Dense nanostructured YSZ coating prepared by low-pressure suspension plasma spraying: Atmosphere control and deposition mechanism

SURFACE & COATINGS TECHNOLOGY

卷:416

Article

Xie, Shiming^1,2  Song, Chen²  Liu, Shaowu¹  He, Pengjiang³  Lapostolle, Frederic¹  Klein, Didier¹  Deng, Chunming²  Liu, Min²  Liao, Hanlin¹ 

[1] Univ Bourgogne Franche Comte, UTBM, CNRS, ICB UMR 6303, F-90010 Belfort, France

[2] Guangdong Acad Sci, Inst New Mat, Natl Engn Lab Modern Mat Surface Engn Technol, Key Lab Guangdong Modern Surface Engn Technol, Guangzhou 51065, Peoples R China

[3] Guangdong Acad Sci, Inst Mat & Proc, Guangzhou 510650, Peoples R China

关键词: Dense nanostructured coating;    Low-pressure suspension plasma spraying (LPSPS);    Atmosphere control;    Deposition mechanism;   

DOI  :  10.1016/j.surfcoat.2021.127175

来源: Elsevier

【 摘 要 】

Suspension plasma spraying (SPS) has attracted more and more attention in terms of the preparation of nanostructured ceramic coatings. However, due to the low mass of the nanopowder, it is challenging to prepare high-density coatings through SPS, and this largely limits its application in the areas such as electrolytes of solid oxides fuel cell (SOFC) and environmental barrier coatings. In this article, a novel suspension spraying technology - low-pressure suspension plasma spraying (LPSPS) - was used to prepare a high-density, nanostructured coating. The results revealed that the environment atmosphere (inert atmosphere versus oxidative atmosphere) played a critical role in the microstructure of the coating. The deposition mechanisms of the coatings in both atmospheres were proposed, and a high-density nanostructured yttria-stabilized zirconia (YSZ) coating was successfully prepared by atmosphere control, based on these deposition mechanisms.

【 授权许可】

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