. . "[00D736E3685A]" . "The corrosion behavior of the Ti-33.5Nb-5.7Ta alloy (Ti-Nb-Ta) as a biocompatible beta-type Ti alloy during long-term immersion in simulated body fluid was investigated. Like pure Ti, pitting corrosion did not occur on Ti-Nb-Ta during anodic polarization. Thus, alloying of Ti with Nb and Ta did not change the chloride-ion sensitivity. Metal ion release of Ti, Nb, and Ta was detected after 7-d immersion in the solution; however, the amounts of ions were much smaller than those from Type316L stainless steel. X-ray photoelectron spectroscopy revealed that the fractions of Nb and Ta in the passive layer increased during the immersion while that of Ti decreased. The corrosion rate of Ti-Nb-Ta determined by electrochemical impedance spectroscopy kept decreasing over a period of 15 d while the thickness of the passive layer did not change after 1 d. Thus, the reconstruction of the passive layer of the alloy was proven to be important for metal ion release during long-term implantation in a living body. Thus, Ti-Nb-Ta has sufficient corrosion resistance as a biocompatible beta-type Ti alloy. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.045210jes] All rights reserved."@en . "10" . . "159" . . "Journal of the electrochemical society" . "RIV/00159816:_____/12:#0001016" . . "RIV/00159816:_____/12:#0001016!RIV13-MZ0-00159816" . "10.1149/2.045210jes" . "Doi, H." . . . . . . "000309105500030" . . "2"^^ . "147429" . "I, P(1M0528)" . "Prach\u00E1r, Patrik" . "Long-Term Corrosion Behavior of Biocompatible beta-Type Ti Alloy in Simulated Body Fluid" . "Hanawa, T." . "Bart\u00E1kov\u00E1, Sonia" . . "Titanium; Niobium; Tantalum; alloy"@en . "0013-4651" . "Yalatu, S." . . "Migita, S." . . "Long-Term Corrosion Behavior of Biocompatible beta-Type Ti Alloy in Simulated Body Fluid" . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "8"^^ . "Long-Term Corrosion Behavior of Biocompatible beta-Type Ti Alloy in Simulated Body Fluid"@en . "Nomura, N." . "The corrosion behavior of the Ti-33.5Nb-5.7Ta alloy (Ti-Nb-Ta) as a biocompatible beta-type Ti alloy during long-term immersion in simulated body fluid was investigated. Like pure Ti, pitting corrosion did not occur on Ti-Nb-Ta during anodic polarization. Thus, alloying of Ti with Nb and Ta did not change the chloride-ion sensitivity. Metal ion release of Ti, Nb, and Ta was detected after 7-d immersion in the solution; however, the amounts of ions were much smaller than those from Type316L stainless steel. X-ray photoelectron spectroscopy revealed that the fractions of Nb and Ta in the passive layer increased during the immersion while that of Ti decreased. The corrosion rate of Ti-Nb-Ta determined by electrochemical impedance spectroscopy kept decreasing over a period of 15 d while the thickness of the passive layer did not change after 1 d. Thus, the reconstruction of the passive layer of the alloy was proven to be important for metal ion release during long-term implantation in a living body. Thus, Ti-Nb-Ta has sufficient corrosion resistance as a biocompatible beta-type Ti alloy. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.045210jes] All rights reserved." . . . . . "Tsutsumi, Y." . "6"^^ . "Long-Term Corrosion Behavior of Biocompatible beta-Type Ti Alloy in Simulated Body Fluid"@en . .