Hydrogen-permeable structure and method of manufacturing the same
AssigneeSumitomo Electric Industries, Ltd.
InventorsTakashi Uemura, Kentaro Yoshida, Nobuyuki Okuda, Takeshi Hikata
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Abstract
A hydrogen permeable structure includes a base material (1) including porous ceramic, and a hydrogen permeable film (2) formed on the base material (1), including palladium (Pd) and at least one element other than palladium and having an amount of hydrogen dissolution at a prescribed temperature smaller than that of palladium alone. The hydrogen permeable film (2) is formed on the surface of the porous ceramic base by a physical vapor deposition technique after any pin holes in the surface of the base have been filled with a porous oxide material.
Claims9
A hydrogen permeable structure comprising a base made of a material including a porous ceramic, said base having a base surface with at least one pin hole in said base surface, a porous oxide material filling said at least one pin hole thereby making said base surface plane, a hydrogen permeable film including palladium and at least one element other than palladium on said plane base surface, said hydrogen permeable film having, at a prescribed temperature, an amount of hydrogen dissolution which is smaller than an amount of hydrogen dissolution in palladium alone at said prescribed temperature.
A method for manufacturing a hydrogen permeable structure, said method comprising the following steps:
- a) producing a base of a material including porous ceramic material, said base having a base surface with at least one hole in said base surface,
- b) filling said at least one hole in said base surface with a porous oxide material to thereby make said base a surface plane, and
- c) forming on said plane base surface a hydrogen permeable film made of a film material including palladium and at least one element other than palladium, said film material having, at a prescribed temperature, an amount of hydrogen dissolution that is smaller than an amount of hydrogen dissolution in palladium alone at said prescribed temperature.
A method for manufacturing a hydrogen permeable structure, said method comprising the following steps:
- a) producing a base of a material including porous ceramic material having a base surface,
- b) vapor depositing on said base surface a hydrogen permeable film made of a film material including palladium and at least one element other than palladium, said film material having, at a prescribed temperature, an amount of hydrogen dissolution that is smaller than an amount of hydrogen dissolution in palladium alone at said prescribed temperature, and
- c) performing said step b) in a vacuum atmosphere of 13.3 Pa at the most and by applying a potential difference of at least 400 V between said base and a raw material which provides said film material.
Dependencies are inferred from the claim text.