Microstructure and corrosion properties of MnCrFeCoNi high entropy alloy-graphene oxide composite coatings

Aliyu, A and Srivastava, C (2019) Microstructure and corrosion properties of MnCrFeCoNi high entropy alloy-graphene oxide composite coatings. In: Materialia, 5 .

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Abstract

Microstructure and corrosion properties evaluation of MnCrFeCoNi high entropy alloys (HEA) composite coatings containing five different graphene oxide (GO) amounts was conducted. The HEA coatings were electrodeposited over mild steel substrate. The corrosion resistance properties of the HEA and HEA-GO composite coatings determined using potentiodynamic polarization and electrochemical impedance spectroscopy tests conducted in 3.5 NaCl solution revealed that with the addition of GO the corrosion resistance of the coating increased. Detailed microstructural characterization using the electron microscopy technique showed that GO enhanced the amount of Mn and Cr in the coatings leading to higher corrosion resistance. © 2019 Acta Materialia Inc.

Item Type:	Journal Article
Publication:	Materialia
Publisher:	Elsevier B.V.
Additional Information:	The copyright for this article belongs to Elsevier B.V.
Keywords:	Chromium alloys; Coatings; Cobalt alloys; Composite coatings; Corrosion; Corrosion resistance; Corrosive effects; Electrochemical corrosion; Electrochemical impedance spectroscopy; Entropy; Graphene; Graphene oxide; High-entropy alloys; Iron alloys; Manganese alloys; Microstructure; Sodium chloride; Transmission electron microscopy, 3.5 nacl solutions; Corrosion property; Micro-structural characterization; Microscopy technique; Mild steel substrates; Resistance properties, Corrosion resistant coatings
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	13 Dec 2022 04:31
Last Modified:	13 Dec 2022 04:31
URI:	https://eprints.iisc.ac.in/id/eprint/78313

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