Deposition and interfacial characterization of Fe-based amorphous coating deposited on AZ31B magnesium alloy

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

Surface & Coatings Technology Pub Date : 2025-03-01 DOI:10.1016/j.surfcoat.2025.131996

Xuqiang Li , Haimin Zhai , Wensheng Li , Meng Wang , Zheyun Zhang , Shuai Cui

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Abstract

This study investigated the microstructure, residual stress, and bonding performance of Fe-based amorphous coatings (AMCs) on AZ31B magnesium alloy substrates to elucidate the deposition mechanisms and interfacial characterization. The results demonstrate that the coatings possess a typical amorphous structure, with amorphous content exceeding 95 % in all cases. The impact of particles caused a molten layer on the surface of the magnesium alloy substrate, facilitating atomic diffusion and resulting in a localized metallurgical bonding at the coating-substrate interface. The internal lamellar interface of the coating primarily relies on mechanical and physical bonding due to oxidation. Additionally, the near-interface magnesium alloy substrate effectively reduces the strain mismatch at the coating-substrate interface and dissipates residual stresses in the coating through its own plastic deformation, resulting in near-zero residual stress. Nonetheless, due to stress release and the edge-loaded plate cracking model, weak bonding regions, approximately 50–170 μm, exist in the Fe-based AMCs on AZ31B magnesium alloy substrate. Beyond this range, the surface properties of the coating were significantly improved. These findings provide valuable insights for the design of coatings on magnesium alloy surfaces and the reduction of residual stresses in thermal spray coatings.

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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.