title: Hydroxyapatite coatings produced on commercially pure titanium by micro-arc oxidation.
abstract: A porous hydroxyapatite (HA) coating on commercially pure titanium was prepared by micro-arc oxidation (MAO) in electrolytic solution containing calcium acetate and beta-glycerol phosphate disodium salt pentahydrate (beta-GP). The thickness, phase, composition morphology and biocompatibility of the oxide coating were characterized by x-ray diffraction (XRD), electron probe microanalysis (EPMA), scanning electron microscopy (SEM) with an energy dispersive x-ray spectrometer (EDS) and cell culture. The thickness of the MAO film was about 20 microm, and the coating was porous and uneven without any apparent interface to the titanium substrates. The result of XRD showed that the porous coating was made up of HA film. The favorable osteoblast cell affinity gives HA film good biocompatibility. HA coatings are expected to have significant uses for medical applications such as dental implants and artificial bone joints.
authors.affiliation: College of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, People's Republic of China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Huang
authors.forename: Yingjun
authors.initials: Y
authors.lastname: Wang
authors.forename: Chengyun
authors.initials: C
authors.lastname: Ning
authors.forename: Kaihui
authors.initials: K
authors.lastname: Nan
authors.forename: Yong
authors.initials: Y
authors.lastname: Han
mesh_terms: D016475:3T3 Cells; D000818:Animals; D018786:Bone Substitutes / Q000737:chemistry*; D002448:Cell Adhesion / Q000502:physiology; D002470:Cell Survival / Q000502:physiology*; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D017886:Durapatite / Q000737:chemistry*; D005740:Gases / Q000737:chemistry; D006358:Hot Temperature; D008422:Materials Testing; D051379:Mice; D010084:Oxidation-Reduction; D010316:Particle Size; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: D018786:Bone Substitutes; D020099:Coated Materials, Biocompatible; D005740:Gases; D017886:Durapatite; D014025:Titanium