Aqueous electrodeposition of rare earth and transition metals
OwnerKen Nobe, Morton Schwartz +2inventors
InventorsKen Nobe, Morton Schwartz, Linlin Chen, No Sang Myung
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Abstract
The present invention relates to the electrodeposition of transition metal and rare earth alloys from aqueous solutions to form thin films. The present invention which comprises the preparation of suitable mixtures of water soluble compounds containing the desired transition metal (TM) and rare earth (RE) elements, establishing appropriate bath conditions and applying specific current densities across the bath solution to cause a film with the desired properties to be deposited on a target substrate.
Claims20
A composition for enhancing the aqueous electrodeposition of rare earth metals comprising:
- a water soluble salt of the rare earth metal, a water soluble salt of a transition metal, boric acid, and an amino acid.
A method for electrodepositing a metallic coating onto a metal substrate, said coating containing a rare earth metal comprising:
- placing an aqueous solution containing a water soluble salt of the rare earth metal, a water soluble salt of a transition metal, boric acid, and an amino acid into a plating bath,
- placing an anode and the substrate to be coated into the bath and connecting the anode and the substrate to a DC power supply, with the substrate acting as the cathode,
- adjusting the pH of the bath to a suitable operating level, and
- applying a direct current through the anode and substrate causing the rare earth and the transition metal to migrate to, and adhere to, the substrate.
Dependencies are inferred from the claim text.