A Study of Stress Distribution in Layered and Gradient Tribological Coatings (Preprint)
UNIVERSAL TECHNOLOGY CORP DAYTON OH
Pagination or Media Count:
A numerical model was used to determine the stress distribution in layered and gradient coatings. A parametric study was performed to investigate the effect of various critical parameters such as thickness, composition, applied load, material properties, and interfacial friction on the stress distribution in the layered and gradient coatings and the 440C steel substrate. Layered and gradient TiTiC coatings consisted of a titanium bond layer and titanium carbide TiC gradient layers. The Ti sub 1-x C sub x gradient coatings 0 or x or 1 were assumed as a series of perfectly bonded layers with unique material properties and layer thickness. The importance of the material, geometrical and mechanical effects on the magnitude and location of peak stresses were investigated. The results of this study can be used to optimize layered and gradient coating composition and thickness for the best tribological performance at specified contact loading conditions.
- Coatings, Colorants and Finishes