Electrodeposition of Chromium Black from Ionic Liquids

Andrew P. AbbottChemistry Department, University of Leicester, Leicester, UK, LEI 7RH. U. K.Correspondence[email protected]

Glen CapperChemistry Department, University of Leicester, Leicester, UK, LEI 7RH. U. K.

David L. DaviesChemistry Department, University of Leicester, Leicester, UK, LEI 7RH. U. K.

Raymond K. RasheedChemistry Department, University of Leicester, Leicester, UK, LEI 7RH. U. K.

John ArcherPoeton Industries Ltd. Eastern Avenue, Gloucester, GL4 3DN. U. K.

Colin JohnPoeton Industries Ltd. Eastern Avenue, Gloucester, GL4 3DN. U. K.

SUMMARY

The efficient electrodeposition of chromium from an ionic liquid formed between choline chloride and CrClr6H20 is demonstrated. The addition of lithium chloride is found to allow the deposition of black chromium films that afford excellent corrosion resistance. The deposits formed are crack-free and made up of nanocrystalline material.

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Electrodeposition of Chromium Black from Ionic Liquids

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Electrodeposition of Chromium Black from Ionic Liquids

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