Fretting corrosion of CoCr alloys with different Cr content

Schille, Christine; Aleksandrova, V. N.; Hausch, G.; Wedenig, G.; Geis-Gerstorfer, J

doi:10.1016/j.dental.2009.01.076

Cited by 1 publication

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“…The best relationship between the analytical and the calculated mass loss of cobalt was found with electrical charges ranging from E z to 900 mV. 13 Zone coulometry provides additional information on the section of the anodic polarization plot where corrosion occurs. It is possible to calculate sections of the chosen regions relative to the total electrical charge using zone coulometry.…”

Section: Introductionmentioning

confidence: 97%

“…An example of a schematic view of an experimental CoCr alloy is shown in Figure 1. 13 Reclaru divided the anodic polarization plot into a symmetrical region of zero potential, the total passive region and the total region of breakdown by evaluating each region completely. Maranche began every region at E z , and the regions ended before the passive region, at the end of passive region or at the beginning of a breakdown and during a breakdown.…”

Section: Introductionmentioning

confidence: 99%

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Zone coulometry and ion-release analysis of degradable magnesium alloys

Schille¹,

Schweizer²,

Hort³

et al. 2013

Emerging Materials Research

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Zone coulometry and determination of ion release of an electrolyte from anodic polarization measurements are the established calculation modes for the electrochemical behavior of dental and biomedical alloys. The aim of the study was to compare the electrochemical corrosion behavior of six different experimental magnesium alloys without manganese using artificial plasma (AP) and in phosphate-buffered saline (PBS −) as simulated body fluids through anodic polarization measurements. In addition, determination of the magnesium release of the electrolytes was performed using inductively coupled plasma optical emission spectrometry and zone coulometry. Six specimens were prepared from each alloy. Anodic polarization measurements ranging from-150 mV ~E corr to-1200 mV were performed with both of the electrolytes. From each measurement, corrosion current density, the breakdown or pitting potential and its corresponding current density, zero potential, the polarization resistance, the corrosion rate were calculated. The magnesium release of the electrolytes was compared with the calculated values using Faraday's law. For zone coulometry, five different trials were completed, and the electrical charge was calculated for each potential range of all magnesium alloys tested and for both electrolytes. Lower corrosion values were found in AP than in PBS − for all measurements. However, the rankings of the alloys are similar in both the electrolytes. Zone coulometry using small potential ranges and determination of ion release can be additional evaluation tools for magnesium alloys. Emerging Materials Research Volume 2 Issue EMR5 Zone coulometry and ion-release analysis of degradable magnesium alloys Schille, Schweizer, Hort, Reichel and Geis-Gerstorfer

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%