Interface fracture behavior of electroplated coating on metal substrate under compressive strain
✍ Scribed by Kai Zhang; Kun Zhang; Huai Xue Li; Guang Nan Chen
- Book ID
- 104023282
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 620 KB
- Volume
- 209
- Category
- Article
- ISSN
- 0924-0136
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✦ Synopsis
The inducement of interface fracture is crucial to the analysis of interfacial adhesion between coating and substrate. For electroplated coating/metal substrate adhering materials with strong adhesion, interface cracking and coating spalling are difficult to be induced by conventional methods. In this paper an improved bending test named as T-bend test was conducted on a model coating system, i.e. electroplated chromium on a steel substrate.
After the test, cross-sections of the coated materials were prepared to compare the failure behaviors under tensile strain and compressive strain induced by T-bend test. And the observation results show that coating cracking, interface cracking and partial spalling appear step by step. Based on experimental results, a new method may be proposed to rank the coated materials with strong interfacial adhesion.