| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 614449 | Tribology International | 2015 | 9 Pages |
•Sn-based overlay plated bearing materials were studied in mixed and boundary regime.•When speed is varied, transition in friction was similar for Sn and Pb-based overlay.•Sn and Pb-based overlays exhibited comparable friction and wear in boundary regime.•Adhesive wear and abrasive wear were main wear mechanisms in Sn-based overlay.
A block-on-ring test setup is employed to investigate tribological performance of Sn-based overlay plated bearing materials under mixed and boundary lubrication condition. Pb-containing bearing material is also studied as a reference. Sn-based and Pb-based overlays have shown similar transition in friction when rotational speed is varied. Under relatively longer test duration, Sn-based overlays exhibit comparable friction and wear properties with that of Pb-based overlay. It takes longer time to obtain steady-state friction for Sn-based overlay than Pb-based overlay. Wear behavior of tested samples are also similar except for tests in the mixed lubrication regime where Sn-based overlays show better wear resistance. In the Sn-based overlays main wear mechanisms are adhesive and abrasive wear leading to exposure of the Ni interlayer.
