The oxidation of an equimolar FeCoNiAl medium-entropy alloy at 900 °C in various oxygen pressures

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Author(s)

  • Wu Kai
  • Yi-rong Yang
  • Wun-jhen Yu
  • Rong-tan Huang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number111560
Journal / PublicationCorrosion Science
Volume224
Online published27 Sept 2023
Publication statusPublished - Nov 2023

Link(s)

DOI

DOI
Check@CityULib
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-85172282410&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(cd4d92d7-70ef-4be5-b9c4-218c5073117c).html

Abstract

The oxidation of an equimolar FeCoNiAl medium-entropy alloy was studied at 900 °C in various O2-containing atmospheres over the oxygen pressure range of 10–105 Pa. The alloy oxidized parabolically, having its oxidation rates steadily increasing with oxygen pressure. Duplex scales formed on the oxidized substrate, consisting of an outer CoFe2O4 layer and an inner α-Al2O3 layer. The position of the Pt-marker was located at the outer- and inner-layer boundary, demonstrating that the outward cation diffusion controlled the formation of CoFe2O4, while the growth of Al2O3 was contributed by the inward oxygen diffusion. © 2023 Elsevier Ltd.

Research Area(s)

  • A. medium-entropy alloy, B. SEM, B. TEM, C. oxides

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Publication fingerprints text

100
Aluminum Oxide Material Science
100
Medium-Entropy Allo... Material Science
50
Boundary Layer Material Science
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Citation Format(s)

[ RIS ] [ BibTeX ]
The oxidation of an equimolar FeCoNiAl medium-entropy alloy at 900 °C in various oxygen pressures. / Kai, Wu; Yang, Yi-rong; Yu, Wun-jhen et al.
In: Corrosion Science, Vol. 224, 111560, 11.2023.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review