-Sprayed (La0.4Sm0.5Yb0.1)2Zr2O7 Coatings
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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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[Ling Liu, Fuchi Wang, Zhuang Ma, Yingchao Sun. Study on Thermal Properties of Plasma-Sprayed (La_0.4Sm_0.5Yb_0.1)₂Zr₂O₇ Coatings[J]. Rare Metal Materials and Engineering,2017,46(10):2785~2789.]
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Received:September 29,2015
Revised:January 04,2016
Adopted:March 29,2016
Online: December 01,2017
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