Abstract: A first transparent sealing member is used in a package accommodating at least one optical element, and is attached to a mounting substrate having a mounting surface for the optical element. In the first transparent sealing member, at least one corner part among a plurality of corner parts configured by a surface facing the mounting substrate and a surface along the mounting surface of the mounting substrate has a curved shape, and punctiform minute recessed parts are formed on the surface of the curved shape. The average presence frequency of the minute recessed parts is 100,000 to 3,000,000 inclusive per 1 mm2.

Abstract: The honeycomb structure includes a pillar-shaped honeycomb structure body having porous partition walls, as to the honeycomb structure body, in a plane perpendicular to a cell extending direction, a cell structure of a central cell structure differs from a cell structure of a circumferential cell structure, and in the plane, a geometric center of gravity of the honeycomb structure body exists at a position which is away from a geometric center of gravity of the central cell structure, and a distance between the respective centers of gravity is larger than a length of a half of a cell pitch of an outermost circumferential cell structure including complete cells formed at an outermost circumference of the honeycomb structure body.

Abstract: The honeycomb structure body has a dense part at a part in axial direction including a center region of the inflow end face, the dense part having a change ratio of porosity calculated by the following Expression (1) that is 2 to 8%, and has an outside-diameter increasing part, and the honeycomb structure body has a change ratio of average diameter calculated by the following Expression (2) that is 0.2 to 3%, (1?Px/Py)×100, ??Expression (1): in Expression (1), Px denotes the porosity (%) at the center region of the inflow end face, and Py denotes the porosity (%) of a circumferential region of the inflow end face. (1?Dx/Dy)×100, ??Expression (2): in Expression (2), Dx denotes the average diameter (mm) of the inflow end face, and Dy denotes the average diameter (mm) of the outflow end face.

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.

Abstract: A honeycomb structure includes a pillar-shaped honeycomb structure body having a porous partition wall. The honeycomb structure body includes a plurality of cells defined by the partition wall so as to extend from a first end face to a second end face of the honeycomb structure body, the partition wall is formed by a porous body including a silicon phase as a main phase and an oxide, and the oxide includes a first oxide made of an alkali earth metal oxide, Al2O3, and SiO2.

Abstract: A honeycomb structure has a pillar-shaped honeycomb structure body having porous partition walls which defines cells which forms a passage of liquid extended from an inflow end face toward an outflow end face, a circumferential wall arranged to surround a circumference of the partition walls. The honeycomb structure body has an outermost circumference cell structure including a complete cell arranged at the outermost circumference of the honeycomb structure body, a center cell structure formed by the cells arranged at a center part at an inner side to the outermost circumference cell structure, and a boundary wall arranged at a boundary part between the outermost circumference cell structure and the center cell structure. The outermost circumference cell structure and the center cell structure are formed as different structures to each other, and a thickness of the boundary wall is set to be thicker than a thickness of the circumferential wall.

Abstract: A manufacturing method of a honeycomb structure includes a forming step of preparing a forming raw material containing a cordierite forming material and an inorganic binder, and kneading and forming the prepared forming raw material to have a honeycomb shape; and a firing step of firing the prepared formed body. In the forming step, as the inorganic binder, smectite is used in which at least parts of interlayer metal cations are ion-exchanged with non-metal cations. In the smectite, a total amount of sodium to be contained in the smectite is 1.6 mass % or less in terms of oxides to 100 mass % of the smectite. A content ratio of the smectite in the forming raw material is 0.5 parts by mass or more and 4.0 parts by mass or less to 100 parts by mass of the cordierite forming material.

Abstract: A positive electrode is configured by plurality of mutually bonded primary particles respectively composed of a lithium composite oxide having a layered rock-salt structure. An average orientation angle of the plurality of primary particles relative to a plate face direction parallel to a plate face is more than 0° and less than or equal to 30°. An aggregate surface area of primary particles that have an aspect ratio of greater than or equal to 4 is greater than or equal to 70% relative to a total area of the plurality of primary particles, in cross section.

Abstract: A method of applying a circumferential coating material on a circumferential surface of a ceramic honeycomb structure to form a circumferential coat layer. The method includes vertically aligning the longitudinal axis of the ceramic honeycomb structure, rotating the ceramic honeycomb structure around the vertically-aligned longitudinal axis, and applying the circumferential coating material on the circumferential surface of the rotating honeycomb structure at a discharge speed of 50 to 120 mm/s, calculated by Discharge speed V [mm/s]=Supplied amount q [g/s] of circumferential coating material÷(Density ? [g/mm3] of circumferential coating material×Area S [mm2] of discharge opening).

Abstract: A member for a semiconductor manufacturing apparatus according to the present invention is a member that is to be joined to an aluminum nitride base member. The member is composed of a composite material including principal constituent phases that are aluminum nitride and a pseudopolymorph of aluminum nitride which includes silicon, aluminum, oxygen, and nitrogen. The pseudopolymorph of aluminum nitride has at least one periodic structure selected from a 27R phase and a 21R phase or an X-ray diffraction peak at least at 2?=59.8° to 60.8°. The composite material has a thermal conductivity of 50 W/mK or less at room temperature.

Abstract: A method for manufacturing a zeolite membrane structure includes a step of forming a first zeolite membrane on a porous support by hydrothermal synthesis in a state in which the porous support is immersed in a first zeolite membrane formation solution, a step of immersing the porous support formed the first zeolite membrane for greater than or equal to 5 minutes in a second zeolite membrane formation solution at greater than or equal to 10 degrees C. and less than or equal to 70 degrees C. and greater than or equal to pH 10, and a step of forming a second zeolite membrane on the first zeolite membrane by hydrothermal synthesis in a state in which the porous support formed the first zeolite membrane is immersed in the second zeolite membrane formation solution. The first zeolite membrane and the second zeolite membrane share at least one composite building unit constituting a framework structure.

