Surface modification of magnesium alloy implants by nanostructured bredigite coating

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• 作者：Mehdi Razavi ; Mohammadhossein Fathi ; Omid Savabi ; Seyed Mohammad Razavi ; Batoul Hashemi Beni ; Daryoosh Vashaee ; Lobat Tayebi
• 关键词：Biomaterials ; Bioceramics ; Corrosion
• 刊名：Materials Letters
• 出版年：15 December, 2013
• 年：2013
• 卷：113
• 期：Complete
• 页码：174-178
• 全文大小：1147 K

文摘

Magnesium and its alloys have been recently investigated as biodegradable metallic biomaterials for bone implants. However, rapid corrosion rate and low bioactivity have been two limiting factors for their biomedical applications. In this work we aimed to improve these two properties for AZ91 magnesium alloy using the nanostructured bredigite (Ca₇MgSi₄O₁₆) coating made by micro-arc oxidation and electrophoretic deposition methods. The results indicated that this surface treatment enhanced both corrosion resistance and the bioactivity of AZ91 substrate, making it suitable for biomedical applications.