Electrodeposition of Al-Mo Alloys from the Lewis Acidic Aluminum Chloride-1-Ethyl-3-Methylimidazolium Chloride Molten Salt

Published

May 1, 2004

Author(s)

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

Abstract

The electrodeposition of aluminum Molybdenum alloys was examined at copper rotating disk and wire substrates in the Lewis acidic 66.7-33.3 mole percent aluminum chloride-1-ethyl-3-methylimidazolium chloride molten salt containing Mo(II) in form of dissolved (Mo6Cl8)Cl4. The molybdenum content of the electrodeposits depneded on the electrode rotation rate, Mo(II) concentration, and the bath temperature. it was possible to produce non-equilibrium alloys containing up to 11 atomic percent Mo. These alloy deposits were dense, crystalline, and chloride-free. Al-Mo alloys containing more than 8 atomic percent Mo exhibited a chloride corrosion pitting potential of approximately +800 mV against pure aluminum. The corrosion resistance of this alloy is superior to that of all of the aluminum-transition metal alloys that have been electrodeposited to date from chloroaluminate molten salts.

Citation

Journal of the Electrochemical Society

Volume

152

Issue

9

Pub Type

Journals

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Keywords

aluminum-molybdenum, electrodeposition, molten salt

Citation

Tsuda, T. , Hussey, C. and Stafford, G. (2004), Electrodeposition of Al-Mo Alloys from the Lewis Acidic Aluminum Chloride-1-Ethyl-3-Methylimidazolium Chloride Molten Salt, Journal of the Electrochemical Society, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=853297 (Accessed December 16, 2024)