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AssigneeSumitomo Electric Industries, Ltd.
InventorsChihiro Kawai, Takahiro Matsuura, Akira Yamakawa
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A porous ceramic film which is formed onto and bonded to an oxide layer provided on the surface of a porous base, the film composed of finely deposited particles comprising at least one compound including (a) at least one selected from the group consisting of Si, B and Al or the group consisting of the metals of the Groups IVa, Va and VIa and (b) at least one selected from the group consisting of C and N in which the particles are intertwined with each other and bonded to each other through the component of the oxide layer to form a three-dimensionally intertwined structure. This porous ceramic film is produced by forming the oxide layer on the base surface and then heating it to a temperature of at least of the liquid-phase formation temperature of the oxide layer in a gaseous atmosphere containing the above elements (a) and (b). The porous ceramic film has a high porosity, a good pressure resistance and a regulated pore size and is appropriate for a filter, a catalyst support, bioreactor or a structural material.
A highly porous ceramic film having good pressure resistance and a regulated pore size which is formed onto and bonded to an oxide layer provided on a surface of a base prior to film formation, the film composed of particles comprising at least one compound including (a) at least one member selected from the group consisting of Si, B and Al or the group consisting of the metals of the Groups IVa, Va, and VIa in the Periodic Table and (b) at least one member selected from the group consisting of C and N in which the particles are intertwined with each other and bonded to each other through a component of the oxide layer to form a three-dimensionally intertwined structure.
Dependencies are inferred from the claim text.