公开(公告)号：US20210299604A1

公开(公告)日：2021-09-30

申请号：US17168515

申请日：2021-02-05

Applicant: NGK INSULATORS, LTD.

Inventor： Takayuki KANETAKE ,  Shingo TOKUDA ,  Shuji UEDA

IPC: B01D46/24 ,  B01D39/20 ,  F01N3/022

Abstract: A ceramic filter having a pillar-shaped honeycomb structure, wherein when observing a plurality of pores from a surface of partition walls with a laser microscope and plotting an equivalent circle diameter (μm) of each pore on an X-axis and a pore depth (μm) of each pore on a Y-axis on a two-dimensional coordinate system, a slope of a regression line (y/x) obtained by a least squares method in a range of 20≤x≤40 is 0 to 0.20, an average value of the pore depth of the plurality of pores is 2.5 μm to 5.0 μm, and a number density of the plurality of pores is 600/mm2 to 2450/mm2.

公开(公告)号：US20200039891A1

公开(公告)日：2020-02-06

申请号：US16506133

申请日：2019-07-09

Applicant: NGK INSULATORS, LTD.

Inventor： Shingo TOKUDA ,  Shuji Ueda ,  Takayuki Kanetake

IPC: C04B38/00 ,  C04B35/80

Abstract: A method for producing a honeycomb structure, the method comprising the steps of: kneading a forming raw material containing a cordierite forming material and then forming it to produce a honeycomb formed body; and firing the honeycomb formed body to provide a honeycomb structure. In the producing method, from 0.1 to 6.0 parts by mass of a magnesium silicate mineral having a 2:1 ribbon type structure per 100 parts by mass of the cordierite forming material is added to the forming raw material.