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Hardening of Nickel Alloys by Ion Implantation of Titanium and Carbon

Published online by Cambridge University Press:  15 February 2011

S. M. Myers ,
D. M. Follstaedt ,
J. A. Knapp  and
T. R. Christenson
S. M. Myers
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185–1056, [email protected]
D. M. Follstaedt
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185–1056, [email protected]
J. A. Knapp
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185–1056, [email protected]
T. R. Christenson
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185–1056, [email protected]
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Abstract

Dual ion implantation of titanium and carbon was shown to produce an amorphous surface layer in annealed bulk nickel, in electroformed Ni, and in electroformed Ni7 5Fe 2 5. Diamond-tip nanoindentation coupled with finite-element modeling quantified the elastic and plastic mechanical properties of the implanted region. The amorphized matrix, with a thickness of about 100 nm, has a yield stress of approximately 6 GP and an intrinsic hardness near 16 GPa, exceeding by an order of magnitude the corresponding values for annealed bulk Ni. Implications for micro-electromechanical systems are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 444: Symposium I – Materials for Mechanical and Optical Microsystems , 1996 , 99
Copyright
Copyright © Materials Research Society 1997

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