Corrosion and Tribocorrosion Behaviors of Fe2TiAl–Fe2Ti Alloy

IF 0.7 4区化学 Q4 CHEMISTRY, PHYSICAL

Russian Journal of Physical Chemistry A Pub Date : 2024-10-28 DOI:10.1134/S0036024424701875

Li Rui

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Abstract

In this paper, Fe₂TiAl–Fe₂Ti alloy was prepared by arc melting method, and its corrosion and tribocorrosion behaviors were investigated in detail. The results showed that Fe₂TiAl–Fe₂Ti alloy exhibited better corrosion and tribocorrosion resistance compared to 0Cr18Ni9 stainless steel in 0.5 mol/L H₂SO₄ solution due to the formation of TiO₂–Al₂O₃–Fe₂O₃ protective layer on the surface. Compared to static corrosion, the alloy exhibits a lower corrosion potential, higher corrosion current, and noticeable fluctuations in the polarization curves under sliding conditions. With the onset of sliding, the OCP value of the alloy decreases and the current density increases, with an inversely varying relationship between the friction coefficient and the OCP, indicating a significant wear-accelerated corrosion effect. At higher potentials, the wear volume of Fe₂TiAl–Fe₂Ti alloy and 0Cr18Ni9 stainless steel increases, indicating that corrosion accelerates wear.

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Fe2TiAl-Fe2Ti 合金的腐蚀和摩擦腐蚀行为

本文采用电弧熔炼法制备了 Fe2TiAl-Fe2Ti 合金，并详细研究了其腐蚀和摩擦腐蚀行为。结果表明，在 0.5 mol/L H2SO4 溶液中，由于表面形成了 TiO2-Al2O3-Fe2O3 保护层，Fe2TiAl-Fe2Ti 合金与 0Cr18Ni9 不锈钢相比具有更好的耐腐蚀性和耐摩擦腐蚀性。与静态腐蚀相比，该合金在滑动条件下表现出较低的腐蚀电位、较高的腐蚀电流和明显的极化曲线波动。随着滑动的开始，合金的 OCP 值减小，电流密度增大，摩擦系数与 OCP 呈反向变化关系，表明存在明显的磨损加速腐蚀效应。在较高电位下，Fe2TiAl-Fe2Ti 合金和 0Cr18Ni9 不锈钢的磨损量增加，表明腐蚀加速了磨损。

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来源期刊

Russian Journal of Physical Chemistry A 化学-物理化学

CiteScore

1.20

自引率

14.30%

发文量

376

审稿时长

5.1 months

期刊介绍： Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world. Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.