公开(公告)号：US10421213B2

公开(公告)日：2019-09-24

申请号：US15471327

申请日：2017-03-28

Applicant: NGK INSULATORS, LTD.

Inventor： Takafumi Kimata ,  Kenichi Hidaka ,  Yoshio Kikuchi ,  Masaki Ishikawa ,  Kisuke Yamamoto ,  Kenji Morimoto

IPC: B28B3/26 ,  B28B11/16 ,  B28B3/20

Abstract: A ceramic formed body extrusion method for forming a ceramic formed body having a wall-shaped or plate-shaped formed portion by using an extrusion die provided with a slit for extrusion of a ceramic formed body from a raw material for forming, the slit including a slit former stage unit located on an upstream side in an extrusion direction in the extrusion and a slit latter stage unit located on a downstream side in the extrusion direction, the slit latter stage unit having a width of three to 27 times a width of the slit former stage unit, and by extruding a raw material containing a first particle having an aspect ratio of two or more and less than 300 such that the raw material passes though the slit former stage unit of the extrusion die and then passes through the slit latter stage unit.

公开(公告)号：US10208878B2

公开(公告)日：2019-02-19

申请号：US15465659

申请日：2017-03-22

Applicant: NGK INSULATORS, LTD.

Inventor： Yoshimasa Kobayashi ,  Kisuke Yamamoto ,  Yunie Izumi ,  Takashi Noro

IPC: C04B37/00 ,  F16L41/02 ,  C04B37/02

Abstract: A joined body 10 includes a ceramic body 12, a metal member 14, and a joint portion 15 that joins the ceramic body 12 and the metal member 14 together. The joint portion 15 includes a first joint layer 16 joined to the ceramic body 12 and a second joint layer 18 joined to the metal member 14. The first joint layer 16 is disposed on the ceramic body 12 side and contains an alloy that contains Fe and Cr as main components, and a compound having a thermal expansion coefficient of 4.0×10−6 (/° C.) or lower is dispersed in the first joint layer 16. The second joint layer 18 is disposed on the metal member 14 side, contains an alloy that contains Fe and Cr as main components, and has a larger thermal expansion coefficient than the first joint layer 16.

公开(公告)号：US11773762B2

公开(公告)日：2023-10-03

申请号：US17644369

申请日：2021-12-15

Applicant: NGK INSULATORS, LTD.

Inventor： Yusuke Oshita ,  Kisuke Yamamoto ,  Takahiro Tomita

IPC: F01N3/20 ,  C03C3/064 ,  B01J35/04 ,  B01D53/94 ,  F01N3/28 ,  F01N13/14 ,  F01N13/10

CPC classification number: F01N3/2026 ,  B01D53/94 ,  B01J35/04 ,  C03C3/064 ,  F01N3/2853 ,  F01N3/2857 ,  F01N3/2864 ,  F01N3/2871 ,  F01N13/102 ,  F01N13/14 ,  F01N13/148 ,  F01N2260/08 ,  F01N2330/04 ,  F01N2330/10 ,  F01N2330/102 ,  F01N2510/02

Abstract: A tubular member for an exhaust gas treatment device according to at least one embodiment of the present invention includes: a tubular main body made of a metal; and an insulating layer formed at least on an inner peripheral surface of the tubular main body. The insulating layer contains glass containing a crystalline substance, and the insulating layer has a porosity of from 1% to 12%.

公开(公告)号：US11613470B2

公开(公告)日：2023-03-28

申请号：US16885654

申请日：2020-05-28

Applicant: NGK INSULATORS, LTD.

Inventor： Takafumi Kimata ,  Soichiro Aoyagi ,  Kisuke Yamamoto

IPC: C01B32/956 ,  C04B35/565 ,  C04B111/00

Abstract: A SiC powder containing 70% by mass or more of a β-SiC, wherein in a volume-based cumulative particle size distribution measured by a laser diffraction method, a D50 is 8 to 35 μm and a D10 is 5 μm or more.

公开(公告)号：US10596722B2

公开(公告)日：2020-03-24

申请号：US16526011

申请日：2019-07-30

Applicant: NGK Insulators, Ltd.

Inventor： Takafumi Kimata ,  Kenichi Hidaka ,  Yoshio Kikuchi ,  Masaki Ishikawa ,  Kisuke Yamamoto ,  Kenji Morimoto

IPC: B28B3/26 ,  B28B11/16 ,  B28B3/20

Abstract: A ceramic formed body extrusion method for forming a ceramic formed body having a wall-shaped or plate-shaped formed portion by using an extrusion die provided with a slit for extrusion of a ceramic formed body from a raw material for forming, the slit including a slit former stage unit located on an upstream side in an extrusion direction in the extrusion and a slit latter stage unit located on a downstream side in the extrusion direction, the slit latter stage unit having a width of three to 27 times a width of the slit former stage unit, and by extruding a raw material containing a first particle having an aspect ratio of two or more and less than 300 such that the raw material passes though the slit former stage unit of the extrusion die and then passes through the slit latter stage unit.