Estimation of Corrosion Rate of STARBOND–CoS Cobalt–Chromium Alloy in the NaCl Solutionстатья
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Дата последнего поиска статьи во внешних источниках: 12 января 2022 г.
Аннотация:The corrosion potential Ecorr of STARBOND–CoS alloy in the 0.5 M NaCl solution was measuredfor 100 h. The anodic and cathodic potentiodynamic curves were measured in the same solution after a preliminaryexposure of the test specimen at the corrosion potential Ecorr for 2–100 h. The corrosion currentdensities icorr were determined using the method of Tafel extrapolation. It is shown that Ecorr shifts from +9to +275 mV against a saturated silver–chloride reference electrode (sat. Ag/AgCl) and icorr decreases to40 nA/cm2 in 100 h. These results are explained by the alloy self-passivation, which provides its high corrosionresistance. This enables one to use STARBOND–CoS alloy for fabricating implants.