METHOD FOR MANUFACTURING PORE-GRADIENT POROUS BODY

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a pore-gradient porous body having a precisely controlled microstructure where the pore diameters and porosities are gradually changed.

SOLUTION: A specimen of a powder-shaped body or a porous body is set in a rotating body and a centrifugal force generated by a high-speed rotation of the rotating body and heating are simultaneously given to the specimen. By utilizing the resulting pressure-gradient generated in the specimen by the centrifugal force, the porous body having a pore-gradient structure, where the pore diameters and the porosities are gradually changed, is manufactured. The pore diameters and the porosities of the specimen can be estimated by a linear shrinkage calculated by formula (1). The pore-gradient porous body manufactured by the above method is also included.

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