Friction and wear properties of ion-implanted polymers
(Department of Materials Science and Engineering,Nanjing University of Science and Technology, Nanjing 210094, China)
Abstract: PA6, PA1010 and UHMMPE were implanted with 450keV N+ ion in doses of 5×10 14, 2.5×10 15 and 1.25×10 16/cm2. The friction and wear behaviors of ion-implanted and un-implanted polymers rubbing with two ceramic （ZrO2 and Si3N4） balls were studied using a ball-on-disk tribometer under dry friction. The results show that the friction coefficients and wear resistance of low dose implanted polymers are higher than those of un-implanted ones. The friction coefficient of polymers implanted with high dose is lower than that of samples with low dose. The wear resistant of polymers can be improved by ion implantation. The wear losses of implanted polymers decrease with the increase of implanted dose. The adhesive, plastic deformation and fatigue are wear mechanisms for un-implanted polymers and abrasive wear for implanted ones.
Key words: nylon； ion-implanted； ceramic； tribological properties