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等離子噴涂(La0.4Sm0.5Yb0.1)2Zr2O7涂層的熱性能研究
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北京理工大學(xué)材料學(xué)院,北京理工大學(xué)材料學(xué)院,北京理工大學(xué)材料學(xué)院,北京理工大學(xué)材料學(xué)院

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

    本文采用大氣等離子噴涂制備了(La0.4Sm0.5Yb0.1)2Zr2O7涂層，并在相同的條件下制備了Sm2Zr2O7涂層作為對比。分別用掃描電子顯微鏡和X射線衍射儀分析 LSYZO涂層的微觀形貌和相結(jié)構(gòu)，并對兩種涂層的熱導(dǎo)率進行測定。結(jié)果表明，等離子噴涂后LSYZO涂層的相結(jié)構(gòu)未發(fā)生變化。LSYZO涂層的結(jié)合強度為22 MPa，與SZO涂層相當。LSYZO涂層熱震40次后發(fā)生失效，其熱導(dǎo)率明顯低于SZO涂層，這主要與LSYZO陶瓷自身的復(fù)雜結(jié)構(gòu)有關(guān)。

    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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劉玲,王富恥,馬壯,孫英超.等離子噴涂(La0.4Sm0.5Yb0.1)2Zr2O7涂層的熱性能研究[J].稀有金屬材料與工程,2017,46(10):2785~2789.[Ling Liu, Fuchi Wang, Zhuang Ma, 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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  • 收稿日期:2015-09-29
  • 最后修改日期:2016-01-04
  • 錄用日期:2016-03-29
  • 在線發(fā)布日期: 2017-12-01
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