Porous ceramics and method for producing porous ceramics
AssigneesChiba Institute of Technology, Daio Paper Corporation
InventorsKazuaki Hashimoto, Junya Okawa, Hiroto Sasaki
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Abstract
Porous ceramics that meet the demand for bone substitute materials and the like are provided. Solution is provided by porous ceramics and a method for producing the porous ceramics, which are ceramics having pores, the pores including open pores and closed pores, the open pores including a plurality of large-diameter open pores having a pore size within a range of 20 to 600 μm and a plurality of micro-diameter open pores having a pore size within a range of 1.0 μm or smaller, wherein the large-diameter open pores are distributed substantially uniformly all over the ceramics.
Claims2
A method for producing porous ceramics, comprising:
- mixing a ceramic raw material and a foaming aid to obtain a mixture,
- adding a foaming agent to the mixture to form a foamed body, and
- sintering the foamed body to obtain ceramics having pores,
- wherein the foaming aid is at least one of cellulose fibers having an average fiber width of 0.5 to 50 μm and cellulose nanofibers,
- wherein the pores include open pores and closed pores, the open pores including a plurality of large-diameter open pores having a pore size within a range of 20 to 600 μm and a plurality of micro-diameter open pores having a pore size within a range of 1.0 μm or smaller, and
- wherein the open pores account for 80% or more of the pores.
Dependencies are inferred from the claim text.