Title: Corrosion performance of 5182 aluminium alloy in calcium chloride solution

Authors: Y. Cui; W. Xu; M. Du; Q. Han

Addresses: Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN 37996, USA ' Mechanical Engineering Technology Deparnment, Purdue University, West Lafayette, IN 47907 USA ' Nuclear Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA ' Mechanical Engineering Technology Deparnment, Purdue University, West Lafayette, IN 47907 USA

Abstract: Corrosion behaviour of 5182 aluminium was evaluated in terms of weight change in a 30% calcium chloride solution at temperatures ranging from 0°C to 65°C. The test results indicate that there is a critical temperature (35°C) above which the alloy experiences weight gain and below which the alloy experiences weight loss during the corrosion processes. Optical light microscopy (OLM), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS) were carried out to characterise the corrosion behaviour of this alloy. The results indicate that weight gain and weight loss occur under different corrosion mechanisms.

Keywords: 5182 aluminium alloys; corrosion behaviour; pitting; oxidation; calcium chloride; critical temperature; weight gain; weight loss.

DOI: 10.1504/IJCMSSE.2016.10002557

International Journal of Computational Materials Science and Surface Engineering, 2016 Vol.6 No.3/4, pp.197 - 203

Received: 27 Jun 2015
Accepted: 12 Oct 2015
Published online: 20 Jan 2017 *

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