Toyota Jidosha Kabushiki Kaisha

Nakagawa Sangyo Co., Ltd.

Kochi University

Toyota Motor Corporation

Toyoda Jidosha Kabushiki Kaisha

Tokyo Diamond Tools Mfg. Co., Ltd.

National University Corporation Kochi University

Sumio Kamiya

Libo Zhou

Hironori Sasaki

Hiroshi Eda

Hisao Iwase

Noriaki Nakagawa

Tetsuya Nagaike

Rentaro Mori

Kazumichi Yanagisawa

Noboru Otake

Wuxing Zhang

Tomohiro Miwa

Tatsuo Shou

Yukinobu Kato

Hirotaka Sakakibara

Tomoaki Shinma

Yuji Yoshida

Yoshiaki Tashiro

Kazutoshi Wakatsuki

Koji Yamada

Mamoru Ishikiriyama

Masaru Ishii

Takashi Ito

Yasushi Takahashi

Itsuo Kamiya

Masateru Nakamura

Izumi Takahashi

Hitoshi Ishii

Nobuaki Takazawa

Shigeru Ichikawa

Susumu Sarai

Tatsuya Ichikawa

Isao Tanaka

Kazumi Imamura

Makoto Hiei

Harumi Kimura

Syozi Miyazaki

Nan Li

Katsutoshi Noda

Yukihiro Kato

Masaaki Kenmochi

Teruki Yamashita

Satoko Inuzuka

Noriaki Nakagawa Sangyo Co Ltd Nakagawa

A joint structure jointing a ceramic member and a metal member is a joint structure jointing a ceramic member and a metal member that are provided in a device provided on a portion through which gas passes. The joint structure has a joint portion that joints the ceramic member and the metal member. The joint portion includes a glass portion made of a glass and a metal solder portion having higher corrosion resistance with respect to the gas than the glass. An area where the metal solder portion contacts to the gas is larger than an area where the glass portion contacts to the gas.

Ceramic member and joint structure of metal members

An electrically-heated catalytic converter includes: a substrate made of ceramic, the substrate including a catalyst coated layer; electrode films made of ceramic, the electrode films being disposed on a surface of the substrate; electrode terminals made of ceramic, each of the electrode terminals being secured to a corresponding one of the electrode films; and external electrodes each attached to a corresponding one of the electrode terminals via a brazing filler metal. A thermal expansion coefficient of the brazing filler metal is equal to or higher than a thermal expansion coefficient of the electrode terminals, and is equal to or lower than a thermal expansion coefficient of the external electrodes. The thermal expansion coefficient of each of the electrode terminals decreases from a portion at which the electrode terminal is joined to the brazing filler metal toward a portion at which the electrode terminal is joined to the corresponding electrode film.

Electrically-heated catalytic converter

Provided are a composite material that has lower volume resistivity in comparison with SiC, SiC&#x2014;Si, and the like, which are materials for forming constituent elements of an EHC, has low temperature dependence of volume resistivity, and thus is able to form a constituent element of a high-performance EHC; an electrode film, an electrode terminal, and a honeycomb substrate that are constituent elements of an EHC formed with such composite material, and a method for producing them. The composite material contains MoSiand at least one of Si or SiC, and is a material for forming a constituent element of an electrically heated catalytic converter. An electrode film, an electrode terminal, and a substrateare produced from such composite material.

Composite material, electrode film and method for producing the same, electrode terminal and method for producing the same, substrate and method for producing the same, and bonding material and method for producing substrate by bonding split parts together with bonding material

An exhaust gas sensor () is configured so as to detect an oxygen concentration or air-fuel ratio in exhaust gas. The exhaust gas sensor includes a sensor element () and a manganese reaction layer (). The sensor element detects an oxygen concentration or air-fuel ratio. The manganese reaction layer is formed on at least part of a surface of the sensor element and is formed of a substance containing an element capable of generating a complex oxide having manganese through reaction with a manganese oxide in the exhaust gas. The exhaust gas sensor is configured to detect an oxygen concentration or air-fuel ratio in exhaust gas of an internal combustion engine that utilizes a fuel having a Mn concentration in excess of 20 ppm.

