Electrochemical study of corrosion in aqueous high pressure, high temperature media and measurements of materials corrosion rates: applications to the hydrothermal treatments of organic wastes by SCWO

This paper presents, using a specific experimental set-up, the cathodic polarization curves recorded under steady-state and quasi-stationary conditions, for 316L stainless steel, Alloy C-276 and T60 titanium materials, in oxidative chlorinated aqueous media. Measurements were carried out at temperat...

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Bibliographic Details
Published in:The Journal of supercritical fluids 2003-06, Vol.26 (2), p.169-179
Main Authors: Delville, M.H, Botella, Ph, Jaszay, Th, Frayret, J.P
Format: Article
Language:English
Subjects:
Chemical Sciences
Corrosion rate
Electrochemical device
Hydrothermal oxidation
Material chemistry
Nickel-based alloys
Titanium
‘Current–potential’ laws
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Summary:This paper presents, using a specific experimental set-up, the cathodic polarization curves recorded under steady-state and quasi-stationary conditions, for 316L stainless steel, Alloy C-276 and T60 titanium materials, in oxidative chlorinated aqueous media. Measurements were carried out at temperatures and pressures reaching supercritical conditions (400 °C, 28 MPa). The influence of various parameters such as the pH, the nature of materials, the sub- or supercritical state of the medium, was investigated using the determination of the corrosion rate. A hierarchy of the electrochemical behavior of the materials was established as far as the resistance to corrosion of industrial plants is concerned.
ISSN:0896-8446
1872-8162
DOI:10.1016/S0896-8446(02)00152-3