Lubricant performance against white etching areas (WEAs) formation in AISI 52100 bearing steel under cyclic compressive loading

被引：7
作者：
Linto, D. [1 ]
Ramkumar, P. [1 ]
机构：
[1] Indian Inst Technol Madras, Dept Mech Engn, Machine Design Sect, Adv Tribol Res Lab ATRL, Chennai, India
来源：
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY | 2023年 / 237卷 / 04期
关键词：
Bearing steel; cyclic compressive loading; free radicals; lubricant degradation; white etching areas; ROLLING-CONTACT FATIGUE; MICROSTRUCTURAL CHANGES; CRACKS; MECHANISM; INITIATION; SYSTEM; OIL;
D O I：
10.1177/13506501221144699
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Premature bearing failures commonly occur in applications that operate under extreme boundary conditions. The lubrication engineers and tribologists are confronting a key challenge in these bearing failures associated with microstructure decay, such as White Etching Cracks (WECs) and White Etching Areas (WEAs). Lubricant degradation is one of the critical factors for the subsurface decay in the bearing steel. This work evaluates the performance of mineral oil (heavy paraffin oil) and synthetic poly alkyl glycol (PAG) against WEAs formation under pure sliding with cyclic compressive loading. The performance of lubricants was evaluated using Infrared Fourier Transform (FTIR) and Electron Spin Resonance (ESR) spectroscopy. The outcomes reveal that the free radical formation rate is higher for paraffin than PAG. This study found that WEAs formation in the bearing steel is delayed in the PAG tested samples compared to paraffin.
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页码：1012 / 1024
页数：13
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