Pitting corrosion of the high-entropy alloy Co1.5CrFeNi1.5Ti0.5Mo0.1 in chloride-containing sulphate solutions

The purpose of this study is to investigate the effect of SO 4 2 - ions on the pitting potential (E pit) and critical pitting temperature (CPT) of high-entropy alloy Co1.5CrFeNi1.5Ti0.5Mo0.1 in chloride solutions. The results indicate that the values of CPT for the alloy in 0.1, 0.5, and 1mol/L NaCl...

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Bibliographic Details
Published in:Corrosion science 2010-10, Vol.52 (10), p.3481-3491
Main Authors: CHOU, Y. L, WANG, Y. C, YEH, J. W, SHIH, H. C
Format: Article
Language:English
Subjects:
Alloying additive
Applied sciences
Chlorides
Corrosion
Corrosion environments
Corrosion potential
Exact sciences and technology
Logarithms
Metals. Metallurgy
Pitting (corrosion)
Pitting potential
Sulfates
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Summary:The purpose of this study is to investigate the effect of SO 4 2 - ions on the pitting potential (E pit) and critical pitting temperature (CPT) of high-entropy alloy Co1.5CrFeNi1.5Ti0.5Mo0.1 in chloride solutions. The results indicate that the values of CPT for the alloy in 0.1, 0.5, and 1mol/L NaCl are 70, 60 and 60AC, respectively; the values of E pit are linear with the logarithm of chloride concentrations at 70 and 80AC; and the addition of SO 4 2 - ions to chloride solutions has a positive effect on both E pit and CPT as the ratio of SO 4 2 - /Cla is higher than 0.5.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2010.06.025