期刊
CORROSION SCIENCE
卷 157, 期 -, 页码 41-50出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2019.05.013
关键词
Oxidation; Thermodynamics; Kinetics; X-ray photoelectron spectroscopy
资金
- Department of Materials, University of Oxford
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).
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