A Special Method to Evaluate the Strong Adhesion between Brittle Coating and Ductile Substrate
| Periodical | Key Engineering Materials (Volumes 353 - 358) |
|---|---|
| Main Theme | Progresses in Fracture and Strength of Materials and Structures |
| Edited by | Yu Zhou, Shan-Tung Tu and Xishan Xie |
| Pages | 1749-1752 |
| DOI | 10.4028/www.scientific.net/KEM.353-358.1749 |
| Citation | Kun Zhang et al., 2007, Key Engineering Materials, 353-358, 1749 |
| Online since | September, 2007 |
| Authors | Kun Zhang, Qing Peng, Guang Nan Chen |
| Keywords | Cross-Sectional Indentation, Evaluation, Interfacial Adhesion |
| Price | US$ 28,- |
The evaluation of the interfacial adhesion of coating system has always been a rough task. In this paper, a special testing method of cross-sectional indentation is applied on a model coating system, i.e. electroplated chromium on a steel substrate which is generally regarded as an example of materials pair with strong adhesion. Based on fractography analysis with SEM and interfacial stress simulation with FEM, it is found that interfacial shear stress may induce coating spalling. More interestingly, spalling location is sensitive to substrate pretreatment process. This shows the feasibility of cross-sectional indentation to distinguish interfacial strength at a high level.