重载盐水污染润滑油中轴承钢滚动接触疲劳与腐蚀耦合机理

IF 4.4 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis Pub Date : 2025-04-10 DOI:10.1016/j.engfailanal.2025.109596

Zhuofan Xia , Youzhi Wang , Di Wu , Xiaochen Zhang , Yifeng Li , Long Hao , Jianqiu Wang , En-Hou Han

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引用次数: 0

摘要

结合损伤行为表征和电化学阻抗光谱，系统研究了轴承钢在盐水污染的润滑油中滚动接触疲劳（RCF）和腐蚀的相互作用机理。结果比较了轴承钢在两种不同润滑油中的滚动接触腐蚀疲劳损伤行为和寿命。轴承钢在受到盐水污染的润滑油中的滚动接触疲劳寿命会缩短。然而，盐水污染润滑油对疲劳寿命影响的大小取决于盐水和润滑油的溶解状态。在水溶性润滑油中，盐水和氯离子会均匀地分散在润滑油中，在接触表面造成大量的深点腐蚀。轴承钢表面会形成密集的腐蚀坑和小尺寸的剥落坑，导致振动失效。在不溶于水的润滑油中，含氯离子的盐水只是以液滴形式分散在润滑油中，在接触表面形成浅层均匀腐蚀。轴承钢的主要失效机理表现为滚动接触疲劳。因此，建议在为重载和腐蚀环境下的轴承钢选择润滑油时，应同时考虑高粘度和不溶于水的润滑油。

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Coupling mechanism of rolling contact fatigue and corrosion on bearing steel in brine contaminated lubricant oil under heavy load

The interaction mechanism of rolling contact fatigue (RCF) and corrosion on bearing steel in salt water contaminated lubricating oil is systematically studied in combination with characterization of damage behavior and electrochemical impedance spectroscopy. The results compared the rolling contact corrosion fatigue damage behavior and life of bearing steel in two different lubricating oils. The rolling contact fatigue life of bearing steel will reduce after salt water contaminated lubricating oil. However, the magnitude of the effect of salt water contaminated lubricating oil on fatigue life is determined by the dissolved state of salt water and lubricating oil. In water soluble lubricating oil, salt water and chloride ions can be evenly dispersed in the lubricating oil causing a large number of deep pitting corrosion on contact surface. The bearing steel surface will form dense corrosive pits and small-size spalling pit, resulting in failure of vibration. In water insoluble lubricating oil, salt water containing chloride ions are just dispersed as droplets in the lubricating oil to form shallow uniform corrosion on the contact surface. The predominant failure mechanism in bearing steel manifests as rolling contact fatigue. Therefore, it is suggested that the high viscosity and water insoluble lubricant should be considered at the same time when selecting the lubricating oil for the bearing steel under heavy load and corrosive environment.

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来源期刊

Engineering Failure Analysis 工程技术-材料科学：表征与测试

CiteScore

7.70

自引率

20.00%

发文量

956

审稿时长

47 days

期刊介绍： Engineering Failure Analysis publishes research papers describing the analysis of engineering failures and related studies. Papers relating to the structure, properties and behaviour of engineering materials are encouraged, particularly those which also involve the detailed application of materials parameters to problems in engineering structures, components and design. In addition to the area of materials engineering, the interacting fields of mechanical, manufacturing, aeronautical, civil, chemical, corrosion and design engineering are considered relevant. Activity should be directed at analysing engineering failures and carrying out research to help reduce the incidences of failures and to extend the operating horizons of engineering materials. Emphasis is placed on the mechanical properties of materials and their behaviour when influenced by structure, process and environment. Metallic, polymeric, ceramic and natural materials are all included and the application of these materials to real engineering situations should be emphasised. The use of a case-study based approach is also encouraged. Engineering Failure Analysis provides essential reference material and critical feedback into the design process thereby contributing to the prevention of engineering failures in the future. All submissions will be subject to peer review from leading experts in the field.