抄録
The effect of the amount of Sn and Si contents on the wear resistance in the aluminum bearing alloys containing high tin content was investigated. The friction coefficient and abrasive loss of the as-cast aluminum alloys were measured against commercial stainless steel (SUS304) in the boundary lubrication. It was found that Al-11.8%Sn-4.6%Si-1.1%Cu alloy and Al-15.9%Sn-4.5%Si-1%Cu alloy had low friction coefficient and better wear resistance with contact pressure in the range from 0.2 to 0.4MPa, whereas friction coefficient and abrasive loss increased with increasing contact pressure, beyond 0.45MPa. Grey white phase (containing Sn and Si content) was formed on the worn surface in the Al-11.8%Sn-4.6%Si-1.1%Cu alloy and the formation of this phase had resulted in better wear resistance of aluminum bearing alloys containing high tin content in the boundary lubrication.
