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HCPEB轟擊對(duì)熱障涂層結(jié)構(gòu)及抗CMAS腐蝕性能的影響
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1.中國(guó)民航大學(xué) 天津市民用航空器適航與維修重點(diǎn)實(shí)驗(yàn)室;2.北京凌空天行科技有限公司

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國(guó)家自然科學(xué)基金項(xiàng)目（面上項(xiàng)目，重點(diǎn)項(xiàng)目，重大項(xiàng)目）


Influence of HCPEB Bombardment on the Microstructure and Corrosion Resistance of CMAS of Thermal Barrier Coating
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Affiliation:

Tianjin Key Laboratory for Civil Aircraft Airworthiness and Maintenance，Civil Aviation University of China

Fund Project:

China Postdoctoral Science Foundation

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    摘要:

    利用強(qiáng)流脈沖電子束對(duì)大氣等離子噴涂制備的熱障涂層進(jìn)行表面改性，分別對(duì)原始涂層和電子束改性涂層進(jìn)行1250℃的CMAS腐蝕實(shí)驗(yàn)，采用XRD、SEM和EDS表征腐蝕前后原始涂層和電子束改性涂層的物相組成、微觀結(jié)構(gòu)和化學(xué)成分變化，對(duì)比分析原始涂層和改性涂層的CMAS腐蝕行為及影響規(guī)律。結(jié)果表明，改性涂層表面粗糙度降低，且生成了具有柱狀晶的致密重熔層，涂層表面具有更好的結(jié)構(gòu)穩(wěn)定性及相穩(wěn)定性，改性涂層經(jīng)CMAS腐蝕8h后結(jié)構(gòu)依然完整，涂層并未發(fā)生脫落失效，具有較好的抗CMAS腐蝕能力。

    Abstract:

    The thermal barrier coating prepared by atmospheric plasma spraying was modified by high-current pulsed electron beam. The original coating and the electron beam modified coating were subjected to CMAS corrosion experiments at 1250℃, respectively. The phase composition, microstructure and chemical composition of the original coating and the electron beam modified coating before and after corrosion were characterized by XRD, SEM and EDS, and the CMAS corrosion behaviors and influence laws of the original coating and the modified coating were compared and analyzed. The results show that the surface roughness of the modified coating decreases, and a dense remelting layer with columnar crystals is formed. The surface of the coating has better structural stability and phase stability. After 8 hours of CMAS corrosion, the structure of the modified coating remains intact, and the coating does not fail to fall off, so it has good resistance to CMAS corrosion.An experimental set-up was designed for measuring the self-field losses of Bi2223/Ag HTS tapes using a transport current method.

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韓志勇,李雪曉,盧博文,嚴(yán)慧羽. HCPEB轟擊對(duì)熱障涂層結(jié)構(gòu)及抗CMAS腐蝕性能的影響[J].稀有金屬材料與工程,2023,52(6):2147~2153.[Han Zhiyong,李雪曉,Lu Bowen, Yan Huiyu. Influence of HCPEB Bombardment on the Microstructure and Corrosion Resistance of CMAS of Thermal Barrier Coating[J]. Rare Metal Materials and Engineering,2023,52(6):2147~2153.]
DOI：10.12442/j. issn.1002-185X.20220433

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歷史
  • 收稿日期:2022-05-17
  • 最后修改日期:2022-08-29
  • 錄用日期:2022-09-19
  • 在線發(fā)布日期: 2023-07-07
  • 出版日期: 2023-06-30