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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.
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Austenitic stainless, S31254, and Hastelloy, N10276, were clad on low carbon steel plates with explosive welding for testing in a geothermal environment. Results from visual inspection and microstructural & chemical composition analysis with a scanning electron microscopy and X-ray energy dispersive spectroscopy
Update on recent experiences from laboratory tests performed at service conditions for geothermal applications. Incorporated in a catalogue of suitable materials for applications geothermal power plants. Users shall be enabled to have a basis for designing such facilities.
Development is needed for new materials to extend the life/reliability of surfaces used in geothermal turbines. Results of Tests and inspection of coatings on low carbon steel including; visual inspection, microstructural and chemical composition analysis with scannoing electro microscopy and energy dispersive x-ray spectroscopy.
The high temperature and chemical composition of the geothermal fluid results in corrosion damage of drilling equipment, well casing and other components made of steel and iron alloys used in geothermal power production. This corrosive nature of the geothermal environment decreases the service life and increases the need for maintenance of geothermal power plants and geothermal wells. The main reasons for the corrosion of components are hydrogen sulfide (H2S) and carbon dioxide (CO2) present in geothermal system.
A multicomponent High Entropy Alloy (HEA) AlCrFeNiMn processed with vacuum arc remelting procedure was tested for corrosion in geothermal environment in the Reykjanes Geothermal Power Plant in Iceland.