Exhaust gas sensor

An exhaust gas sensor () is configured to detect an oxygen concentration or air-fuel ratio in exhaust gas of an internal combustion engine. The exhaust gas sensor includes a sensor element () and a glass coating film (). The sensor element is configured to detect an oxygen concentration or air-fuel ratio in the exhaust gas sensor. The glass coating film () is formed on at least part of a surface of the sensor element and capable of absorbing a Mn component contained in the exhaust gas at 700&#xb0; C. The internal combustion engine uses a fuel having a Mn concentration in excess of 20 ppm.

This invention provides a fine particle composite comprising fine particles of a sulfide or sulfide complex comprising at least one element selected from the group consisting of molybdenum (Mo), rhodium (Rh), ruthenium (Ru), and rhenium (Re) and conductive fine particles via a step of preparing a solvent mixture from a compound containing conductive carbon powder, at least one compound containing an element selected from among molybdenum (Mo), rhodium (Rh), ruthenium (R), and rhenium (Re), and sulfur (S) and a step of conducting a hydrothermal or solvothermal reaction at a pressure and temperature that convert the solvent mixture into a supercritical or subcritical water or solvent.

Fine particle composite, method for producing the same, catalyst used for solid polymer fuel cell, and solid polymer fuel cell

This invention provides a fine particle composite comprising fine powder of a sulfide or sulfide complex comprising a given element. The fine particle composite is obtained by a method for producing a fine particle composite comprising fine powder of a sulfide or sulfide complex comprising at least one element selected from the group consisting of molybdenum (Mo), rhodium (Rh), ruthenium (Ru), and rhenium (Re). Such method comprises steps of: preparing a solvent mixture from at least one compound containing an element selected from among molybdenum (Mo), rhodium (Rh), ruthenium (Ru), rhenium (Re), and sulfur (S); and subjecting the solvent mixture to a hydrothermal or solvothermal reaction. The resulting fine particle composite comprises fine particles of a sulfide or sulfide complex comprising at least one element selected from the group consisting of molybdenum (Mo), rhodium (Rh), ruthenium (Ru), and rhenium (Re).

Single-crystal fine powder of sulfide or sulfide complex and method for preparing the same

Basalt filament is manufactured such that the fiber diameter can be controlled and the filament is not severed during winding. A network former and a glass modifier are formed and maintained with respect to basalt rock ore, and the crystallization and binding of basalt fiber are inhibited, the heat-resistance property of basalt fiber is greatly improved from the conventional 750&#xb0; C. to 850 or 900&#xb0; C., and significant cost reduction is achieved over conventional products. The method includes: grinding basalt rock as a material; washing a resultant ground rock; melting the ground rock that has been washed; transforming a molten product into fiber; and drawing the fiber in an aligned manner, and winding it. The temperature of the molten product in the melting step is 1400 to 1650&#xb0; C., and log &#x3b7; is 2.15 to 2.35 dPa&#xb7;s and preferably 2.2 to 2.3 dPa&#xb7;s, where &#x3b7; is the viscosity of the molten product.

Method for manufacturing basalt fiber

A sealing portion is formed of a calcined body that is made by calcining a powder compact of a spherically-shaped granulated powder that is selected from the group consisting of alumina, aluminum titanate and cordierite. Anisotropy in physical properties is less likely to occur in the powder compact, because these ceramics are not only good in terms of thermal stability but also their spherically-shaped granulated powders are less likely to be oriented at the time of powder compacting. Therefore, the sealing portion comes to have a long longevity, because slippages between the particles are less likely to occur even when thermal histories are applied thereto, and because it can maintain the gas sealing property stably for a long period of time.

