Oxidation studies of Al alloys: Part I Al-Cu (liquid phase) alloy

Wu, G and Dash, K and Galano, M L and O'Reilly, K A Q (2019) Oxidation studies of Al alloys: Part I Al-Cu (liquid phase) alloy. In: CORROSION SCIENCE, 157 . pp. 41-50.

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Abstract

This unique investigation explores the nature and chemistry of the oxides on Al-Cu alloys in the liquid state and conducts thermodynamic simulations and kinetic studies of the oxidation process. The morphology, microstructural evolution and chemistry of the oxides were explained over different time intervals. Thermodynamic simulations were performed to explain the formation and stability of oxides in the Al-5Cu alloy; the oxidation mechanism was discussed and compared to that of pure Al. Between 450-650 degrees C, the oxidation kinetics of Al exhibit parabolic and Al-5Cu shows pseudo-parabolic behaviour whereas between 750-950 degrees C both follow linear rate equations with activation energies of 150-200 kJ mol(-1).

Item Type:	Journal Article
Publication:	CORROSION SCIENCE
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Additional Information:	copyright for this article belongs to PERGAMON-ELSEVIER SCIENCE LTD
Keywords:	Oxidation; Thermodynamics; Kinetics; X-ray photoelectron spectroscopy
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	19 Sep 2019 09:29
Last Modified:	19 Sep 2019 09:29
URI:	http://eprints.iisc.ac.in/id/eprint/63512

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