增强 NbTaMoW 中熵合金涂层在模拟 PEMFC 环境中的耐腐蚀性：实验和计算见解

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2024-10-03 DOI:10.1016/j.corsci.2024.112499

Minming Jiang , Jiang Xu , Chaowei Liu , Zong-Han Xie , Paul R. Munroe

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引用次数: 0

摘要

利用双阴极辉光放电技术在 304 不锈钢上沉积了一层抗腐蚀导电 NbTaMoW 中等熵合金 (MEA) 涂层。这种 MEA 涂层呈现出单体中心立方相，晶粒约为 10 nm，在任何给定的 HF 浓度下都能形成耐腐蚀性能显著增强的钝化膜。铌原子对氧原子的吸附能较低，导致钝化膜中的铌氧化物富集，有利于阻碍 F 离子的快速扩散。这些发现强调了 NbTaMoW MEA 涂层在提高 PEMFC 的耐用性和效率方面的潜力。

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Enhanced corrosion resistance of NbTaMoW medium entropy alloy coatings in simulated PEMFC environments: Experimental and computational insights

An anti-corrosive and conductive NbTaMoW medium entropy alloy (MEA) coating was deposited on 304 stainless steel using a dual-cathode glow discharge technology. This MEA coating exhibits a single body-centered cubic phase with about 10 nm grains, and forms a passivation film with significantly enhanced corrosion resistance at any given HF concentration. The lower adsorption energy of Nb atoms for oxygen atoms leads to the enrichment of Nb oxides in the passivation film, which is beneficial for hindering the rapid diffusion of F⁻ ions. These findings underscore the potential of NbTaMoW MEA coatings to improve the durability and efficiency of PEMFCs.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.