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Investigating the corrosion resistance of spark plasma sintered copper with ruthenium powder

Winnie Zaba (School of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg, South Africa and DST-NRF Centre of Excellence in Strong Materials, University of the Witwatersrand, Johannesburg, South Africa)
Josias Willem Van der Merwe (School of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg, South Africa and DST-NRF Centre of Excellence in Strong Materials, University of the Witwatersrand, Johannesburg, South Africa)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 21 September 2018

Issue publication date: 30 October 2018

67

Abstract

Purpose

The corrosion resistance of copper and copper-ruthenium alloys produced by powder metallurgy (spark plasma sintering process) and exposed in 2M sulphuric acid at 45°C and 65°C was investigated using scanning electron microscopy and potentiodynamic polarisation technique.

Design/methodology/approach

The small additions of ruthenium (0.5, 1 and 2 Wt.%) to the copper resulted in improved corrosion resistance of the copper alloy by up to 90 per cent when compared to casted copper.

Findings

All the sintered copper and copper alloys proved to have increased the corrosion resistance in all the temperatures.

Originality/value

Powder metallurgy was used in achieving these improvements.

Keywords

Citation

Zaba, W. and Van der Merwe, J.W. (2018), "Investigating the corrosion resistance of spark plasma sintered copper with ruthenium powder", Anti-Corrosion Methods and Materials, Vol. 65 No. 6, pp. 594-604. https://doi.org/10.1108/ACMM-07-2018-1965

Publisher

:

Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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