Abstract: A positive electrode is configured by a plurality of mutually bonded primary particles respectively composed of a lithium composite oxide having a layered rock-salt structure. An average orientation angle of the plurality of primary particles relative to a plate face direction parallel to a plate face is more than 0° and less than or equal to 30°. An aggregate area of primary particles that have an orientation angle relative to the plate face direction of more than 0° and less than or equal to 30° is greater than or equal to 70% relative to a total area of the plurality of primary particles, in a cross section.

Abstract: The honeycomb structure body has a dense part having a change ratio of porosity calculated by the following Expression (1) that is 1 to 5%. The honeycomb structure body also has an outside-diameter decreasing part in which the outside diameter decreases from the inflow end face to the outflow end face. The honeycomb structure body has a change ratio of average diameter calculated by the following Expression (2) that is 0.2 to 3%. (1?Px/Py)×100,??Expression (1): in Expression (1), Px denotes the porosity (%) at the center region of the outflow end face, and Py denotes the porosity (%) of a circumferential region of the outflow end face other than the center region. (1?Dx/Dy)×100,??Expression (2): in Expression (2), Dx denotes the average diameter (mm) of the outflow end face, and Dy denotes the average diameter (mm) of the inflow end face.

Abstract: A package comprises an airtight container having an oxygen permeability of less than or equal to 15 ml/m2dMPa and water vapor permeability of less than or equal to 2 g/m2d, and a sub-nano membrane structure accommodated in the airtight container. The sub-nano membrane structure having a porous support and a sub-nano membrane. The sub-nano membrane formed on the porous support and having an average pore diameter of less than or equal to 1 nm.

Abstract: A heat exchange member which does not easily suffer from breakage due to thermal stress by relaxing the thermal stress. The heat exchange member is provided with a honeycomb structure and a covering member. The outer peripheral wall of the honeycomb structure has at least one slit. The covering member covers the honeycomb structure so that the heat exchange can be carried out between a first fluid and a second fluid. The heat exchange member performs heat exchange by means of the outer peripheral wall of the honeycomb structure and the covering member in the state where the first fluid passing through the cells and the second fluid passing through the outside of the covering member are not mixed with each other.

Abstract: A heater part of a planar sensor element includes: a heater element containing Pt; an insulating layer covering the heater element; and a heater electrode located on a main surface of the sensor element to be exposed. A portion of the heater part other than the heater electrode is buried in a base part formed of a solid electrolyte. The insulating layer at least contains MgO, MgAl2O4, and Mg4Nb2O9 in a weight percentage of 97 wt % to 100 wt % in total. MgO, MgAl2O4, and Mg4Nb2O9 are contained in weight percentages of 30 wt % to 60 wt %, 30 wt % to 60 wt %, and 0.5 wt % to 15 wt %, respectively. The insulating layer has a porosity of 4% or less.

Abstract: A heat exchanger, including: a columnar honeycomb structure having cells partitioned by partition walls composed of ceramics, each cell penetrating from a first end to a second end to form a flow path for a first fluid; an inner tubular member fitted to an outer peripheral surface of the honeycomb structure to circumferentially cover that surface; a spacer directly and circumferentially covering an outer peripheral surface of the inner tubular member as well as indirectly and circumferentially covering the outer peripheral surface of the honeycomb structure; and an outer tubular member directly and circumferentially covering the spacer; wherein the spacer has a three-dimensional structure that allows flow of a second fluid therein and suppresses movement of bubbles in the second fluid; and wherein at least one opening part between the inner tubular member and the outer tubular member forms a gate of the spacer for the second fluid.

Abstract: A porous ceramic structure has a porous ceramic aggregate configured from a plurality of porous ceramic particles, and the ratio of the number of corners at locations where two other porous ceramic particles are facing a corner of a porous ceramic particle with respect to the number of corners of the porous ceramic particles included in the porous ceramic aggregate is 80% or greater.

Abstract: A honeycomb structure includes: a honeycomb structure body including a plurality of cells; and a plugging portion to alternately plug open end parts of the plurality of cells on one side as an inflow side of the exhaust gas and open end parts on the other side as an outflow side of the exhaust gas. The partition wall is loaded, on the side of the outflow cells, with an oxidation catalyst made of a transition metal oxide to oxidize NO gas or an oxidation catalyst made of a transition metal oxide loaded at CeO2 to oxidize NO gas. The partition wall has porosity of 70% or less, the oxidation catalyst has a particle diameter of more than 1 ?m and less than 50.0 ?m, and the loading amount of the oxidation catalyst is 5.0 g/L or more and 50 g/L or less.

Abstract: A honeycomb filter includes a pillar-shaped honeycomb substrate and a plugging portion provided at an end portion on either an inflow or outflow end face side of cells, wherein, in a section orthogonal to the cell extending direction, the shapes of an inflow cell having the plugging portion and an outflow cell having the plugging portion are hexagonal. In the plurality of cells, a plurality of inflow cells surround one outflow cell such that one side of the inflow cell and one side of the outflow cell adjacent to the inflow cell are parallel. The partition wall includes a first partition wall and a second partition wall, at least one of the first partition walls is configured such that a ratio of a thickness of the second partition wall to the first partition wall is 1.0 to 2.5, and a total open frontal area is 35% to 95%.