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Friction Characteristics of B+- and N2+-Implanted Fe-Cr Alloys.

Published online by Cambridge University Press:  28 February 2011

Jun Sasaki  and
Masaya Iwaki
Jun Sasaki
Affiliation:
Nippon Steel Corp., 10-1 Fuchinobe 5-chome, Sagamihara-shi, Kanagawa 229, JAPAN
Masaya Iwaki
Affiliation:
RIKEN, Wako, Saitama 351-01, JAPAN
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Abstract

A study has been made on friction and hardness of boron and nitrogen ion implanted Fe-Cr alloys. Ion implantation has been carried out with doses ranging from 5 wt% up to 20 wt% at energies of 50, 100 and 150 keV at room temperature. Reciprocal traces for friction coefficient measurements were performed by using a Bowden-Leben tester at a low speed without lubricant. Hardness was measured by using a micro-Vickers tester at a load of 2gf. Hardness of the specimen increases after the implantation with either of ion species. Friction measurements with reciprocal sliding show that a life-time of decreased friction coefficient depends on implanted ion species, Cr concentrations and acceleration energies. For B+- implantation, the lower the chromium contents are, the longer a decreased friction coefficient lasts. Meanwhile, the friction reduced by nitrogen implantation lasts longer for higher chromium content substrates. Dependence of friction coefficient on an acceleration energy is discussed for B+-implantation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 140: Symposium S – New Materials Approaches to Tribology: Theory and Applications , 1988 , 159
Copyright
Copyright © Materials Research Society 1989

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