title: Corrosion characteristics of anodized Ti-(10-40wt%)Hf alloys for metallic biomaterials use.
abstract: The effect of anodizing on corrosion resistance of Ti-xHf alloys has been investigated. Ti-xHf alloys were prepared and anodized at 120, 170 and 220 V in 1 M H(3)PO(4) solution, and crystallized at 300 and 500°C. Corrosion experiments were carried out using a potentiostat in 0.15 M NaCl solution at 36.5 ± 1°C. The Ti-xHf alloys exhibited the α' and anatase phases. The pore size on the anodized surface increases as the applied voltage is increased, whereas the pore size decreases as the Hf content is increased. The anodized Ti-xHf alloys exhibited better corrosion resistance than non-anodized Ti-xHf alloys.
authors.affiliation: Department of Dental Materials, Research Center of Nano-Interface Activation for Biomaterials, Chosun University, Gwangju, Korea.
authors.forename: Yong-Hoon
authors.initials: YH
authors.lastname: Jeong
authors.forename: Han-Cheol
authors.initials: HC
authors.lastname: Choe
authors.forename: William A
authors.initials: WA
authors.lastname: Brantley
mesh_terms: D001672:Biocompatible Materials / Q000138:chemical synthesis / Q000737:chemistry*; D003343:Corrosion; D003722:Dental Alloys / Q000032:analysis / Q000737:chemistry*; D004566:Electrodes; D006195:Hafnium / Q000737:chemistry*; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D009994:Osmolar Concentration; D013499:Surface Properties; D013696:Temperature; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D001672:Biocompatible Materials; D003722:Dental Alloys; D014025:Titanium; D006195:Hafnium