Ngk Insulators, Inc.

Kabushiki Kaisha Toyota Chuo Kenkyusho

Toyota Jidosha Kabushiki Kaisha

Takao Tani

Nobuo Kamiya

Hiroshi Kashiwagi

Kazumasa Takatori

Hiroaki Makino

Naoto Miyoshi

Akira Morikawa

Akihiko Suda

Oji Kuno

Miho Hatanaka

Shinji Tsuji

Tomio Suzuki

Masahiko Sugiyama

Nobuhiro Ishida

Akifumi Nishio

Jun Inoue

Daisaku Goto

Takaaki Hatanaka

Koichi Yamashita

Tsuguto Takeuchi

A method for identifying and separating a rare earth ion. The method includes bringing one or more rare earth ions into contact with a mineralization agent capable of mineralizing the rare earth ions, wherein the one or more rare earth ions are separated as rare earth minerals, based on a mineralization tendency of the mineralization agent with respect to a rare earth ion series.

Method for separation of rare earth ion

There is disclosed a method for preparing a honeycomb segment joined body in which a plurality of honeycomb segments are arranged in directions parallel to a first flat surface and a second flat surface of an installation reference jig to install the honeycomb segments in predetermined positions via a paste-like joining material on the installation reference jig by use of the installation reference jig having the first flat surface and the second flat surface forming a right angle therebetween, and then the joining material is dried and cured to join the plurality of honeycomb segments together. In the preparation method, in at least a part of a process of successively installing the plurality of honeycomb segments in the predetermined positions, when a new honeycomb segment is installed, at least a part of the installed honeycomb segments is pressurized and held in the predetermined positions so that the already installed honeycomb segments are not displaced.

Method of preparing honeycomb segment joined body

Composite oxide powder has a large specific surface area and a large pore volume even after a high-temperature durability test, without losing oxygen storage ability of a single metal oxide. In this composite oxide powder, a first metal oxide having oxygen storage ability is held as ultrafine particles in the form of islands by a second metal oxide which is different from the first metal oxide, pore volume is not less than 2 cc/g and the first metal oxide particles have a diameter of not more than 30 nm even after subjected to high temperature of 900&deg; C. or more. Since the first metal oxide particles are held in the form of islands by the second metal oxide particles, separated from each other and suppressed from contacting each other, the first metal oxide particles hardly grow granularly.

Composite oxide powder, catalyst and process for producing the same

In a method of producing a composite insulator having a core member, end fitting members fixed to both end portions of the core member, and an overcoat member including a sheath portion formed on an outer surface of the core member and shed members, the overcoat member and the end fitting member are connected by curing. Moreover, a clamping operation is performed or a packing member is used for preventing a flow of an overcoat forming material into a seal portion. In this manner, it is possible to improve a seal performance of a connection boundary between the end fitting member and the overcoat member.

Method of manufacturing composite insulator and packing member for use in same

A disclosed method of repairing a shed portion of a composite insulator having a core portion, a sheath portion arranged on an outer surface of the core portion, and a plurality of shed portions projected from the sheath portion, includes the steps of, (1) cutting out the shed portion having defects from the sheath portion while leaving the sheath portion, and connecting a new shed portion having the same shape as that of the cut out shed portion to the sheath portion at the cut out portion, or (2) cutting out partly the shed portion having defects, and connecting a repairing member to the cut out portion. Therefore, it is possible to perform the shed portion repairing operation without wasting the normal shed portions.

Method for repairing a damaged shed portion of a composite insulator

A catalyst support, a catalyst using the catalyst support and a process for producing the same are disclosed. For instance, the catalyst support includes a composite oxide powder produced by spraying and burning a W/O type emulsion, the W/O type emulsion including an aqueous solution dispersed in an organic solvent, the aqueous solution containing aluminum as a major component and at least one co-metallic element in addition to the aluminum. Thus, the catalyst support can be produced less expensively without using any expensive alkoxide. Further, due to the spraying and burning, the composite oxide powder is composed of porous hollow particles which have a very thin shell thickness of dozens of nanometers, and makes the catalyst support which is amorphous and exhibits a large specific surface area. Hence, the catalyst support can maintain the large specific surface area even after a high-temperature durability test. Furthermore, the composite oxide powder includes the co-metallic element which is composited in such a highly dispersed manner that the agglomerated sulfates are less likely to be produced. Therefore, the catalyst support is inhibited from being poisoned by sulfur.

