Fengyi Zhang , Lijun Zhang , Xueming Wei , Chunzhi Zhang , Qixiang Jia , Kai Sun , Dongtao Duan , Gong Li
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Abstract
The corrosion and passive behaviors of CoCrFeNiNbx (x = 0.3, 0.45, 0.6) high-entropy alloys with eutectic microstructures were studied in different electrolyte solutions (0.6 M NaCl, 0.6 M Na2SO4, and 0.6 M H2SO4). The potentiodynamic polarisation test showed that the pitting potential of Nb0.45 alloy reached 1.084V, and the alloy had the best corrosion resistance in Na2SO4 solution. Mott Schottky tests and X-ray photoelectron spectroscopy tests on the Nb0.45 alloy, and it was found that different film forming mechanisms in neutral and acidic solutions. A double-layer passivation film mainly composed of Cr(OH)3, Cr2O3, and Nb2O5 was formed. These studies provide basic theoretical reference for the preparation of new corrosion resistant high-entropy alloys.
期刊介绍：
This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys.
The journal reports the science and engineering of metallic materials in the following aspects:
Theories and experiments which address the relationship between property and structure in all length scales.
Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations.
Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties.
Technological applications resulting from the understanding of property-structure relationship in materials.
Novel and cutting-edge results warranting rapid communication.
The journal also publishes special issues on selected topics and overviews by invitation only.
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