High-temperature oxidation and hot corrosion behavior of CoMoCrSi coating by APS and HVOF spraying

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2025-04-09 DOI:10.1016/j.surfcoat.2025.132136

Zhiqiang Yang, Daoxin Liu, Yanjie Liu, Kai Zhou, Mengyao Li, Junnan Wu, Kaifa Fan, Xiaohua Zhang

引用次数: 0

Abstract

High-temperature oxidation behavior and hot corrosion failure mechanism of CoMoCrSi coatings (T800) prepared by atmospheric plasma spraying (APS) and high-velocity oxy-fuel spraying (HVOF) were investigated. The HVOF-T800 coating exhibited superior oxidation resistance during the oxidation. In the hot corrosion, the APS-T800 coating developed an external layer of CoMoO₄ and an internal layer of CoCr₂O₄, ultimately leading to internal delamination failure. Nevertheless, the HVOF-T800 coating formed an outer layer of Cr₂O₃, an intermediate layer of CoCr₂O₄, and an inner blocking layer of SiO₂, resulting in interfacial delamination failure as the final failure mode, exhibited greater resistance to hot corrosion medium intrusion.

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.