Abstract: A support for an electric heating type catalyst, comprising: a honeycomb structure having partition walls that define a plurality of cells, each cell extending from a first end face to a second end face to form a fluid path for a fluid; and a pair of metal electrode portions in which one metal electrode portion of the pair of metal electrode portions is disposed on a side opposite to the other metal electrode portion across a center axis of the honeycomb structure; wherein one or both of the pair of metal electrode portions comprise at least one protruding portion, the protruding portion projecting toward the honeycomb structure side to abut against the honeycomb structure.
Abstract: The ceramic structure 10 includes a discoid ceramic base 12 and an electrode 14 buried in the ceramic base 12. The ceramic base 12 is a sintered body composed principally of alumina or a rare-earth metal oxide and has a thermal expansion coefficient of 7.5 to 9.5 ppm/K over the range of 40° C. to 1200° C. The electrode 14 is composed principally of metal ruthenium. The electrode 14 may be formed in the shape of a sheet. Alternatively, the electrode 14 may be patterned in the manner of a one-stroke sketch so as to extend over the entire cross section of the ceramic base 12.
Abstract: A method of synthesis for an aluminophosphate-based zeolite membrane includes a steps of preparing a mixed solution with a pH greater than or equal to 6 and less than or equal to 9 by mixing an acidic phosphorous source with an alkali source, a steps of preparing a starting material solution by adding and mixing an aluminum source to the prepared mixed solution, and a steps of synthesizing an aluminophosphate-based zeolite membrane by hydrothermally synthesizing the starting material solution.
Abstract: A honeycomb structure comprising a pillar-shaped honeycomb structure body, wherein the honeycomb structure body has at least one missing part, the average size of the missing part is such that the radial length on the end face of the honeycomb structure body is 0.8 to 8.0 mm, the perimeter along the rim of the end face of the honeycomb structure body is 0.8 to 41.0 mm, and the axial length in the extending direction of the cells of the honeycomb structure body is 0.1 to 32.0 mm, and a percentage of a ratio of total area of the missing part is 1.40% or less.
Abstract: An optical component includes a first substrate including a phosphor substrate and a second substrate including a translucent substrate and supporting the first substrate. The translucent substrate has a polycrystalline structure with orientation.
Abstract: There is provided a functional layer including a layered double hydroxide (LDH). The functional layer includes a first layer with a thickness of 0.10 ?m or more, the first layer being composed of fine LDH particles having a diameter of less than 0.05 ?m, and a second layer composed of large LDH particles having a mean particle diameter of 0.05 ?m or more, the second layer being an outermost layer provided on the first layer.
Abstract: A honeycomb filter includes a pillar-shaped honeycomb structure having porous partition walls placed, surrounding a plurality of cells which serve as fluid through channels extending from an inflow end face to an outflow end face; and porous plugging portions provided either at the ends on the inflow end face side of the cells or at the ends on the outflow end face side of the cells, wherein the plugging portions include plugging portions that have voids therein, and in the plugging portions having the voids, porosity including the voids as pores ranges from 68% to 83%.
Abstract: A process for producing a zeolite membrane composite includes a step of obtaining FAU-type seed crystals, a step of depositing the FAU-type seed crystals on a support, a step of forming an AFX-type zeolite membrane on the support by immersing the support in a raw material solution and growing an AFX-type zeolite from the FAU-type seed crystals by hydrothermal synthesis, and a step of removing a structure-directing agent from the AFX-type zeolite membrane. In this way, the AFX-type zeolite membrane can be provided.
Abstract: A composite substrate includes a supporting substrate and a functional substrate that are directly joined together, the supporting substrate being a sintered sialon body.
Abstract: A DDR-type zeolite seed crystal has an average particle diameter of less than or equal to 0.2 ?m, and an average aspect ratio of less than or equal to 1.3.
Abstract: The present invention relates to a transparent sealing member. A quartz glass transparent sealing member is used in an optical component having at least one optical element, and a mounting board on which the optical element is mounted, and constitutes, with the mounting board, a package that houses the optical element. The concentration of aluminum in a surface portion is higher than the concentration of aluminum in an inner portion.
