title: In vitro studying corrosion behavior of porous titanium coating in dynamic electrolyte.
abstract: Porous titanium (PT) is considered as a promising biomaterials for orthopedic implants. Besides biocompatibility and mechanical properties, corrosion resistance in physiological environment is the other important factor affecting the long stability of an implant. In order to investigate the corrosion behavior of porous titanium implants in a dynamic physiological environment, a dynamic circle system was designed in this study. Then a titanium-based implant with PT coating was fabricated by plasma spraying. The corrosion resistance of PT samples in flowing 0.9% NaCl solution was evaluated by electrochemical measurements. Commercial pure solid titanium (ST) disc was used as a control. The studies of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) show that the pores in the PT play a negetive part in corrosion resistance and the flowing electrolyte can increase the corrosive rate of all titanium samples. The results suggest that pore design of titanium implants should pay attention to the effect of dynamic process of a physiological environment on the corrosion behavior of implants.
authors: College of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, PR China; Key Laboratory of Material Corrosion and Protection of Sichuan Province, Zigong 643000, PR China.
authors: Xuedan
authors: X
authors: Chen
authors: College of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, PR China; Key Laboratory of Material Corrosion and Protection of Sichuan Province, Zigong 643000, PR China. Electronic address: sendysan@suse.edu.cn.
authors: Qingshan
authors: Q
authors: Fu
authors: College of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, PR China; Key Laboratory of Material Corrosion and Protection of Sichuan Province, Zigong 643000, PR China.
authors: Yongzhong
authors: Y
authors: Jin
authors: College of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, PR China; Key Laboratory of Material Corrosion and Protection of Sichuan Province, Zigong 643000, PR China.
authors: Mingtian
authors: M
authors: Li
authors: College of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, PR China; Key Laboratory of Material Corrosion and Protection of Sichuan Province, Zigong 643000, PR China.
authors: Ruisong
authors: R
authors: Yang
authors: College of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, PR China; Key Laboratory of Material Corrosion and Protection of Sichuan Province, Zigong 643000, PR China.
authors: Xuejun
authors: X
authors: Cui
authors: Key Laboratory of Material Corrosion and Protection of Sichuan Province, Zigong 643000, PR China.
authors: Min
authors: M
authors: Gong
mesh_terms: D020099:Coated Materials, Biocompatible / Q000494:pharmacology*; D003343:Corrosion; D058266:Dielectric Spectroscopy; D004560:Electricity; D004563:Electrochemistry; D004573:Electrolytes / Q000494:pharmacology*; D016062:Porosity; D014025:Titanium / Q000494:pharmacology*
chemical_list: D020099:Coated Materials, Biocompatible; D004573:Electrolytes; D014025:Titanium
keywords: Corrosion resistance; Dynamic electrolyte; Electrochemical impedance spectroscopy; Porous titanium; Potentiodynamic polarization