abrasion) are associated with the micro-cutting action of
abrasive particles which are dragged through contact with
the ball, remaining essentially fixed to the ball surface
during the process, and the smooth surface (rolling abrasion
or three-body abrasion) is formed by the action of many
particles rolling through the contact zone. Also, Bose and
Wood [11] affirmed that significant grooving and scratch
marks can be caused by wear debris activity, thus, becoming
embedded in the ball.