title: Nucleation and growth of apatite on chemically treated titanium alloy: an electrochemical impedance spectroscopy study.
abstract: Bone-like apatite formed on the surface of Ti6Al4V pretreated with NaOH solution after having been immersed in simulated body fluid (SBF), while no apatite formed on the surface of untreated Ti6Al4V. In the present study, electrochemical impedance spectroscopy (EIS) measurement was used to investigate the nucleation and growth of apatite on chemically treated Ti6Al4V immersed in the SBF solution, and the difference between the behaviors of treated and untreated Ti6Al4V. Appropriate equivalent circuit models were constructed to describe the nucleation and growth of apatite, and thin oxide film formed on the surface of untreated Ti6Al4V. It was found that EIS is a useful method for investigating the nucleation and growth of bone-like apatite on Ti6Al4V pretreated with NaOH solution.
authors.affiliation: School of Mechanical and Production Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Singapore. c.wang@bham.ac.uk
authors.forename: C X
authors.initials: CX
authors.lastname: Wang
authors.forename: M
authors.initials: M
authors.lastname: Wang
authors.forename: X
authors.initials: X
authors.lastname: Zhou
mesh_terms: D000497:Alloys; D001031:Apatites / Q000737:chemistry*; D032701:Biomimetics / Q000379:methods; D001826:Body Fluids / Q000737:chemistry*; D020099:Coated Materials, Biocompatible / Q000138:chemical synthesis / Q000737:chemistry*; D017886:Durapatite / Q000737:chemistry; D017097:Electric Impedance; D004563:Electrochemistry / Q000379:methods*; D008422:Materials Testing; D008968:Molecular Conformation; D012972:Sodium Hydroxide / Q000737:chemistry*; D013057:Spectrum Analysis / Q000379:methods*; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: D000497:Alloys; D001031:Apatites; D020099:Coated Materials, Biocompatible; C031462:titanium alloy (TiAl6V4); D012972:Sodium Hydroxide; D017886:Durapatite; D014025:Titanium