Preparation of thin ceramic films via an aqueous solution route

Details Preparation of thin ceramic films via an aqueous solution route Preparation of thin ceramic films via an aqueous solution route

1988-06-09

1989-11-14

Bueker, Richard

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

427 62, 427 63, 427226, 427168, B05D 302, B05D 506, B05D 512, C23C 1802

Patent

active

048807729

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.

REFERENCES:
patent: 2763569 (1956-09-01), Bradstreet et al.
Kawai et al "Formation of Y-B.sub.a -C.sub.u -O Superconducting Film by a Spray Pyrolysis Method", Jpn. J. Appl. Phys. vol, 26(10) Oct. 1987 L1740-L1742.

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