High-temperature oxidation resistance of NiCrAlY columnar microcrystalline coating deposited by EDS

Chalcogenide Letters

article

R. Y. Wang¹  X. L. Feng¹  C. Yang¹  R. Wang¹  C. A. Guo¹  J. Zhang¹ 

[1] Shenyang Ligong University, School of Equipment Engineering, no. 6 Nanping Central Road

关键词: NiCrAlY;    High-temperature oxidation;    Electrospark deposition;    Pinning effect;   

DOI  :  10.15251/CL.2022.194.285

学科分类：物理（综合）

来源: Forum of Chalcogeniders

【 摘 要 】

In this paper, the NiCrAlY coating is deposited on the surface of the NiCrAlY alloy substrate by the electrospark deposition method. The phase composition, morphology and element composition of the substrate and coating were characterized by XRD, SEM/EDS. The high-temperature oxidation resistance was tested. The results show that the weight gain of the coating is lower than that of the substrate alloy after high-temperature oxidation. The coating protects the substrate to some extent. And because of the formation of NiCrAlY columnar microcrystalline coating, rich grain boundaries, promoted the diffusion rate of metal ions, resulting in the formation of “pinning effect” of the film/metal interface, improve the anti-stripping performance of the coating.

【 授权许可】

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