Development of Cr-based bulk metallic glass and amorphous alloy coatings via HVOF spraying with exceptional corrosion and wear resistance

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

Surface & Coatings Technology Pub Date : 2025-03-12 DOI:10.1016/j.surfcoat.2025.132036

Xin Li , Qiang Li , Chengwu Zhang , Long Jiang , Guan Zhang , Chuntao Chang

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引用次数: 0

Abstract

A novel Cr₄₀Co₂₃Mo₁₄C₁₅B₆Lu₂ bulk metallic glass (BMG) and its amorphous alloy coating (AAC) were developed and systematically investigated for their corrosion and wear resistance properties. The Cr-based BMG exhibits high glass-forming ability with a critical diameter of 3 mm, and high thermal stability with a glass transition temperature (T_g) of 946 K and a supercooled liquid region (ΔT_x) of 48 K. The corresponding Cr-based AAC, fabricated using high-velocity oxygen-fuel (HVOF) spraying, achieved a high amorphous content of 92.6 % and a microhardness of 1200 HV_1.0, significantly higher than that of SUS316L stainless steel (231 HV_1.0). Electrochemical tests in 1 M HCl revealed corrosion current densities (I_corr) of 3.24 × 10⁻⁷ A/cm² and 5.83 × 10⁻⁷ A/cm² for the Cr-based BMG and AAC, respectively, which are two orders of magnitude lower than Hastelloy C22 (1.41 × 10⁻⁵ A/cm²). The Cr-based AAC maintained excellent corrosion resistance across 3 M and 6 M HCl solutions, supported by stable passivation zones. Under dry sliding wear conditions, the Cr-based BMG and AAC demonstrated wear rates of 1.57 × 10⁻⁵ mm³·N⁻¹·m⁻¹ and 3.75 × 10⁻⁵ mm³·N⁻¹·m⁻¹, respectively, far superior to SUS316L and Hastelloy C22. These findings highlight the potential of the Cr-based amorphous alloys developed in this work for applications requiring exceptional durability in extreme corrosive and abrasive environments.

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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.