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等離子蒸發(fā)沉積熱障涂層抗CMAS附著研究進展
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航天特種材料及工藝技術(shù)研究所

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Research Status on Plasma Spray-Physical Vapor Deposited Thermal Barrier Coatings against the Adhesion of Molten CMAS Deposits
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1.Aerospace Institute of Advanced Materials & Processing Technology;2.Aerospace Institute of Advanced Materials & Processing Technology

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    摘要:

    熱障涂層是先進航空發(fā)動機核心熱端部件高壓渦輪葉片的關(guān)鍵技術(shù),隨著發(fā)動機服役溫度的不斷提高,一種主要化學(xué)成分為CaO-MgO-Al2O3-SiO2(簡稱CMAS)的環(huán)境沉積物對葉片的危害日益嚴(yán)重,不僅堵塞葉片表面氣膜冷卻孔,影響葉片冷效,而且導(dǎo)致熱障涂層早期剝落失效,服役壽命大幅度降低。高溫熔融CMAS在涂層表面的附著過程及防護方法是目前熱障涂層研究領(lǐng)域的熱點和難點。本文針對新型的等離子蒸發(fā)沉積技術(shù),梳理了近年來國內(nèi)外學(xué)者在熱障涂層抗CMAS附著、滲入和腐蝕方面的最新研究成果,指出了涂層抗CMAS侵蝕研究的發(fā)展方向。

    Abstract:

    Due to the increasing demand for higher operating temperatures in gas turbine engines, a reliability problem has emerged on TBCs by the attack of calcium-magnesium-alumino-silicate (CMAS) deposits. These contaminants yield glassy melts adhering to the TBC surface at high temperatures, followed by infiltrating and interacting into/with TBC, which result in its severe degradation and premature failure. The adhesion of molten CMAS and the protection methods are hot and difficult points in the field of thermal barrier coatings. In this paper, the latest research results on CMAS adhesion, infiltration and corrosion resistance of plasma spray-physical vapor deposited thermal barrier coatings are reviewed. The approaches for developing corrosion-resistant TBCs were proposed.

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張寶鵬,于新民,劉偉,霍鵬飛,金鑫.等離子蒸發(fā)沉積熱障涂層抗CMAS附著研究進展[J].稀有金屬材料與工程,2020,49(10):3646~3652.[Zhang Baopeng, Yu Xinmin, Liu Wei, Huo Pengfei, Jin Xin. Research Status on Plasma Spray-Physical Vapor Deposited Thermal Barrier Coatings against the Adhesion of Molten CMAS Deposits[J]. Rare Metal Materials and Engineering,2020,49(10):3646~3652.]
DOI：10.12442/j. issn.1002-185X.20190881

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  • 收稿日期:2019-10-25
  • 最后修改日期:2019-12-31
  • 錄用日期:2020-01-03
  • 在線發(fā)布日期: 2020-11-04
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