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Mo基體上鋯酸鑭熱障涂層的研究
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Study on Lanthanum Zirconate Thermal Barrier Coating on Mo Substrate
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    摘要:

    利用自行研制的La1.4Nd0.6Zr2O7（LNZ）噴涂粉末，采用大氣等離子噴涂在Mo基體上制備LNZ熱障涂層。測(cè)試粉末的各項(xiàng)熱物理性能，考核涂層的抗熱震性能和高溫隔熱性能，并與常規(guī)氧化釔穩(wěn)定氧化鋯（YSZ）涂層進(jìn)行比較。結(jié)果表明，與YSZ相比，LNZ由于具有熱膨脹系數(shù)小、導(dǎo)熱系數(shù)低、燒結(jié)速率低等特點(diǎn)而更適合在Mo基體作為熱障涂層使用。

    Abstract:

    The thermal barrier coating of La1.4Nd0.6Zr2O7(LNZ) on Mo substrate was prepared by the air plasma spraying with self-developed LNZ thermal spray powder. The thermal physical properties of LNZ powder were examined. The thermal shock resistence and thermal barrier effects of LNZ coatings were tested and compared with those of yttria stabilized zirconia(YSZ) thermal barrier coating. The results show that comparing with YSZ coating, LNZ thermal barrier coating is more suitable for Mo substrate because of its lower thermal expansion coefficient, lower thermal conductivity and sintering rate.

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王 璟,白書欣,李 順,張長(zhǎng)瑞. Mo基體上鋯酸鑭熱障涂層的研究[J].稀有金屬材料與工程,2010,39(5):824~827.[Wang Jing, Bai Shuxin, Li Shun, Zhang Changrui. Study on Lanthanum Zirconate Thermal Barrier Coating on Mo Substrate[J]. Rare Metal Materials and Engineering,2010,39(5):824~827.]
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  • 收稿日期:2009-05-19
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