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Characterization of Hydroxyapatite Coated Mg for Biomedical Applications

Published online by Cambridge University Press:  01 June 2018

Jiajia Lin
Affiliation:
Materials Science & Engineering Program, University of California, Riverside CA92521USA
Qiaomu Tian
Affiliation:
Department of Bioengineering, University of California, Riverside CA92521USA
Arash Aslani
Affiliation:
N2 Biomedical LLC, One Patriots Park, Bedford, MA01730, USA
Huinan Liu
Affiliation:
Materials Science & Engineering Program, University of California, Riverside CA92521USA Department of Bioengineering, University of California, Riverside CA92521USA Biomedical Sciences Program, School of Medicine, University of California, Riverside CA92521USA
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Abstract:

Magnesium (Mg) and its alloys have showed a promising potential for medical implant applications due to their attractive biocompatibility and mechanical strength. Despite these promising properties, the critical challenge with Mg-based implants is rapid degradation in physiological environment that results in early loss of mechanical strength and hydrogen gas accumulation at the local site. Hydroxyapatite (HA) coatings provide a sound solution for controlling Mg degradation at the bone interface. In this paper, HA coatings with different particle sizes, namely, microHA (mHA) and nanoHA (nHA), were deposited on Mg plates and rods with two different pressures using N2 Biomedical’s proprietary deposition process called IonTiteTM. Surface characterization of the deposited layers showed mHA coated Mg prepared at high pressure had more homogeneous HA particles distribution with less defects.

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Copyright © Materials Research Society 2018 

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