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US 2010/0166149 A1Published application
Mechanism and x-ray tube apparatus
AssigneeHitachi Medical Corporation
InventorHidefumi Okamura
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AssigneeHitachi Medical Corporation
InventorHidefumi Okamura
Estimating the term…
A mechanism to which a liquid-repellent structure hard to be exfoliated is applied. The tip of each of microprojections has a generally spherical surface. When a liquid metal (8) comes into contact with such a surface, the liquid metal (8) cannot enter the spaces among microprojections and is supported by the surfaces of the tips only with point contact. Therefore, the liquid metal (8) neither wets the surface of the base material nor spread over the surface. The liquid-repellent surface (11) has a structure such that the liquid metal (8) is supported by point contact of the many microprojections and repelled by the surface (11), and does not wet the surface (11).
A mechanism having an non-wetting and liquid-repellent surface structure which repels liquid metal for sealing the liquid metal, characterized in that multiple microprojections which point contact the liquid metal are provided on a base material surface so as to hold surface tension of the liquid metal.
An X-ray tube device having an non-wetting and liquid-repellent structure which repels liquid metal to be applied to the boundary portion between a bearing gap and vacuum in a fluid slide bearing for rotary anode, characterized in that multi microprojections which point contact the liquid metal are provided on a base material surface so as to hold surface tension of the liquid metal.
A method for manufacturing an non-wetting and liquid-repelling surface which repels liquid metal, characterized in performing heat treatment to iron alloy including chrome in hydrogen atmosphere including water vapor with the heat higher than the annealing temperature of the iron alloy so as to make the surface of iron alloy non-wetting and liquid-repellent.
Dependencies are inferred from the claim text.