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EB-PVD熱障涂層熱循環(huán)性能評(píng)價(jià)方法研究
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高等學(xué)校博士學(xué)科點(diǎn)專項(xiàng)科研基金(20070425015)


Evaluation Method of Thermal Cycling Property of EB-PVD Thermal Barrier Coatings
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    摘要:

    制備8批次EB-PVD雙層結(jié)構(gòu)熱障涂層試樣,采用循環(huán)加熱快速冷卻實(shí)驗(yàn)裝置模擬熱障涂層服役環(huán)境,開展了熱障涂層試樣在不同熱循環(huán)保溫時(shí)間條件下的熱循環(huán)性能評(píng)價(jià)實(shí)驗(yàn),采用指數(shù)下降的數(shù)學(xué)模型對(duì)熱循環(huán)實(shí)驗(yàn)數(shù)據(jù)進(jìn)行擬合分析,獲得了表征熱障涂層試樣靜態(tài)氧化性能和熱疲勞性能的物理量。結(jié)果表明,在本實(shí)驗(yàn)工藝條件下制備的不同批次熱障涂層試樣的靜態(tài)氧化性能和熱疲勞性能具有不同的匹配關(guān)系,熱障涂層試樣靜態(tài)氧化性能總體估計(jì)值為(677±194) h,熱疲勞性能總體估計(jì)值為(6789±1818)次。

    Abstract:

    Thermal cycling testing to the 8 batches of thermal barrier coating samples for different holding time was carried out by means of cycling heating and cooling apparatus to simulate TBCs service environment. Using a mathematical model of exponential decline to fit thermal cycle experimental data, characterization parameters of static oxidation performance and thermal fatigue performance of thermal barrier coated samples were obtained. The result indicates that static state oxidation performance and thermal fatigue performance of TBCs samples prepared under present experimental technology conditions have different match relation. The estimated value for static state oxidation performance is 677±194 h, and the estimated value for thermal fatigue performance is 6789±1818 times.

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陳立強(qiáng),宮聲凱,徐惠彬. EB-PVD熱障涂層熱循環(huán)性能評(píng)價(jià)方法研究[J].稀有金屬材料與工程,2013,42(2):340~344.[Chen Liqiang, Gong Shengkai, Xu Huibin. Evaluation Method of Thermal Cycling Property of EB-PVD Thermal Barrier Coatings[J]. Rare Metal Materials and Engineering,2013,42(2):340~344.]
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  • 收稿日期:2012-02-11
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