Methods to Investigate the Adhesion of Soft Nano-Coatings on Metal Substrates – Application to Polymer-Coated Stents
✍ Scribed by François Lewis; Diego Mantovani
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 427 KB
- Volume
- 294
- Category
- Article
- ISSN
- 1438-7492
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✦ Synopsis
Abstract
Soft coatings are widely used to tailor the surface chemistry of materials without altering their bulk properties. However, the strength of adhesion between the coating and the substrate must be high enough for long‐term applications. This has become a major challenge in the medical field, especially for polymer‐coated stents, mainly due to several coating failures reported after mechanical expansion during clinical implantation. In this work, the applicability of current polymer‐metal adhesion tests to polymer‐coated stents is discussed. The small punch test was proposed as an adhesion test that allows fundamental studies on the adhesion and coating properties. This adhesion test was applied to thin fluorocarbon coatings deposited by plasma on 316L stainless steel.
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