Gas sensor and process for producing the same

A synthetic grinding stone used for the polishing of a silicon wafer is composed of a structure containing cerium oxide fine particles as abrasive grains, a resin as a binder, a salt as a filler and a nano diamond as an additive. This synthetic grinding stone is characterized in that the purity of the cerium oxide is not less than 60% by weight, the content of the salt as a filler is not less than 1% but not more than 20%, the volume content of the nano diamond as an additive is not less than 0.1% but less than 20% relative to the total volume of the structure, and the porosity as the volume fraction relative to the total volume of the structure is less than 30%.

Synthetic grinding stone

According to the present invention, a fluorescent powder composed mainly of an acicular or fibrous zinc oxide single crystal with an aspect ratio of 5 or higher is produced by the following steps: A zinc oxide single crystal powder can be produced at low cost without the need for a pulverization step or a similar step and high-density orientation can be realized by such crystal powder. Such crystal powder is most suitable for light emitting devices, display devices, fluorescent lamps, and the like.

Fluorescent powder, process for producing the same, and light emitting device, display device, and fluorescent lamp containing fluorescent powder

This invention provides carbon composite materials, which comprise metal carbide particles, at least the particle surfaces or the entirety of which are metal carbides, synthesized in situ from a metal source, i.e., at least one member selected from the group comprising metal particles, metal oxide particles, and composite metal oxide particles, and a carbon source, i.e., a thermosetting resin, dispersed in a carbon, carbon fiber, or carbon/carbon fiber matrix, and contain no free metal particles. This invention also provides a method for producing such composite carbon materials, which enables the production of carbon composite materials having a high coefficient of friction, high thermostability, and abrasion resistance.

Carbon composite materials comprising particles of metal carbides dispersed therein and method for producing the same

Basalt filament is manufactured in such a manner that the fiber diameter can be controlled and the filament is not severed during the winding step. A network former and a glass modifier are formed and maintained with respect to basalt rock ore, and the crystallization and binding of basalt fiber are inhibited, the heat-resistance property of basalt fiber is greatly improved from the conventional 750&#xb0; C. to 850 or 900&#xb0; C., and significant cost reduction is achieved over conventional products. The method includes the steps of: grinding basalt rock as a material; washing a resultant ground rock; melting the ground rock that has been washed; transforming a molten product into fiber; and drawing the fiber in an aligned manner, and winding it. The temperature of the molten product in the melting step is 1400 to 1650&#xb0; C., and log &#x3b7; is 2.15 to 2.35 dPa&#xb7;s and preferably 2.2 to 2.3 dPa&#xb7;s, where &#x3b7; is the viscosity of the molten product.

A precision machining method enabling grinding with high accuracy is provided. The method includes a first step of producing an intermediate ground workpiece by roughly grinding a workpiece (a) with a diamond grinding wheel (b), and a second step of producing a final ground workpiece by grinding the intermediate ground workpiece with a grinding wheel for CMG. In the first step, feed of the rotator () and the base () is controlled in multiple stages with different feed speeds according to control based on the amount of movement, and in the second step, movement of the rotator () and the base () is controlled with a constant pressure or in multiple stages having different constant pressures.

Precision machining method

A precision machining apparatus is structured such that a feed-screw mechanism and an actuator are mounted on a second mount which supports a rotating device that rotates a wheel, and grinding is performed while appropriately adjusting the amount of movement of the second mount in a rough grinding stage through an ultra-precision grinding stage. A posture control device is interposed between a first mount and a rotating device that rotates a grinding target body. The thickness and evenness of the grinding target body are measured by an optical probe and the measurement results are sent to a computer. A feedback command is then sent to the posture control device to reduce the difference between target values and the measurement values and posture control is performed accordingly.

Precision machining apparatus and precision machining method

Growing community of inventors

Toyota, Japan

Sumio Kamiya