“…Ion implantation has been developed for materials surface modification for three decades [1,2]. The treatment has been widely applied to improvement of lifetime of industrial tools, particularly those tempered at higher temperatures, precision required, highly polished, refurbishment possible and easy, and expensive [3]. Since the ion beam research laboratory at Chiang Mai University was established about ten years ago [4], it has been emphatically foeusing its service to local industries with its developed ion beam technology.…”