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Growth and corrosion behaviour of amorphous micrometre scale calcium phosphate coatings on magnesium substrates
Journal article   Open access   Peer reviewed

Growth and corrosion behaviour of amorphous micrometre scale calcium phosphate coatings on magnesium substrates

D. Fawcett, S. Brundavanam and G.E.J. Poinern
International Journal of Materials Engineering, Vol.5(1), pp.10-16
2015
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Abstract

Amorphous calcium phosphate (ACP) coatings were formed on magnesium substrates via a straightforward electrochemical technique in order to improve the corrosion resistance of the substrates. X-ray diffraction spectroscopy and microscopy techniques were used to investigate the size, morphology, composition and structure of the ACP coatings. Analysis of the ACP coatings revealed the presence of micrometre scale fissures and tubular structures. Despite the presence of these features, the coatings were still capable of significantly reducing the corrosion rate in both PBS and Ringer’s solutions. Ringer’s solution was found to be the most aggressive towards Mg substrates with a corrosion rate of 3.828 mm/yr. However, after electrochemical treatment, the corrosion rate of substrates coated with ACP was reduced to 0.557 mm/yr. The significant improvement in corrosion resistance is a first step in controlling the corrosion rate of biodegradable Mg substrates for potential use in hard tissue applications.

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Collaboration types
Domestic collaboration
Citation topics
2 Chemistry
2.165 Nanofibers, Scaffolds & Fabrication
2.165.1082 Calcium Carbonate Crystallization
Web Of Science research areas
Energy & Fuels
Engineering, Chemical
ESI research areas
Engineering
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