کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
192523 459744 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reactivity of CoCrMo alloy in physiological medium: Electrochemical characterization of the metal/protein interface
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Reactivity of CoCrMo alloy in physiological medium: Electrochemical characterization of the metal/protein interface
چکیده انگلیسی

The influence of different concentrations of phosphate ions on the corrosive behavior of a CoCrMo alloy is investigated. The study is conducted using electrochemical techniques (polarization and potentiodynamic measurements, electrochemical impedance spectroscopy (EIS)) and X-ray photoelectron spectroscopy (XPS). It was found that phosphate ions are vastly responsible for the blocking of the active surface with the addition of calf serum having little effect. This is in contrast to titanium where the competition between the adsorption mechanisms of proteins and those relating to phosphate ions was evidenced recently. The formation and quantification of CrO42− as a result of a dissolution of Cr2O3 oxide layer was evidenced using UV/vis absorption spectroscopy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 53, Issue 13, 20 May 2008, Pages 4461–4469
نویسندگان
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