| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for inexpensively manufacturing a porous ceramic body having a unidirectional through-hole. <P>SOLUTION: The unidirectional through-holes having a prescribed pore diameter are introduced into the porous ceramic body by mixing a pore forming agent of a high aspect ratio and having degradability in a ceramic plastic matter and performing molding of the ceramic plastic matter and orientation of the pore forming agent by extrusion molding, then performing drying and sintering. The through-holes having the desired pore diameter can be obtained by using, for example, carbon fibers as the pore forming agent and suitably selecting the diameter and length thereof. In extrusion, for example, a piston type extrusion molding machine comprising, for example, a body, a tapered section and a mouthpiece section is used for the extrusion molding and the extruder of the inner diameter of the mouthpiece section smaller than the inner diameter of the body can be used for the same. The obtained porous ceramic body having the unidirectional through-holes is used for, for example, a filter etc. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
