title: [Corrosion resistant properties of different anodized microtopographies on titanium surfaces].
abstract: OBJECTIVE
  To investigate the corrosion resistant properties of titanium samples prepared by anodic oxidation with different surface morphologies.
  
  
  METHODS
  Pure titanium substrates were treated by anodic oxidation to obtain porous titanium films in micron, submicron, and micron-submicron scales. The surface morphologies, coating cross-sectional morphologies, crystalline structures, and surface roughness of these samples were characterized. Electrochemical technique was used to measure the corrosion potential (Ecorr), current density of corrosion (Icorr), and polarization resistance (Rp) of these samples in a simulated body fluid.
  
  
  RESULTS
  Pure titanium could be modified to exhibit different surface morphologies by the anodic oxidation technique. The Tafel curve results showed that the technique can improve the corrosion resistance of pure titanium. Furthermore, the corrosion resistance varied with different surface morphologies. The submicron porous surface sample demonstrated the best corrosion resistance, with maximal Ecorr and Rp and minimal Icorr.
  
  
  CONCLUSIONS
  Anodic oxidation technology can improve the corrosion resistance of pure titanium in a simulated body fluid. The submicron porous surface sample exhibited the best corrosion resistance because of its small surface area and thick barrier layer.
authors.forename: Huo
authors.initials: H
authors.lastname: Fangjun
authors.forename: Xie
authors.initials: X
authors.lastname: Li
authors.forename: Tong
authors.initials: T
authors.lastname: Xingye
authors.forename: Wang
authors.initials: W
authors.lastname: Yueting
authors.forename: Guo
authors.initials: G
authors.lastname: Weihua
authors.forename: Tian
authors.initials: T
authors.lastname: Weidong
mesh_terms: D003343:Corrosion; D003430:Cross-Sectional Studies; D004566:Electrodes; D006801:Humans; D010084:Oxidation-Reduction; D016062:Porosity; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: D014025:Titanium