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Surface Modification for Tribology with Pvd Processes: Problems and Prospects

Published online by Cambridge University Press:  28 February 2011

S. Ramalingam
S. Ramalingam*
Affiliation:
Department of Mechanical Engineering and The Productivity Center University of Minnesota, 111 Church Street S.E., Minneapolis, Minnesota 55455
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Abstract

The last two decades have seen substantial progress in the development of physical vapor deposition processes and in ion implantation technologies to modify the surface properties of engineering materials. Surface modification to engineer surfaces for tribological applications has become possible. Hard coatings are now in wide commercial use in tooling applications both to reduce wear and to extend the product life. However, the use of wear resistant coatings in engineered parts and components is yet to become significant. Some of the problems inhibiting wider use of surface modification in tribological applications are discussed in this paper. Recent developments in arc coating to overcome the discrete interface problem associated with low temperature PVD are described. It is shown that the creation of graded interfaces is now feasible. Results from a study involving the multi-layer deposition of titanium and nickel from a single, composite cathode are presented and discussed. It is shown that the prospects for increased use of surface modification to improve the characteristics of tribological components have been enhanced.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 140: Symposium S – New Materials Approaches to Tribology: Theory and Applications , 1988 , 465
Copyright
Copyright © Materials Research Society 1989

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