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Corrosion characteristics of high entropy alloys
journal contributionposted on 2023-11-06, 00:52 authored by Y Qiu, MA Gibson, HL Fraser, N Birbilis
The present paper reports on the electrochemical properties of a wide range of high entropy alloys (HEAs) in a 0.6 M NaCl solution. A consolidated treatise of the topic has to date been lacking, and the purpose of the work herein is to present a primitive galvanic series for numerous HEAs, along with a broad survey of results typifying their electrochemical characteristics, passivity and comparative electrochemistry. The results are coupled with microstructural characterisation. The range of potentials for HEAs is comparable to or nobler than austenitic stainless steel, with a number of HEAs displaying higher pitting potential (Epit) values than stainless steels, in spite of possessing heterogeneous microstructures.
JournalMaterials Science and Technology (United Kingdom)
PublisherTAYLOR & FRANCIS LTD
Science & TechnologyTechnologyMaterials Science, MultidisciplinaryMetallurgy & Metallurgical EngineeringMaterials ScienceHigh entropy alloyCorrosionGalvanic seriesPolarisationElectrochemistryMicrostructureSOLID-SOLUTION PHASEGLASSY ALLOYMICROSTRUCTUREBEHAVIORSUPERALLOYRESISTANCESTABILITYDECOMPOSITIONTEMPERATUREEVOLUTION