Back to results
US 2016/0096777 A1Published application
Honeycomb structural body and method for manufacturing the same
AssigneeNGK Insulators, Ltd.
InventorsYunie IZUMI, Yoshimasa KOBAYASHI
Life of this patent
Estimating the term…
Abstract
A honeycomb structural body 40 includes: a partition wall 48 formed of a porous ceramic which forms and defines a plurality of cells 47 each functioning as a flow path of a fluid and extending from one end surface to the other end surface; and an outer circumference wall 49 formed along the outermost circumference, where an oxide ceramic containing a Fe3O4 phase in which a solute component capable of forming a spinel-type oxide with Fe is solid-dissolved is formed.
Claims17
A honeycomb structural body comprising:
- a partition wall formed of a porous ceramic which forms and defines a plurality of cells each functioning as a flow path of a fluid and extending from one end surface to the other end surface;
- and an outer circumference wall formed along the outermost circumference,
- wherein an oxide ceramic containing a Fe3O4 phase in which a solute component capable of forming a spinel-type oxide with Fe is solid-dissolved is formed.
A honeycomb structural body comprising:
- a partition wall formed of a porous ceramic which forms and defines a plurality of cells each functioning as a flow path of a fluid and extending from one end surface to the other end surface;
- and an outer circumference wall formed along the outermost circumference,
- wherein an electrode formed of an oxide ceramic containing a Fe3O4 phase in which a solute component capable of forming a spinel-type oxide with Fe is solid-dissolved is formed on an outer surface of the honeycomb structural body so that the ratio of a length L1 of the electrode to a total length L of the honeycomb structural body in the flow path direction is in a range of 0.1 to 1 and the ratio of a length X1 of the electrode to an outer circumference length X of the surface of the honeycomb structural body perpendicular to the flow path is in a range of 0.02 to 0.3.
A method for manufacturing a honeycomb structural body comprising:
- a partition wall formed of a porous ceramic which forms and defines a plurality of cells each functioning as a flow path of a fluid and extending from one end surface to the other end surface;
- and an outer circumference wall formed along the outermost circumference, the method comprising:
- a forming step of, by using a raw material powder including a Fe raw material powder which contains at least one of a Fe metal powder and a Fe oxide powder and a solute component powder which contains a solute component capable of forming a spinel-type oxide with Fe, forming an oxide ceramic layer containing a Fe3O4 phase in which the solute component is solid-dissolved for the honeycomb structural body.
Dependencies are inferred from the claim text.