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Friction and Wear Reduction of 440C Stainless Steel by Ion Implantation*

Published online by Cambridge University Press:  25 February 2011

L. E. Pope ,
F. G. Yost ,
D. M. Follstaedt ,
S.T. Picraux  and
J. A. Knapp
L. E. Pope
Affiliation:
Sandia National Laboratories, P. O. Box 5800, Albuquerque, New Mexico 87185, U.S.A.
F. G. Yost
Affiliation:
Sandia National Laboratories, P. O. Box 5800, Albuquerque, New Mexico 87185, U.S.A.
D. M. Follstaedt
Affiliation:
Sandia National Laboratories, P. O. Box 5800, Albuquerque, New Mexico 87185, U.S.A.
S.T. Picraux
Affiliation:
Sandia National Laboratories, P. O. Box 5800, Albuquerque, New Mexico 87185, U.S.A.
J. A. Knapp
Affiliation:
Sandia National Laboratories, P. O. Box 5800, Albuquerque, New Mexico 87185, U.S.A.
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Abstract

Friction and wear tests on ion-implanted 440C stainless steel discs have been extended to high Hertzian stresses (≤ 3150 MPa). Implantation of 2 × 1015 Ti/mm2 (180–90 keV) and 2 × 1015 C/mm2 (30 keV) into 440C reduces friction (∼40%) and wear (> 80%) for Hertzian stresses as large as 2900 MPa, stresses which significantly exceed the yield strength of 440C (∼1840 MPa). Implantation of 4 × 1015 N/mm2 (50 keV) into 440C reduces friction slightly (∼25%) for Hertzian stresses > 1840 MPa but provides little or no reduction in wear. The amount of Ti remaining in the wear tracks correlates with the reductions in friction and wear. The implantation of Ti and C produces an amorphous surface layer which is believed to reduce friction and wear, whereas N implantation is expected to produce hard nitride particles which probably do not modify the hardness of 440C (KHN = 789) significantly.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 27: Symposium E – Ion Implantation and Ion Beam Processing of Materials , 1983 , 661
Copyright
Copyright © Materials Research Society 1984

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Footnotes

*

This work was supported by the U. S. Department of Energy (DOE) under Contract Number DE-AC04-76-DP00789.

References

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