Controlled degradation of a magnesium alloy in simulated body fluid using hydrofluoric acid treatment followed by polyacrylonitrile coating

详细信息    查看全文

• 作者：Thiago F. da Concei??o ; Nico Scharnagl ; Wolfgang Dietzel ; Karl U. Kainer
• 关键词：A. Magnesium ; B. EIS ; C. Polymer coatings
• 刊名：Corrosion Science
• 出版年：2012
• 出版时间：September, 2012
• 年：2012
• 卷：62
• 期：Complete
• 页码：83-89
• 全文大小：651 K

文摘

This paper describes the protection mechanism of polyacrylonitrile coatings on a hydrofluoric acid treated magnesium alloy. The protective performance of the adopted methodology was investigated by electrochemical impedance spectroscopy and immersion tests in 3.5 wt. % NaCl and in simulated body fluid (SBF). It was observed that interfacial reactions and interactions between polymer and substrate rendered long-term protection for the metal. A detailed characterization of the coating properties and of the interfacial processes is provided and the potential of the adopted methodology for biomedical application is discussed.