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Investigation of Tribological and Mechanical Performances of Ti‐based Self‐Lubricating Composites Containing SnAgCu and Al 2 O 3
Author(s) -
Yang Kang,
Ma Yuhao,
Ma Hongru,
Zhang Feizhi,
Li Ruifang
Publication year - 2021
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.202001279
Subject(s) - materials science , tribometer , tribology , spark plasma sintering , lubrication , friction coefficient , composite material , wear resistance , coefficient of friction , metallurgy , sintering
Friction and wear behaviors of Ti alloys are vital to their applications in aerospace components and ocean devices. The spherical SnAgCu–Al 2 O 3 (S–SA) are synthesized via spark plasma sintering (SPS) to prepare the Ti–S–SA for achieving excellent lubrication. On a ball‐on‐flat tribometer, Ti–S–SA exhibits the best friction and wear performance among the samples prepared by SPS. Approximately 12.0 wt% of Al 2 O 3 is coated with 15.0 wt% SnAgCu to form a SnAgCu‐enriched film, resulting in the reduction of binding ability of the Al 2 O 3 with the surface material. The rotation of Al 2 O 3 particles improved as SnAgCu deformed under a low load. Subsequently, the friction resistance reduces, and a low material loss is observed from the friction surface; these phenomena facilitate excellent tribological behavior. Under coordinating functions of 12.0 wt% Al 2 O 3 and 15.0 wt% SnAgCu, Ti–S–SA shows a friction coefficient of 0.20 and the wear rate of ≈3.39 × 10 −4 mm 3 N −1 m −1 .