Evolution of wetted and corroded areas on 8Cr4Mo4V bearing steel exposed to salt water contaminated lubricant oil

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

Corrosion Science Pub Date : 2024-10-15 DOI:10.1016/j.corsci.2024.112515

Wanjun He , Qunfeng Zeng , Qi Xiao , Zeming Pang , Yang Wu , Chao Yan , Shan Huang , Jian Zhuang , Jiahe Wang , Haolin Li , Xunkai Wei

引用次数: 0

Abstract

Relationship between wetted and corroded areas on 8Cr4Mo4V bearing steel during exposure to salt water contaminated lubricant oil was explored by Monte Carlo simulation and corrosion experiment. Results show that locally corroded areas are initially scattered then connected and eventually merged due to droplet coalescence, and are resulted from galvanic, uniform and filiform corrosions, respectively. Droplet coalescence also redistributes wetted areas and activates de-wetting which interrupts transformation towards corrosion. Role of droplet coalescence in evolution of corroded areas is addressed. Combining two Monte Carlo models varied with droplet relaxation helps to predict the corroded areas' distribution after long-term exposure.

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暴露在盐水污染润滑油中的 8Cr4Mo4V 轴承钢的润湿区和腐蚀区的演变情况

通过蒙特卡洛模拟和腐蚀实验，探讨了 8Cr4Mo4V 轴承钢在暴露于盐水污染的润滑油中时，润湿区和腐蚀区之间的关系。结果表明，由于液滴凝聚，局部腐蚀区域最初是分散的，然后连接起来，最终合并，分别是电化学腐蚀、均匀腐蚀和丝状腐蚀的结果。液滴凝聚还重新分配了润湿区域并激活了去湿，从而中断了向腐蚀的转化。本文探讨了液滴凝聚在腐蚀区域演变过程中的作用。结合两种与液滴松弛不同的蒙特卡洛模型，有助于预测长期暴露后腐蚀区域的分布。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.