Abstract: A honeycomb structure includes a pillar-shaped honeycomb structure body having a porous partition wall disposed to surround a plurality of cells, wherein a major component of the partition wall is cordierite, a porosity of the partition wall is 45 to 55%, an average pore diameter of the partition wall is 8 to 19 ?m, a cumulative pore volume of the partition wall is such that a pore volume ratio of the pores having a pore diameter larger than a thickness of the partition wall relative to an overall pore volume of the partition wall is 3.0% or less, and a pore volume ratio of the pores having a pore diameter of 10 ?m or less relative to the overall pore volume of the partition wall is 30% or more, and a pore diameter distribution of the partition wall is a unimodal distribution, or a multimodal distribution.
Abstract: A ceramic porous body comprising: skeleton portions; and pore portions formed between the skeleton portions, the pore portions being capable of allowing a fluid to flow therethrough. In the ceramic porous body, the pore portions satisfy the following equations (1) and (2) in a cross section parallel to a flow direction of the fluid; L1/L2?0.92??(1), and L1+L2?27 ?m??(2) in which L1 is an average length of the pore portions in the flow direction of the fluid; and L2 is an average length of the pore portions in a direction orthogonal to the flow direction of the fluid.
Abstract: A honeycomb filter includes a pillar-shaped honeycomb structure having porous partition walls provided, surrounding a plurality of cells which serve as fluid through channels extending from an inflow end face to an outflow end face, and porous plugging portions provided either at the ends on the inflow end face side or the outflow end face side of the cells, wherein the plugging portions are composed of a porous material, the honeycomb structure has a central region and a circumferential region, and a ratio of an area of the circumferential region with respect to that of the central region ranges from 0.1 to 0.5, porosity of a central plugging portion in the central region, is higher than that of a circumferential plugging portion in the circumferential region, and the porosity of the central plugging portion ranges from 76% to 85%, and that of the circumferential plugging portion from 60% to 75%.
Abstract: A ceramic membrane filter includes a porous substrate including cells through which a fluid flows, an intermediate membrane formed on the porous substrate, and a separation membrane formed on the intermediate membrane. In this ceramic membrane filter, the percentage of the number of cells having cracks with a size of 4 ?m or less relative to the total number of cells is 9% or less.
Abstract: A method for transferring a plurality of columnar honeycomb structures according to the present invention includes: subjecting first side surfaces of the plurality of columnar honeycomb structures to vacuum suction; and correctively transferring the plurality of the columnar honeycomb structures, optionally while supporting second side surfaces opposing to the first side surfaces of the plurality of columnar honeycomb structures by a supporting member.
Type:
Grant
Filed:
October 31, 2018
Date of Patent:
April 13, 2021
Assignee:
NGK Insulators, Ltd.
Inventors:
Chikashi Ihara, Masato Shimada, Shinya Yoshida
Abstract: A setter for firing in a plate which is used for firing a honeycomb formed body and interposed between the honeycomb formed body and a shelf plate, wherein the setter for firing has a setter lower surface section facing the shelf plate, the setter lower surface section including: a central region part formed by a region including a lower surface center of the setter lower surface section; and a peripheral region part formed by a peripheral region of the central region part, and the peripheral region part has at least four or more setter groove parts each having a recessed cross sectional shape and extending radially from the lower surface center respectively in a direction from a boundary with the central region part toward a setter outer circumferential section.
Abstract: A solid electrolyte is constituted by lithium phosphorus oxynitride (LiPON). A multiplication value obtained by multiplying a ratio of a peak intensity of nitrogen atoms having a single bond with one P atom and having a double bond with another P atom to a peak intensity of an N2 state in a Raman spectroscopy spectrum by a ratio of a content amount of N atoms to a content amount of P atoms is greater than or equal to 0.40.
Abstract: A honeycomb structure, including: a honeycomb structure body having a porous partition walls which are disposed to define a plurality of cells and a circumferential wall, wherein the partition walls are provided with protrusions which protrude to extend into the cells and are continuously disposed in an extending direction of the cells, the cells have a polygonal shape in a cross section orthogonal to the extending direction of the cells, the plurality of cells include a plurality of specific cells having at least one place where two sides each of which is provided with a different number of protrusions intersect each other, and in the cross section orthogonal to the extending direction of the cells, disposition directions of the shapes of the cells including the protrusions in the specific cells are different in one specific cell and other specific cells other than the one specific cell.