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Electrochemical behavior of a magnesium ZK60 alloy processed by high-pressure torsion

Electrochemical behavior of a magnesium ZK60 alloy processed by high-pressure torsion
Electrochemical behavior of a magnesium ZK60 alloy processed by high-pressure torsion

High-pressure torsion (HPT) was used to evaluate the effect of straining on the electrochemical properties of a ZK60 magnesium alloy. The samples were processed using HPT up to 20 turns and the electrochemical responses were examined through polarization, EIS, Mott–Schottky and hydrogen evolution tests. Electron back-scatter diffraction (EBSD) studies showed more homogeneity with finer average grain sizes accompanied by the evolution of a nobler texture when increasing the numbers of HPT turns. Ultimately, this led to improved corrosion behavior for the HPT-processed disks. Post corrosion observations revealed improved protective layers after higher turns of HPT.

EIS, HPT, Magnesium ZK60, Mott-Schottky, Polarization
0010-938X
90-100
Torbati-Sarraf, Hamidreza
7ce67903-b476-4c2b-aff1-f9dd2aa97702
Torbati-Sarraf, Seyed Alireza
0d44235a-4532-4147-b270-487fb303d386
Poursaee, Amir
93fbeb01-8d87-47c7-b745-2aa8834ecf0c
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Torbati-Sarraf, Hamidreza
7ce67903-b476-4c2b-aff1-f9dd2aa97702
Torbati-Sarraf, Seyed Alireza
0d44235a-4532-4147-b270-487fb303d386
Poursaee, Amir
93fbeb01-8d87-47c7-b745-2aa8834ecf0c
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Torbati-Sarraf, Hamidreza, Torbati-Sarraf, Seyed Alireza, Poursaee, Amir and Langdon, Terence G. (2019) Electrochemical behavior of a magnesium ZK60 alloy processed by high-pressure torsion. Corrosion Science, 154, 90-100. (doi:10.1016/j.corsci.2019.04.006).

Record type: Article

Abstract

High-pressure torsion (HPT) was used to evaluate the effect of straining on the electrochemical properties of a ZK60 magnesium alloy. The samples were processed using HPT up to 20 turns and the electrochemical responses were examined through polarization, EIS, Mott–Schottky and hydrogen evolution tests. Electron back-scatter diffraction (EBSD) studies showed more homogeneity with finer average grain sizes accompanied by the evolution of a nobler texture when increasing the numbers of HPT turns. Ultimately, this led to improved corrosion behavior for the HPT-processed disks. Post corrosion observations revealed improved protective layers after higher turns of HPT.

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Alireza-CorrosionScience - Accepted Manuscript
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More information

Accepted/In Press date: 8 April 2019
e-pub ahead of print date: 10 April 2019
Published date: 1 July 2019
Keywords: EIS, HPT, Magnesium ZK60, Mott-Schottky, Polarization

Identifiers

Local EPrints ID: 432909
URI: http://eprints.soton.ac.uk/id/eprint/432909
ISSN: 0010-938X
PURE UUID: 8773094f-c8eb-47bc-a9f3-39091a965489
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 31 Jul 2019 16:30
Last modified: 07 Oct 2020 06:33

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