Honeycomb structure and manufacturing method of honeycomb structure
AssigneeNGK Insulators, Ltd.
InventorsMitsuharu Ono, Shuji Ueda
Life of this patent
Estimating the term…
Abstract
A honeycomb structure includes a cordierite component, and has partition walls defining a plurality of cells which extend from one end face to the other end face and form through channels for a fluid, a thermal expansion coefficient in a central axis direction is 1.2 ppm/K or more and 3.5 ppm/K or less in a temperature change of 40° C. to 800° C., and a thermal expansion coefficient in a cross-sectional direction orthogonal to the central axis direction is 0.8 ppm/K or more and 2.5 ppm/K or less in the temperature range of 40° C. to 800° C.
Claims6
A honeycomb structure including a cordierite component and comprising partition walls defining a plurality of cells which extend from one end face to the other end face and become through channels for a fluid,
- wherein an average thermal expansion coefficient of the honeycomb structure in a central axis direction is 1.2 ppm/K or more and 3.5 ppm/K or less in a temperature range of 40° C. to 800° C.,
- an average thermal expansion coefficient in a cross-sectional direction orthogonal to the central axis direction is 0.8 ppm/K or more and 2.5 ppm/K or less in the temperature range of 40° C. to 800° C., and
- the average thermal expansion coefficient in the cross-sectional direction orthogonal to the central axis direction is at least 0.3 ppm/K lower than the average thermal expansion coefficient in the central axis direction.
Dependencies are inferred from the claim text.