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US 2019/0292108 A1Published application
Porous material, cell structure, and method of producing porous material
AssigneeNGK Insulators, Ltd.
InventorsMika TSUBOI, Yunie Izumi, Takahiro Tomita
Life of this patent
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Abstract
A porous material includes aggregate particles and a binding material. In the aggregate particles, oxide films containing cristobalite are provided on surfaces of particle bodies that are silicon carbide particles or silicon nitride particles. The binding material binds the aggregate particles together in a state where pores are provided therein. The porous material contains at least one of copper, calcium, and nickel as an ancillary component.
Claims11
A porous material comprising:
- aggregate particles in which oxide films containing cristobalite are provided on surfaces of particle bodies that are silicon carbide particles or silicon nitride particles;
- and
- a binding material that binds said aggregate particles together in a state where pores are provided therein,
- wherein at least one of copper, calcium, and nickel is contained as an ancillary component.
1 more element
A method of producing a porous material, comprising:
- a) obtaining a compact by molding a mixture of an aggregate raw material, a raw material for a binding material, and a pore-forming material;
- b) obtaining a fired compact by firing said compact in an inert atmosphere;
- and
- c) obtaining a porous material by subjecting said fired compact to an oxidation treatment in an oxidizing atmosphere,
- wherein said aggregate raw material contains silicon carbide particles or silicon nitride particles, and
- said raw material for a binding material contains an ancillary component that is at least one of copper, calcium, and nickel.
3 more elements
A method of producing a porous material, comprising:
- a) obtaining a compact by molding a mixture of an aggregate raw material, a raw material for a binding material, and a pore-forming material;
- b) obtaining a fired compact by firing said compact in an inert atmosphere;
- and
- c) obtaining a porous material by subjecting said fired compact to an oxidation treatment in an oxidizing atmosphere,
- wherein said aggregate raw material contains silicon carbide particles or silicon nitride particles, and
- said raw material for a binding material contains either strontium or an ancillary component that is at least one of copper, calcium, and nickel, and further contains aluminum hydroxide.
3 more elements
Dependencies are inferred from the claim text.