Dow Corning Corporation

Japan as Represented by Director General of Agency of Industrial Science

Fine Ceramics Research Association

Shin-Ichi Hirano

Shin-ichi Hirano

Ronald H Baney

Shinji Kondoh

Koichi Kikuta

The present invention provides a ceramic film with a variety of structures having one-dimensional through channels which can be utilized favorably in the separation of molecules or microparticles or as a support film for a catalyst with a large surface area or for a catalyst of high activity, and also provides a method for manufacturing this film efficiently and with good reproducibility, and the present invention relates to a ceramic film having one-dimensional through channels, which is a porous ceramic film having nanometer-size pores that go through one-dimensionally from one surface of the film to the other surface, characterized in that the porous ceramic film is formed on a substrate of glass, ceramic, or a heat-resistant metal; and relates to a method for manufacturing the above-mentioned ceramic film.

Mesoporous ceramic film with one dimensional through channels and

A method is disclosed for preparation of superconductive substances, and in particular, those comprising a rar earth element, barium (Ba), copper (Cu) and oxygen, having a composition represented by the general formula: LnBa.sub.2 Cu.sub.3 O.sub.7-.delta. in which Ln represents a rare earth element and .delta. has a value of about 0 to 0.5. The method includes forming a solution containing an organic compound of a rear earth element, an organic barium compound and an organic copper compound in an organic solvent, homogenizing the resulting solution, stripping the organic solvent from the homogenized solution by evaporation to give a precipitate and pyrolyzing the precipitate to obtain the superconductive substance. The precipitate may also be formed as fibers or films prior to pyrolysis.

Process for preparing ceramic superconductive substances

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Aichi, Japan

Shin-ichi Hirano