title: [Preparation of hydroxyapatite coating in concentrated simulated body fluid by accelerated biomimetic synthesis].
abstract: In the present work, NiTi alloy substrates were activated by three different pretreatment processes. 5 X SBF1 and 5 X SBF2 concentrated simulated body fluids were prepared with citric acid buffer reagent, and then calcium phosphate coatings were formed quickly on NiTi alloy surface by accelerated biomimetic synthesis after pretreatment. The microstructure, composition and surface morphology of calcium phosphate coatings were studied. The results indicate that calcium phosphate coatings possess porous and net structure, which are composed of precipitated spherical particles with diameter less than 3 microm. The analysis of XRD shows that the main component of calcium phosphate coatings is hydroxyapatite, whereas the concentrated 5 x SBF simulated body fluid, which is in the absence of Mg2+ and HCO3- crystal growth inhibitors, apparently accelerates the growth rate of hydroxyapatite coatings.
authors.affiliation: School of Chemistry Engineering and Materials, Dalian Institute of Light Industry, DaLian 116034, China.
authors.forename: Yadong
authors.initials: Y
authors.lastname: Li
authors.forename: Jingxiao
authors.initials: J
authors.lastname: Liu
authors.forename: Fei
authors.initials: F
authors.lastname: Shi
authors.forename: Nailing
authors.initials: N
authors.lastname: Tang
authors.forename: Ling
authors.initials: L
authors.lastname: Yu
mesh_terms: D040761:Biomimetic Materials; D001826:Body Fluids; D002130:Calcium Phosphates / Q000737:chemistry; D020099:Coated Materials, Biocompatible / Q000138:chemical synthesis*; D003198:Computer Simulation; D017886:Durapatite / Q000138:chemical synthesis*; D006801:Humans; D009532:Nickel; D014025:Titanium
chemical_list: D002130:Calcium Phosphates; D020099:Coated Materials, Biocompatible; C040654:titanium nickelide; D009532:Nickel; D017886:Durapatite; D014025:Titanium