Research on the Tribology Performance of Copper-Bismuth Bearing Material

Abstract

Copper-based bearing material containing Bi was prepared by running powder metallurgy process, the influence of the content of Bi on the tribological performance of copper-based bearing materials was inspected and Bi’s impact on frictional wear performance of copper-based bearing materials was studied by a MM-200 frictional wear tester. The research shows that, Bi, with a lower melting point, tends to melt and separate out, in friction process which may reduce shear strength of the friction pair surface and improve the performance of antifriction and adhesiveness resistance. When Bi content gets higher to produce more brittle phases, which will fall off directly from the matrix, the antifriction and antiwear of friction pair will weaken.

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

“…In recent decades, it has become the mainstream trend to add non-toxic and low melting point metal bismuth to copper-tin alloy as a soft phase instead of lead [6]. Some scholars have explored the influence of Bi content on the friction and wear properties of copper-based bearing materials [7]. The results show that Bi with a low melting point is easy to melt and separate in the friction process, which not only reduces the shear strength of the friction pair surface, but also improves the anti-wear and anti-adhesion properties.…”

Atomistic Simulations and Experimental Investigations of the Diffusion Behavior of Steel/ZCuPb20Sn5 Bimetals

“…There are many methods to fabricate copper/steel bimetals, such as explode welding [11], friction welding [12,13], laser welding [14,15], powder metallurgy [16][17][18], squeeze casting [19], induction cladding [20,21], and transient liquid phase [22][23][24]. In general, welding and induction cladding are used conventionally.…”