Filling Cu or CuO powder has changed the wear mechanism of rubbing pairs of UHMWPE-steel. When pure UHMWPE pairs up with steel,adhesive wear takes place.

• 填料的加入改变了UHMWPE与钢配副时的磨损机理，纯UHMWPE与钢配副时的磨损机理是粘着磨损，加入填料后变为粘着磨损与磨料磨损共存的状态，而且随着填料含量的增加，磨料磨损所占的比重上升。