Fabrication and Microstructure of HA Containing Composite Coating on AZ91 Biomedical Magnesium by Plasma Electrolytic Oxidation

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Abstract:

Composite coating containing HA was fabricated on AZ91 biomedical magnesium alloy by plasma electrolytic oxidation in aluminate electrolyte with HA power in electrolyte. The microstructure of the coating including phase composition and surface morphology was investigated. The results showed that the coating consisted of MgO and MgAl2O4 and some HA. The whole coating surface was covered by many micro-pores but the surface are relatively uniform. The diameters of most pores were below 5um, and a few pores were bigger than 10 um.

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Key Engineering Materials (Volumes 575-576)

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229-232

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September 2013

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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