Santiago Sosa Haudet, Martín A. Rodríguez
Nickel base alloys are considered among candidate materials for engineered barriers of nuclear repositories. The localized corrosion resistance is a determining factor in the materials selection for this application. This work compares the crevice corrosion resistance of selected nickel base alloys, namely N06625, N06030, N06035, N06022, N07022 and N10362. The crevice corrosion repassivation potential (E_R,CREV) of the tested alloys was determined by the Potentiodynamic-Galvanostatic-Potentiodynamic method. The testing temperature was 60ºC and the chloride concentrations used were 0.1 M, 1 M and 10 M. A linear relationship between E_R,CREV and the logarithm of chloride concentration was found. E_R,CREV increased linearly with the PREN (Pitting Resistance Equivalent Number) in concentrated chloride solutions. E_R,CREV is the sum of three contributions: E_CORR*, η and ΔΦ. E_CORR* and η increased linearly with PREN, while ΔΦ increased linearly with PREN for concentrated chloride solutions, not showing a definite trend with PREN for the more dilute solutions.
@article{9c6202ed-af14-4028-9c95-d935bb3789ff,
title={Effect of Alloy Composition on the Crevice Corrosion Resistance of Nickel Alloys},
author={Santiago Sosa Haudet and Martín A. Rodríguez},
year={2012},
language={es}
}TY - JOUR TI - Effect of Alloy Composition on the Crevice Corrosion Resistance of Nickel Alloys AU - Santiago Sosa Haudet AU - Martín A. Rodríguez PY - 2012 LA - es ER -
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