SEDL / STP / STP1278-EB / STP16105S

Coating-Substrate Interface Stress Management in Wear Protection of Light Alloy Components

Ramalingam, S
Professor and graduate research assistant, University of Minnesota, Minneapolis, MN

Zheng, L
Professor and graduate research assistant, University of Minnesota, Minneapolis, MN

Pages: 18    Published: Jan 1996

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Abstract

Hard coating light alloys for wear protection presents an interface stress problem due to mismatch in elastic constants across the film-substrate interface. The displacement formulation method is used in this work to calculate interface stresses as a function of contact parameters, coating/substrate properties, and coating thickness. Quantitative results obtained suggests that interface stresses can be managed with a judicious choice of coating materials, film thickness, contact parameters, and film deposition conditions.