Quantifying Hydrogen Concentrations and their Influence on Surface-Initiated Damage in Rolling/Sliding Contacts of 100 Cr6 Bearing Steel

IF 2.9 3区工程技术 Q2 ENGINEERING, CHEMICAL

Tribology Letters Pub Date : 2025-05-13 DOI:10.1007/s11249-025-02004-0

Lisa-Marie Weniger, Kinza Jamil, Birhan Sefer, Leonardo Pelcastre, Pia Åkerfeldt, Claes-Olof A. Olsson, Jens Hardell

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Abstract

This work investigates the quantitative effect of the hydrogen concentration of 100Cr6 bearing steel on the surface-initiated damage induced during lubricated rolling/sliding tribotesting. Hydrogen was introduced to the samples prior to tribotesting by electrochemical pre-charging, and hydrogen concentration was measured using thermal desorption analysis. The surface-initiated damage was quantified by optical profilometry and scanning electron microscopy. An upper limit for the critical hydrogen concentration was determined to be 1.4–2 wppm diffusible hydrogen. At this concentration, the area fraction covered by damage features was found to double compared to uncharged samples. As both charged and uncharged samples exhibited the same type of surface damage (early-stage micropitting), it was concluded that hydrogen did not change the wear mechanism but decreased the number of contact cycles necessary for the initiation of surface defects.

Graphical Abstract

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氢浓度定量及其对100cr6轴承钢滚动/滑动接触表面损伤的影响

本文研究了100Cr6轴承钢中氢浓度对润滑滚动/滑动摩擦试验中表面损伤的定量影响。在电化学预充电摩擦测试之前，将氢气引入样品中，并使用热脱附分析测量氢气浓度。采用光学轮廓术和扫描电镜对表面损伤进行了定量分析。可扩散氢的临界浓度上限为1.4-2 wppm。在此浓度下，发现与未带电样品相比，损伤特征所覆盖的面积分数增加了一倍。由于带电和未带电样品都表现出相同类型的表面损伤（早期微点蚀），因此可以得出结论，氢并没有改变磨损机制，而是减少了表面缺陷产生所需的接触循环次数。图形抽象

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

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.