Abstract
Oil-lubricated friction and wear properties of various copper-base sintered materials containing graphite were studied. Under dry condition, an addition of graphite is effective in reducing friction, transfer and wear. However, a combination of graphite with lubricating oil was not only ineffective, but in some cases brought about catastrophic wear. Under a severe condition, where the seizure may occur by an increase in temperature at the rubbing surface and failure of the oil film, a bronze-base composite with 10wt% graphite exhibited a somewhat preferable performance. The rubbed surfaces were not covered with a continuous graphite film after both dry and oil-lubricated tests.
