Tribological performance of Mn-3(PO4)(2) coating and PC/MoS2 coating in Rolling-Sliding and pure sliding contacts with gear oil

摘要

The tribological performance of Mn.P coating and PC/MoS2 coating was investigated and compared with that of the reference steel (AISI52100) with different surface roughness. A mini traction machine and SRV tribometer were used to measure the COF under rolling-sliding and pure sliding conditions. Mn.P and PC/MoS2 exhibited a significant antifriction effect. The COF of the coated samples were less affected by the change in slide-to-roll ratio than that of the uncoated samples. As the wear time was prolonged, the running performance of the Mn.P coating improved relative to that of PC/MoS2. The effects of roughness, rolling speed and contact loads of coatings on wear mechanisms were discussed. Only one of the contact pairs treated with Mn.P coating showed improved tribological behaviour.