US 11,986,812 B2
Honeycomb structure and electric heating support using the honeycomb structure
Makoto Hamazaki, Nagoya (JP); Takayuki Inoue, Nagoya (JP); and Kohei Yamada, Nagoya (JP)
Assigned to NGK INSULATORS, LTD., Nagoya (JP)
Filed by NGK INSULATORS, LTD., Nagoya (JP)
Filed on Mar. 11, 2022, as Appl. No. 17/654,406.
Claims priority of application No. 2021-045377 (JP), filed on Mar. 19, 2021; and application No. 2022-001686 (JP), filed on Jan. 7, 2022.
Prior Publication US 2022/0297105 A1, Sep. 22, 2022
Int. Cl. B01J 35/56 (2024.01); B01D 53/94 (2006.01); B01J 21/08 (2006.01); B01J 27/224 (2006.01)
CPC B01J 35/56 (2024.01) [B01J 21/08 (2013.01); B01J 27/224 (2013.01); B01D 53/94 (2013.01); B01D 2255/9155 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An electric heating support, comprising:
a honeycomb structure comprising partition walls defining cells each extending from a first end surface of the honeycomb structure to a second end surface thereof to form a fluid flow path; and an outer peripheral wall,
a pair of electrode layers arranged on an outer surface of the outer peripheral wall so as to be opposed to each other across central axis of the honeycomb structure; and
a pair of metal terminals connected to the pair of electrode layers;
wherein the partition walls and the outer peripheral wall are each formed of ceramics containing silicon carbide and metal silicon, and
wherein a surface of the metal silicon has formed thereon an oxide film having a thickness of from 0.1 μm to 5.0 μm.