In this study, the decomposition of a multialkylated cyclopentane (MAC) and a perfluoro‐poly‐ether (PFPE) lubricant was investigated in a ball‐on‐disc sliding test under vacuum and in a rolling contact fatigue (RCF) test on full bearings. In situ mass spectrometry was conducted to study the tribochemical formation of hydrogen in a steel‐on‐steel ball‐on‐disc sliding contact. Further investigations on lubricant degradation in rolling‐sliding contact indicated fragmentation and oxidation reaction of the MAC oil by interaction with the oxide layer and the nascent bearing steel.Finite element method (FEM) analysis was carried out to model the contact in the ball‐on‐disc experiments and to extract contact surface temperature fields.

中文翻译：

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真空稳定润滑剂的摩擦化学降解：在真空圆盘试验和全轴承试验中多烷基化环戊烷和全氟聚醚之间的比较研究

在这项研究中，在真空下的圆盘滑动试验和全轴承滚动接触疲劳（RCF）试验中研究了多烷基化环戊烷（MAC）和全氟聚醚（PFPE）润滑剂的分解。 。进行了原位质谱研究，以研究钢对钢球对盘滑动接触中氢的摩擦化学形成。滚动滑动接触中润滑剂降解的进一步研究表明，MAC油由于与氧化物层和新生轴承钢相互作用而碎裂和氧化反应。进行了有限元方法（FEM）分析以模拟球形接触光盘实验并提取接触表面温度场。