초록 ▼

A porous ceramic substrate structure (10) having an interior portion (12) formed with an outer surface (14) is porous to at least one selected gas (16). A first ceramic coating layer (18) is applied to the outer surface (14) of the ceramic substrate structure (10) in a suspension state. The first ce

A porous ceramic substrate structure (10) having an interior portion (12) formed with an outer surface (14) is porous to at least one selected gas (16). A first ceramic coating layer (18) is applied to the outer surface (14) of the ceramic substrate structure (10) in a suspension state. The first ceramic coating suspension (20) has a desired level of viscosity for application to the substrate and is formed with a ceramic electrolyte powder and at least one organic additive. A second ceramic coating layer (22) is applied to the outer surface (14) following application of the first coating (18). The second coating (22) is initially applied after the first coating (18) and in a suspension state. The ceramic layers (18 and 22) substantially prevent gas leakage through the outer surface (14).

대표청구항 ▼

1. A method of manufacturing a ceramic film for reducing leakage of a selected gas through an outer surface of a porous ceramic substrate structure having an interior portion formed with the outer surface; the substrate being porous to at least one selected gas comprising:applying a first ceramic co

1. A method of manufacturing a ceramic film for reducing leakage of a selected gas through an outer surface of a porous ceramic substrate structure having an interior portion formed with the outer surface; the substrate being porous to at least one selected gas comprising:applying a first ceramic coating layer to at least a portion of the outer surface of the ceramic substrate structure; the first ceramic coating being initially applied in a suspension state, the first ceramic coating suspension having a desired level of viscosity for substantially uniform application to the surface; and being formed with a ceramic electrolyte powder and at least one organic additive; and applying a second ceramic coating layer to at least a portion of the outer surface of the ceramic substrate structure following application of the first ceramic coating and subsequent to a drying process of the first ceramic coating; the second ceramic coating being initially applied subsequent to application of the first ceramic coating; the second ceramic coating being initially applied in a suspension state having a lower viscosity relative to the viscosity of the suspension used for the first coating. 2. The method of claim 1 further including applying a third ceramic coating layer to at least a portion of the outer surface of the ceramic substrate structure following application of the second ceramic coating; the third ceramic coating being initially applied subsequent to applying the second ceramic coating; the third ceramic coating being initially applied as a suspension having a lower viscosity relative to the viscosity of the second ceramic coating.3. The method of claim 1 wherein a vacuum is applied to the ceramic substrate structure on a side directionally opposite to the first ceramic coating in relation to the outer surface; the vacuum is formed during the application of the ceramic coating to the ceramic substrate structure while the ceramic coating is in a suspension state.4. The method of claim 1 wherein the first ceramic coating comprises toluene, ethanol, butyl benzyl phthalate, polyvinyl butyral, and a powder of Ce0.8Gd0.2O2(CGO).5. The method of claim 1 wherein the ceramic coating layers are applied to the ceramic substrate by dipping a portion of the ceramic substrate into the desired suspension.6. The method of claim 1 wherein the viscosity of the ceramic coating suspension is in the range of 50-200 cPs.