New insights on the high-corrosion resistance of UHP Mg-Ge alloys tested in a simulated physiological environment

Ting Liu; Xingrui Chen; Jeffrey Venezuela; Yuan Wang; Zhiming Shi; Wenyi Chen; Matthew Dargusch

Journal of Magnesium and Alloys (Mar 2024)

New insights on the high-corrosion resistance of UHP Mg-Ge alloys tested in a simulated physiological environment

Ting Liu,
Xingrui Chen,
Jeffrey Venezuela,
Yuan Wang,
Zhiming Shi,
Wenyi Chen,
Matthew Dargusch

Affiliations

Ting Liu: Centre for Advanced Materials Processing and Manufacturing (AMPAM), School of Mechanical and Mining Engineering, the University of Queensland, Brisbane, QLD 4072, Australia
Xingrui Chen: Centre for Advanced Materials Processing and Manufacturing (AMPAM), School of Mechanical and Mining Engineering, the University of Queensland, Brisbane, QLD 4072, Australia; CSIRO Mineral Resources, 1 Technology Court, Pullenvale, QLD 4069, Australia
Jeffrey Venezuela: Centre for Advanced Materials Processing and Manufacturing (AMPAM), School of Mechanical and Mining Engineering, the University of Queensland, Brisbane, QLD 4072, Australia; Corresponding authors.
Yuan Wang: Centre for Advanced Materials Processing and Manufacturing (AMPAM), School of Mechanical and Mining Engineering, the University of Queensland, Brisbane, QLD 4072, Australia
Zhiming Shi: Centre for Advanced Materials Processing and Manufacturing (AMPAM), School of Mechanical and Mining Engineering, the University of Queensland, Brisbane, QLD 4072, Australia
Wenyi Chen: Centre for Advanced Materials Processing and Manufacturing (AMPAM), School of Mechanical and Mining Engineering, the University of Queensland, Brisbane, QLD 4072, Australia
Matthew Dargusch: Centre for Advanced Materials Processing and Manufacturing (AMPAM), School of Mechanical and Mining Engineering, the University of Queensland, Brisbane, QLD 4072, Australia; Corresponding authors.

Journal volume & issue: Vol. 12, no. 3
pp. 1026 – 1044

Abstract

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UHP Mg-Ge alloys was recently found to provide excellent corrosion resistance. This paper provides new insights on the mechanism of improved corrosion resistance of UHP Mg-Ge alloys in Hanks' solution. The studied UHP Mg-0.5Ge and UHP Mg-1Ge alloys showed superior corrosion resistance compared to UHP Mg and WE43, with the Mg-1Ge exhibiting the best corrosion performance. The exceptional corrosion resistance of the UHP alloy is attributed to (i) Mg2Ge's ability to suppress cathodic kinetics, (ii) Ge's capability to accelerate the formation of a highly passive layer, and the (iii) low amounts of corrosion-accelerating impurities.

Published in Journal of Magnesium and Alloys

ISSN: 2213-9567 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.keaipublishing.com/en/journals/journal-of-magnesium-and-alloys/

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