Abstract
To improve the tribological performance of CSS-42L bearing steel, smooth surfaces (SSs), groove-textured surfaces (GSs), GSs with Sn-Ag-Cu (GSs-SAC), and GSs with Sn-Ag-Cu-Ti3C2 (GSs-SACT) were prepared on CSS-42L. In addition, experimental studies were conducted on tribological properties. The obtained results indicated that GSs-SACT exhibited the best anti-friction and noise reduction performances. These remarkable tribological performances were attributed to the synergistic effects of grooves, Sn-Ag-Cu, and MXene-Ti3C2. The inconsistent rules of frictional forces were improved by the grooves and SACT, which inhibit the friction-induced noise. The micro-nano size-effects of MXene-Ti3C2 enhanced the repairing effect and anti-friction property of composite lubricants, which improved the profile characteristics of GSs-SACT.
Highlights
As the core component of equipment, bearings determine reliability and the performances of bearing steels are the key factors that ensure the durability of bearings
The results obtained from this study demonstrated that MXene–Ti3C2 suppressed the adhesion wear at the interface and improved the tribological properties, and creep resistance of composites
Compared to smooth surfaces (SSs), the average friction coefficients decreased by 3.8% (GSs), 13.1% (GSs–SAC), and 35.7% (GSs–SACT)
Summary
As the core component of equipment, bearings determine reliability and the performances of bearing steels are the key factors that ensure the durability of bearings. Investigations on the tribological properties of CSS-42L are of great engineering significance and crucial for improving the working performance of high-end equipment bearings [1,2,3]. The results obtained from this study demonstrated that MXene–Ti3C2 suppressed the adhesion wear at the interface and improved the tribological properties, and creep resistance of composites. The obtained results showed that during the sliding process, the graphitized Ti3C2 coatings reduced the direct contact between the sliding surfaces, thereby inhibiting the production and adhesion of wear debris on the worn surfaces. Rosenkranz et al [12] prepared MXene coatings on stainless steel (AISI 304) and performed the ball–disc friction experiments.
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