SURFACE MECHANICAL-PROPERTIES - EFFECTS OF ION-IMPLANTATION

Ion implantation has been used to modify the mechanical properties of a wide range of metals and alloys. The affected properties which have been studied include friction and wear, erosion and fatigue. Both bcc and fcc systems have been examined, with the major effort being directed at the former, due to the strong influence of interstitial implantants on mechanical properties of bcc and because of the industrial utility of these alloys. The interaction of surface dislocation structures with implantation-induced imperfections, surface alloying, and precipitation phenomena are discussed. A review is given of the current status of activities as represented by a number of research groups.