Method of manufacturing ceramic filter
AssigneeNGK Insulators, Ltd.
InventorsManabu Isomura, Tatsuya Hishiki, Ichiro Wada
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Abstract
There is disclosed a method of manufacturing a thin and uniform ceramic filter formed with less membrane formation times and having less defects. A ceramic sol whose average pore diameter after the sol itself has been formed into a membrane is larger than that of a ceramic separation membrane and is 10 nm or less is brought into contact with the surface of a ceramic separation membrane having an average pore diameter of 0.5 to 10 nm, and the ceramic separation membrane having the ceramic sol is dried and then fired to repair a defect portion of the ceramic separation membrane.
Claims3
A method of manufacturing a ceramic filter, comprising:
- bringing, into contact with the surface of a ceramic separation membrane having an average pore diameter of 0.5 to 10 nm, a ceramic sol whose average pore diameter after the sol itself has been formed into a membrane is larger than that of the ceramic separation membrane and is 10 nm or less;
- and drying and then firing the ceramic separation membrane having the ceramic sol to repair a defect portion of the ceramic separation membrane.
Dependencies are inferred from the claim text.