Preparation of thin ceramic films via an aqueous solution route
AssigneeBattelle Memorial Institute
InventorsLarry R. Pederson, Lawrence A. Chick, Gregory J. Exarhos
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Abstract
A new chemical method of forming thin ceramic films has been developed. An aqueous solution of metal nitrates or other soluble metal salts and a low molecular weight amino acid is coated onto a substrate and pyrolyzed. The amino acid serves to prevent precipitation of individual solution components, forming a very viscous, glass-like material as excess water is evaporated. Using metal nitrates and glycine, the method has been demonstrated for zirconia with various levels of yttria stabilization, for lanthanum-strontium chromites, and for yttrium-barium-copper oxide superconductors on various substrates.
Claims7
A method of forming oxide ceramic films, which comprises use of an aqueous solution of soluble metal salts and a low molecular weight amino acid, coating said solution onto a substrate, and pyrolyzing said film.
Dependencies are inferred from the claim text.