The Corrosion Performance and Post-corrosion Wear Mechanisms of Fully Formulated Lubricants Introduced Varying Hydrogen

IF 2.9 3区工程技术 Q2 ENGINEERING, CHEMICAL Tribology Letters Pub Date : 2025-03-17 DOI:10.1007/s11249-025-01982-5

Xinbo Wang, Lili Jin, Hao Zhang, Ruifeng Xu, Yansong Liu, Oleksandr Stelmakh, Baigang Sun

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Abstract

Hydrogen internal combustion engines are transitional power devices for cleaner and low-carbon energy in transportation. However, high-temperature engine lubricants are prone to contact with hydrogen and oxygen, flowing through metal components during operation. The corrosive properties of the lubricants containing these gases and their tribological performance after prolonged contact with gases and engine metal parts have yet to be studied. This paper investigates the corrosive properties of fully formulated lubricants contacted with steel and metal coupons with air and varying flow rates of hydrogen introduced, as well as the tribological performance of the post-corrosion lubricants. The results show that as the hydrogen flow rate increases from 0 to 12 lph, the weight loss rates of copper and lead coupons decrease by 74.4% and 79.7%. Energy-dispersive spectroscopy and gas chromatography–mass spectrometry confirmed the reduction in oxygen content on the metal surfaces and the degradation of additives such as diphenylamine by hydrogen during corrosion. Compared to those without hydrogen, the friction coefficients of the lubricants after exposure to metal and steel coupons and 12 lph of hydrogen decreased by 50.4% and 46.6%. This significant improvement in lubrication performance is attributed to the reduced degradation of ZDDP and the formation of more zinc phosphate and zinc sulfide during friction in the hydrogen-introduced post-corrosion lubricants, compared to post-corrosion lubricants without hydrogen exposure. The research of corrosive and tribological performance characteristics can be applied to enhance the design of reliable engine tribo-pairs and improve the lubrication requirements of engine oil in hydrogen environments.

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来源期刊

Tribology Letters 工程技术-工程：化工

CiteScore

5.30

自引率

9.40%

发文量

116

审稿时长

2.5 months

期刊介绍： Tribology Letters is devoted to the development of the science of tribology and its applications, particularly focusing on publishing high-quality papers at the forefront of tribological science and that address the fundamentals of friction, lubrication, wear, or adhesion. The journal facilitates communication and exchange of seminal ideas among thousands of practitioners who are engaged worldwide in the pursuit of tribology-based science and technology.