Catalyst support and catalyst and process for producing the same

A method of detecting an overcoating rubber flowed in a space between a core member and a securing metal fitting of a polymer insulator having the core member, the overcoating arranged around the core member and the securing metal fitting fixed to at least one end of the core member, is disclosed. The method includes the steps of: applying a torque in a circumferential direction to the securing metal fitting, after forming the overcoating rubber but before fixing the securing metal fitting to the core member; deforming an index provided on a surface of the overcoating; and detecting whether the overcoating rubber is existent or not in the space between the securing metal member and the core member in response to a deforming extent indicated by the index.

Method of detecting overcoating rubber flowed in space between core member and securing metal fitting of polymer insulator

A method of forming a polymer insulator is disclosed. The improvement includes the steps of: setting a formed body, having a construction such that a pre-form material is arranged around a rod and end caps are arranged at both end portions of the rod, between an upper die and a lower die, each die having cavities for forming sheds and sheath portions of the polymer insulator; and forming the sheds and the sheath portions of the polymer insulator by means of a compression forming by connecting the upper die and the lower die with compression pressure; wherein the end cap has a shape such that it is accommodated in the cavity for a shed formation.

Method of forming polymer insulator

The present invention provides a hollow oxide particle including a shell wall constituting a hollow room, and the shell wall has a thickness of 20 nm or less. The shell wall may be mainly composed from at least one selected from the group consisting of alumina, spinel, iron oxides, yttrium oxides, and titanium oxides. A process for producing the hollow oxide particle comprises the steps of: forming a Water in Oil (W/O) type emulsion including aqueous microspheres having a each diameter of 100 nm or more, by adding an organic solvent to an aqueous solution dissolving and/or suspending at least one of metal salts and metal compounds; and forming the hollow oxide particle by atomizing the Water in Oil (W/O) type emulsion to burn. When the hollow oxide particle is brought into contact with a water-containing solution, a surface of the shell wall may have a minutely irregular surface.

Hollow oxide particle and process for producing the same

A piezoelectric material includes a PZT ceramic, and a noble metal component. The noble metal component is added to the PZT ceramic in an amount of 0.35 parts by volume or more with respect to 100 parts by volume of the PZT ceramic, and is at least one element selected from the group consisting of Ru, Rh, Pd, Os, Ir, Pt and Au, or is an alloy of silver (Ag) and the noble metal element. A piezoelectric element includes a pair of external electrodes, at least a pair of piezoelectric layers, and a conductive layer. The piezoelectric layers are formed of the PZT ceramic, and are disposed between the external electrodes. The conductive layer is formed of the noble metal component, and is insulated from the external electrodes. The piezoelectric layers and the conductive layer are formed lamellarly, and are laminated alternately in a direction connecting the external electrodes.

Piezoelectric material and piezoelectric element

A disclosed method of repairing a shed portion of a composite insulator having a core portion, a sheath portion arranged on an outer surface of the core portion, and a plurality of shed portions projected from the sheath portion, includes the steps of, (1) cutting out the shed portion having defects from a portion thereof adjacent to the sheath portion, and connecting a new shed portion having the same shape as that of the cut out shed portion to the sheath portion at the cut out portion, or (2) cutting out partly said shed portion having defects, and connecting a repairing member to said cut out portion. Therefore, it is possible to perform the shed portion repairing operation without wasting the normal shed portions.

Method of repairing shed portion of composite insulator

This invention provides a piezoelectric ceramic composition having large field-induced strain under high compressive stress, small temperature dependence of strain, and high energy conversion efficiency even at high temperatures. The composition is represented by;

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Aisai, Japan

Takao Tani