Abstract

The corrosion behaviour of special alloys (Uranus B6 steel and Monel 400) exposed to chlorine chloride-deep eutectic solvents (DES) at 353 K has been investigated by polarization curves method. The corresponding corrosion parameters in choline chloride-oxalic acid and choline chloride-malonic acid were calculated. Micrographic images before and after immersion in the corrosive medium were obtained. Measurements of the influence of the corrosion process on the crystal structure and specific magnetization of the studied steels was carried out by using X-ray diffraction and respectivelly ponderomotive methods.

Highlights

  • The corrosion behaviour of special alloys (Uranus B6 steel and Monel 400) exposed to chlorine chloridedeep eutectic solvents (DES) at 353 K has been investigated by polarization curves method

  • The open circuit potential (OCP) of Uranus B6 and Monel 400 samples is expected to be dependent on the characteristics of resulted oxides, such as oxide thickness, chemical composition, conductivity, structure, etc

  • After 7-10 min time of immersion at 353 K in the Deep eutectic solvents (DESs) corrosive environment the studied metallic materials present OCP potential values varying from -0.09 V for Uranus B6 to 0.0161 V for Monel400 in choline chloride (ChCl)-malonic acid and from 0.027 V for Uranus B6 to 0.075V for Monel 400 in ChCl-oxalic acid

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Summary

Introduction

The corrosion behaviour of special alloys (Uranus B6 steel and Monel 400) exposed to chlorine chloridedeep eutectic solvents (DES) at 353 K has been investigated by polarization curves method. In the present work is performed a study on the corrosion behaviour of a special stainless steel (Uranus B6) and a nickel-copper alloy (Monel 400) in two different DESs (ChCloxalic acid and ChCl-malonic acid), along with the study of corrosion influence on the structure and magnetic properties of these steels.

Results
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