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Electrodeposition of Al-Mo-Mn Ternary Alloys from the Lewis Acidic AlCl(subscript 3)-EtMeImCl Molten Salt

Published

Author(s)

T Tsuda, C L. Hussey, Gery R. Stafford

Abstract

The electrodeposition of Al-Mo-Mn ternary alloys was examined in the Lewis acidic 66.7-33.3 percent mole fraction (m/o) aluminum chloride-1-ethyl-3-methylimidazolium chloride (AlCl(subscript 3)-EtMeImCl) molten salt containing Mo(II) and Mn(II). By adjusting the C(subscript Mn(II))/C(subscript Mo(II)) concentration ratio in the plating solution and employing different current densities, it was possible to prepare alloys with widely varying compositions and surface morphologies. All Al-Mo-Mn alloys were dense, compact, and adhered well to the copper substrate surface. The addition of small amounts of Mn to the Al-Mo alloy resulted in an improvement in the chloride pitting corrosion resistance and metallic brightness, Al(subscript 90.1)Mo(subscript 9.9)Mn(subscript 0) displayed a pitting potential of +725 mV versus Al, whereas Al(subscript 88.8)Mo(subscript 10.0) Mn (subscript 1.2) exhibited a pitting potential of +868 mV versus Al. Al-Mo-Mn alloys that contained more than about 10 a/o Mo+Mn exhibited a metallic glass structure.
Citation
Journal of the Electrochemical Society
Volume
152

Keywords

Al-Mo-Mn, electrodeposition, molten salt

Citation

Tsuda, T. , Hussey, C. and Stafford, G. (2005), Electrodeposition of Al-Mo-Mn Ternary Alloys from the Lewis Acidic AlCl(subscript 3)-EtMeImCl Molten Salt, Journal of the Electrochemical Society, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=853379 (Accessed February 27, 2024)
Created July 27, 2005, Updated October 12, 2021