Unlubricated friction and wear of an ion beam mixed, nitrogen-implanted Fe50Ti50 surface alloy on AISI 304 stainless steel

Hirvonen, J-P.; Nastasi, M.; Mayer, J. W.
July 1987
Applied Physics Letters;7/27/1987, Vol. 51 Issue 4, p232
Academic Journal
Nitrogen implantation was observed to significantly improve the dry sliding properties of an ion beam mixed Fe50Ti50 surface alloy on AISI 304 stainless steel. Implantation to the fluence of 1.7×1017 N/cm2 at 50 keV increased the wear resistance but a decreased friction coefficient was obtained only after few hundred cycles at the beginning of the pin-on-disk test. When nitrogen was implanted to the fluence of 3×1017 N/cm2 an improved wear resistance and decreased friction were detected throughout the test of 1000 cycles. In addition, good sliding properties were also found at higher loads in the high fluence, nitrogen-implanted samples. These results differ from those obtained following a nitrogen implantation into Ti-implanted iron or iron-based alloys and are attributed to higher titanium and nitrogen concentrations.


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