LASER-SURFACE PROCESSING IN THE ULTRA-VIOLET FOR TRIBOLOGICAL APPLICATIONS IN METALS AND CERAMICS

Surface modification using ion beams and infrared laser light has prov en to be of benefit to tribological systems in a number of application s. We will describe the use of excimer laser light in the ultraviolet for surface alloying of metal and ceramic systems with excellent tribo logical results. Specifically, we have observed reduced friction in dr y sliding conditions and a change in wear processes resulting in great ly reduced surface damage. We interpret these results in light of chan ges in the microstructural, mechanical, and tribochemical properties o f the surface