Abstract: A thermal insulation member is directly or indirectly sandwiched between a first object and a second object and thereby suppresses or interrupts heat transfer between the first object and the second object. The thermal insulation member comprises: a first main surface opposed to the first object; and a second main surface positioned on the opposite side from the first main surface and opposed to the second object. The thermal insulation member has a porous structure of ceramic having pores. ZrO2 particles and different type material exist on surfaces of the ZrO2 particles form a skeleton of the porous structure. The different type material includes at least one selected out of SiO2, TiO2, La2O3, and Y2O3.

Abstract: An intermediate member is a member which is directly or indirectly sandwiched between a first object and a second object. The intermediate member includes a plate-like supporting member having a lower surface which is one main surface opposed to the first object and a plurality of ceramic blocks fixed on an upper surface which is the other main surface of the supporting member in a state of being separated from one another. Thus, in a state where the plurality of ceramic blocks are collectively held by the supporting member having relatively high shape retention, by disposing the intermediate member between the objects, it is possible to easily arrange the plurality of ceramic blocks between the objects with high positioning accuracy.

Abstract: A porous ceramic structure includes one sheet, and a plurality of porous ceramic particles bonded on the sheet. A gap d formed between adjacent ones of the porous ceramic particles is 10˜80 ?m.

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 porous ceramic structure has a porosity of 20% to 99%, and includes one principal surface and another principal surface opposite to the one principal surface. At least one cut is formed from the one principal surface toward the other principal surface. An aspect ratio of a divided portion divided by the cut is greater than or equal to 3.

Abstract: A porous ceramic particle has a porosity of 20% to 99%, and one principal surface of the porous ceramic particle is a mirror surface, and an aspect ratio thereof is greater than or equal to 3.

Abstract: A porous ceramic particle (16) has a pair of main surfaces (161, 162) in parallel with each other. An average porosity in a range (633) extending from one main surface (161) toward the other main surface (162) and having a thickness which is one fourth of a particle thickness that is a distance between the main surfaces is higher than that in a range (632) which is positioned in the center between the pair of main surfaces and has a thickness which is half of the particle thickness. The upper main surface (161) is a surface to be placed on an object. By limiting an area having a high porosity to the vicinity of the one main surface (161), it is possible to cause the porous ceramic particle (16) to have low thermal conductivity and low heat capacity and suppress a decrease in the mechanical strength.

Abstract: A porous plate-shaped filler of the present invention is a plate shape having an aspect ratio of 3 or more, a surface shape is one of a round shape, an oval and a round-corner polygonal shape, and its minimum length is from 0.1 to 50 ?m. Furthermore, a sectional shape is one of an arch shape, an elliptic shape, and a quadrangular shape in which at least a part of corners is rounded. Consequently, it is possible to obtain the heat insulation film in which the porous plate-shaped fillers 1 are easy to be laminated and the heat insulation effect improves.

Abstract: The porous plate-shaped filler aggregate includes a plurality of the porous plate-shaped fillers. The porous plate-shaped fillers have a uniform plate shape with an aspect ratio of 3 or more, a minimum length of 0.1 to 50 ?m, a porosity of 20 to 99%, and the deviation of the maximum length among a plurality of the porous plate-shaped fillers, which is obtained by the following formula, is 10% or less. Deviation of the maximum length (%)=standard deviation of the maximum length/average value of the maximum length×100 (Here, ‘maximum length’ is the longest length when the porous plate-shaped fillers are held between a pair of parallel planes.

Abstract: In a heat-insulation film, porous plate fillers are dispersed in a matrix to bond the porous plate fillers. The porous plate filler includes plates having an aspect ratio of 3 or more, a minimum length of 0.1 to 50 ?m and a porosity of 20 to 90%. In the heat-insulation film, a volume ratio between the porous plate fillers and the matrix is from 50:50 to 95:5. In the heat-insulation film in which the porous plate fillers are used, a length of a heat transfer path increases and a thermal conductivity can be decreased, as compared with a case where spherical or cubic fillers are used.

Abstract: An intermediate member is a member which is directly or indirectly sandwiched between a first object and a second object. The intermediate member includes a plate-like supporting member having a lower surface which is one main surface opposed to the first object and a plurality of ceramic blocks fixed on an upper surface which is the other main surface of the supporting member in a state of being separated from one another. Thus, in a state where the plurality of ceramic blocks are collectively held by the supporting member having relatively high shape retention, by disposing the intermediate member between the objects, it is possible to easily arrange the plurality of ceramic blocks between the objects with high positioning accuracy.

Abstract: A thermal insulation member is directly or indirectly sandwiched between a first object and a second object and thereby suppresses or interrupts heat transfer between the first object and the second object. The thermal insulation member comprises: a first main surface opposed to the first object; and a second main surface positioned on the opposite side from the first main surface and opposed to the second object. The thermal insulation member has a porous structure of ceramic having pores. ZrO2 particles and different type material exist on surfaces of the ZrO2 particles form a skeleton of the porous structure. The different type material includes at least one selected out of SiO2, TiO2, La2O3, and Y2O3.

Abstract: A porous plate-shaped filler is a plate shape having an aspect ratio of 3 or more, and has a minimum length of 0.1 to 50 ?m and a porosity of 20 to 90%. Furthermore, the porous plate-shaped filler 1 includes plate-shaped pores 2 having an aspect ratio of 1.5 or more. Consequently, in the porous plate-shaped filler, a thermal conductivity is low. The heat insulation film includes the porous plate-shaped filler, whereby a heat insulation effect of the heat insulation film can improve.

Abstract: Provided herein is porous material which includes, as a framework of a porous structure, ZrO2 particles and a dissimilar material present on the surfaces of the ZrO2 particles. The dissimilar material includes at least one oxide selected from a first group of oxides and at least one oxide selected from a second group of oxides, or both. The first group of oxides includes, but is not limited to, SiO2, TiO2, La2O3, Al2O3, SrCO3, Gd2O3, Nb2O5, Y2O3, and a complex oxide including two or more of these oxides. The second group of oxides includes, but is not limited to, SiO2, TiO2, La2O3, Al2O3, SrCO3, Gd203, Nb2O5, Y2O3, and a complex oxide including two or more of the oxides, and ZrO2.

Abstract: A porous ceramic particle includes a porous portion and a dense layer. The porous portion has a plate-like shape and a pair of main surfaces in parallel with each other. The dense layer has porosity lower than that of the porous portion and covers at least one main surface among the pair of main surfaces of the porous portion. A portion of a surface of the porous portion, which is other than the pair of main surfaces, is exposed from the dense layer. It is thereby possible to provide a porous ceramic particle of low thermal conductivity and low heat capacity.

Abstract: A porous ceramic structure has a porosity of 20% to 99%, and includes one principal surface and another principal surface opposite to the one principal surface. At least one cut is formed from the one principal surface toward the other principal surface. An aspect ratio of a divided portion divided by the cut is greater than or equal to 3.

Abstract: A porous ceramic particle has a porosity of 20% to 99%, and one principal surface of the porous ceramic particle is a mirror surface, and an aspect ratio thereof is greater than or equal to 3.

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 porous ceramic structure includes one sheet, and a plurality of porous ceramic particles bonded on the sheet. A gap d formed between adjacent ones of the porous ceramic particles is 10˜80 ?m.

Abstract: A porous ceramic structure includes one sheet, and a porous ceramic aggregate bonded on the sheet. The porous ceramic aggregate includes a plurality of porous ceramic particles.