Enhanced Antiwear Property of Cu-Sn-Bi Bimetal Composites with TiB₂under Different Working Conditions

Tribological performances of CuSn10Bi3 alloy containing MoSi2 and ferrophosphorus under starved lubrication

“…When the asperities on the mate ring squeezed the alloy, shearing or dislocation occurs between the grains of copper alloy. At this time, the sharp grain boundary edges invade each other, which will inevitably reduce the strength of the alloy material, and make it easier to fail [10]. The other three alloys with MoSi 2 /Fe m P n particles have finer grains and smoother grain boundary edges.…”

“…Although the tribological performances of low melting point bismuth as the substitute phase of soft phase lead is the same or even slightly better than that of traditional copper-tin lead materials, the brittle and poor ductility of metal bismuth has always been an inevitable disadvantage [8,9]. Especially under the extreme working conditions of poor lubrication, the friction surface of copper-tin-bismuth alloy is more prone to brittle fracture so copper-tin bismuth alloy is subjected to more severe wear [10].…”