The corrosion behavior of Fe-Co-Si alloy under magnetic field

IF 2.6 4区化学 Q3 ELECTROCHEMISTRY

Journal of Solid State Electrochemistry Pub Date : 2024-07-02 DOI:10.1007/s10008-024-05987-3

Shujian Zhang, Qingdong Zhong, Jian Yang, Dan Wang

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Abstract

The advanced soft magnetic material Fe-Co-Si ternary alloy has become a research hotspot in recent years due to its excellent balanced magnetic properties. When used in an environment where oceans and magnetic fields interact, the corrosion behavior of this alloy is currently not well understood. In this study, immersion experiments and electrochemical tests have been used to explore its corrosion behavior under conditions of no magnetic field, a uniform parallel magnetic field, and a vertical magnetic field with a magnetic field. The results indicate that the presence of a magnetic field accelerates corrosion while suppressing pitting and intergranular corrosion of the alloy. Moreover, compared to the perpendicular magnetic field, the impact is more pronounced when applying a parallel magnetic field due to the synergistic effect of Lorentz force and magnetic field gradient force. Additionally, the presence of Si elements affects the formation of Co oxide passivation film, which reduced the corrosion resistance of the alloy under both magnetic and non-magnetic field conditions. This finding contributes to filling the theoretical gap in the corrosion failure behavior of Fe-Co-Si alloy under magnetic field conditions.

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磁场下铁-钴-硅合金的腐蚀行为

先进的软磁材料铁-钴-硅三元合金因其优异的平衡磁性能而成为近年来的研究热点。在海洋和磁场相互作用的环境中使用时，这种合金的腐蚀行为目前还不十分清楚。本研究采用浸泡实验和电化学测试的方法，探讨了其在无磁场、均匀平行磁场和具有磁场的垂直磁场条件下的腐蚀行为。结果表明，磁场的存在会加速腐蚀，同时抑制合金的点蚀和晶间腐蚀。此外，与垂直磁场相比，由于洛伦兹力和磁场梯度力的协同作用，平行磁场的影响更为明显。此外，硅元素的存在会影响 Co 氧化物钝化膜的形成，从而降低合金在磁场和非磁场条件下的耐腐蚀性。这一发现有助于填补磁场条件下 Fe-Co-Si 合金腐蚀失效行为的理论空白。

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来源期刊

Journal of Solid State Electrochemistry 工程技术-电化学

CiteScore

4.80

自引率

4.00%

发文量

227

审稿时长

4.1 months

期刊介绍： The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry. The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces. The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis. The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.