A Novel Biodegradable Phosphate Coating on AZ31B Alloy

Ting Ting Yan; Si Yu Wu; Qing Hua Chen; Qing Mei Liu; Jia Rong Yang

doi:10.4028/www.scientific.net/AMM.707.158

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Antioxidant Properties of Microalgae Protein Hydrolysates Prepared by Neutral Protease Digestion
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Research of Preparation and Properties of CaSO₄/HAw Bone Graft Substitute
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A Novel Biodegradable Phosphate Coating on AZ31B Alloy
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Biodegradability of AZ31B Magnesium Alloy with a Permanganate Conversion Coating
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 707A Novel Biodegradable Phosphate Coating on AZ31B...

A Novel Biodegradable Phosphate Coating on AZ31B Alloy

Abstract:

Mg and its alloys draw more and more attentions to be used as biodegradable medical materials. But the rapid degradation of those materials limits their clinical applications. In this article, a phosphate coating was prepared on AZ31B magnesium alloy to improve its anti-corrosion property. Morphology, composition and corrosion resistance of the coating were studied. The SEM research showed that the coating that composed of rod-like phosphates with small amount of random distributed micro-voids was approximately10-20μm in thickness. The XRD analysis indicated that the coating was mainly composed of MgO, Mg₃(PO₄)₂and Zn₃(PO₄)₂·xH₂O. Electrochemical test showed the phosphate treatment could significant improve the corrosion resistance of AZ31B.