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51318-11139-Corrosion behavior in geothermal steam of CoCrFeNiMo high entropy alloy

Picture for Corrosion behavior in geothermal steam of CoCrFeNiMo high entropy alloy
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A multicomponent High Entropy Alloy (HEA) CoCrFeNiMo processed with vacuum arc remelting procedure was tested for corrosion in geothermal environment in the Reykjanes Geothermal Power Plant in Iceland.

Product Number: 51318-11139-SG
Author: Ioana CSÁKI / Sigrun Nanna KARLSDOTTIR / Radu STEFANOIU / Laura Elena GEAMBAZU
Publication Date: 2018
Industry: Energy Generation
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$20.00

A multicomponent High Entropy Alloy (HEA) CoCrFeNiMo processed with vacuum arc remelting procedure was tested for corrosion in geothermal environment in the Reykjanes Geothermal Power Plant in Iceland. Microstructural and chemical composition analysis of the material was performed before and after testing in the geothermal steam with an electron scanning microscope (SEM) and X-ray Energy Dispersive Spectroscopy (X-EDS). A weight loss method was also used to measure the corrosion rate of the CoCrFeNiMo high entropy alloy. The results showed that the uniform corrosion rate low, on average 0.0001mm/year. And inspection of the specimen after the exposure in the geothermal environment revealed corrosion products contains sulfur and oxygen. The low corrosion rate obtained for this HEA suggest that this alloy could be a good candidate for further coating components working in geothermal steam

Key words: corrosion, geothermal environment, multicomponent alloys, microstructure, corrosion products

A multicomponent High Entropy Alloy (HEA) CoCrFeNiMo processed with vacuum arc remelting procedure was tested for corrosion in geothermal environment in the Reykjanes Geothermal Power Plant in Iceland. Microstructural and chemical composition analysis of the material was performed before and after testing in the geothermal steam with an electron scanning microscope (SEM) and X-ray Energy Dispersive Spectroscopy (X-EDS). A weight loss method was also used to measure the corrosion rate of the CoCrFeNiMo high entropy alloy. The results showed that the uniform corrosion rate low, on average 0.0001mm/year. And inspection of the specimen after the exposure in the geothermal environment revealed corrosion products contains sulfur and oxygen. The low corrosion rate obtained for this HEA suggest that this alloy could be a good candidate for further coating components working in geothermal steam

Key words: corrosion, geothermal environment, multicomponent alloys, microstructure, corrosion products

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