2010
DOI: 10.1002/jbm.a.32684
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Electrochemical behavior of cobalt–chromium alloys in a simulated physiological solution

Abstract: Several cobalt-chromium alloys such as MP35N are used for biomedical implants. The electrochemical behavior of these alloys in the passive range differs from that of other biomedical alloys. In particular, their cyclic potentiodynamic polarization curves exhibit an increase in current at a potential of about 0.4 V (SCE). This study examined the electrochemical behavior of MP35N in phosphate-buffered saline (PBS). Tests were performed on mechanically polished MP35N rod and electropolished MP35N wire using cycli… Show more

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Cited by 39 publications
(88 citation statements)
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“…Brought to you by | New York University Bobst Library Technical Services Authenticated Download Date | 5/17/15 5:30 AM in current at approximately 0.4 V, followed by an arrest (or small peak) at about 0.6 V before the current increased again (Kocijan et al, 2004;Milosev & Strehblow, 2003). A similar arrest has been observed at 0.6 to 0.7 V for Co-28Cr-6Mo in buffered 0.14 m NaCl (Figure 7) (Hodgson et al, 2004) and aerated PBS (Igual Muñoz & Mischler, 2007), Co-35Ni-20Cr-10Mo in Hanks solution (Kocijan et al, 2004), and MP35N in PBS (Pound, 2010). Schmuki, Virtanen, Davenport, and Vitus (1996) used x-ray near-edge spectroscopy to investigate the oxide on Cr in a borate buffer (pH 8.4).…”
Section: Solid-state Oxidationsupporting
confidence: 59%
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“…Brought to you by | New York University Bobst Library Technical Services Authenticated Download Date | 5/17/15 5:30 AM in current at approximately 0.4 V, followed by an arrest (or small peak) at about 0.6 V before the current increased again (Kocijan et al, 2004;Milosev & Strehblow, 2003). A similar arrest has been observed at 0.6 to 0.7 V for Co-28Cr-6Mo in buffered 0.14 m NaCl (Figure 7) (Hodgson et al, 2004) and aerated PBS (Igual Muñoz & Mischler, 2007), Co-35Ni-20Cr-10Mo in Hanks solution (Kocijan et al, 2004), and MP35N in PBS (Pound, 2010). Schmuki, Virtanen, Davenport, and Vitus (1996) used x-ray near-edge spectroscopy to investigate the oxide on Cr in a borate buffer (pH 8.4).…”
Section: Solid-state Oxidationsupporting
confidence: 59%
“…The current typically shows another increase, as noted above, when the potential is raised above 0.6 to 0.7 V. This increase results from transpassive dissolution, involving the release of chromate and Ni ions (Pound, 2010). The concentration of dissolved Cr and Ni was found to rise appreciably as the potential was increased to 0.9 V (Figure 9).…”
Section: Transpassive Dissolutionmentioning
confidence: 58%
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“…Muñoz et al [7] studied the effect of interactions of phosphate and albumin in model-simulated body fluids on the passive behavior of CoCrMo. Several authors have used the EIS to obtain information about the passive film dissolution rate, conductivity and thickness [8,9]. However, the direct contact with the surrounding medium occurs once the destruction or breakage of the passive film.…”
Section: Introductionmentioning
confidence: 99%
“…These solutions include simple isotonic saline 0.9% NaCl [85][86][87] to phosphate buffer saline [67,[88][89][90][91]], ringer's solution, and hanks solution [92][93][94][95]. Ionic solutions similar to body fluids require the addition of biomolecules such as proteins, phospholipids, and glycoproteins.…”
Section: Corrosion Of Cocrmo Implantsmentioning
confidence: 99%