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    SOLID ELECTROLYTE ELEMENT AND OXYGEN CONCENTRATION MEASURING DEVICE
    11.
    发明专利
    SOLID ELECTROLYTE ELEMENT AND OXYGEN CONCENTRATION MEASURING DEVICE 失效

    公开(公告)号：JPH10213563A

    公开(公告)日：1998-08-11

    申请号：JP1504997

    申请日：1997-01-29

    Applicant: TORAY INDUSTRIES

    Inventor： YOSHIDA FUMIO ,  KAWAKITA SUSUMU ,  SUZUKI MASANARI

    IPC: G01N27/411 ,  C04B35/48

    Abstract: PROBLEM TO BE SOLVED: To accurately measure a low oxygen concentration of a ppm level by including a solid electrolyte having ion conductivity and low electron conductivity in a solid electrolyte layer where a heat resistant impact temperature has the ion conductivity of a specified temperature. SOLUTION: For oxygen measuring, an oxygen ion conductive solid electrolyte, for instance yttria zirconium is preferred, but it is weak to heat resistant impacts and therefor it is not suited for a casting sensor. Thus, a solid electrolyte layer is constructed in such a manner that a one end sealed tube 1 (Tammanin tube) is composed by using a solid electrolyte having ion conductivity where a heat resistant impact temperature is 120 deg.C or higher, for instance, magnesia zirconium, and an yttria zirconium film 5 is coated on a range of the standard pole of its inner surface having a reference material 2. Thus, since a temperature increase gradient is softer compared with the outer surface of Tammanin tube 1, the film 5 is not damaged, a sensor having small partial electron conductivity and large oxygen ion conductivity is provided and low oxygen concentration is accurately measured.

    SOLID ELECTROLYTE ENZYME SENSOR
    12.
    发明专利
    SOLID ELECTROLYTE ENZYME SENSOR 失效

    公开(公告)号：JPH01176937A

    公开(公告)日：1989-07-13

    申请号：JP22088

    申请日：1988-01-04

    Applicant: TORAY INDUSTRIES

    Inventor： MATSUDA YOSHIO ,  KOBAYASHI KEISUKE ,  YOSHIDA FUMIO

    IPC: G01N27/409

    Abstract: PURPOSE:To enhance the accuracy of measurement and to increase response speed by providing porous electrodes and fine particles of a solid electrolyte, etc., and operating the title sensor at a relatively low temp. CONSTITUTION:The electromotive force based on a difference between the oxygen partial pressures of a reference gas of a known oxygen partial pressure and a gas to be measured is generated between the porous electrodes 2 and 3 when the above-mentioned reference gas is introduced into the sensor from a reference gas introducing pipe 9 and the gas to be measured is introduced into an outside pipe 8. This electromotive force is, therefore, measured by an electromotive force meter 10 to determine the oxygen partial pressure of the gas to be measured. The gaseous oxygen in closed cells 7 is discharged by the oxygen pump effect of the fine particles 5 of the solid electrolyte or the gaseous oxygen is introduced therein from the contact gas even if the closed cells 7 exist in the electrodes 2, 3 and, therefore, the oxygen partial pressure of the gas in the cells 7 equilibrates rapidly with the oxygen partial pressure of the contact gas. The sensor is operated at the relatively low temp. in such a manner. The accuracy of the measurement is thus enhanced and the response speed is increased.

    ABRASIVE
    15.
    发明专利
    ABRASIVE 失效

    公开(公告)号：JP2000026840A

    公开(公告)日：2000-01-25

    申请号：JP19423598

    申请日：1998-07-09

    Applicant: TORAY INDUSTRIES

    Inventor： ONO MAMORU ,  KAWAKITA SUSUMU ,  YOSHIDA FUMIO

    IPC: B24B37/00 ,  C01F17/00 ,  C09K3/14 ,  H01L21/304

    Abstract: PROBLEM TO BE SOLVED: To provide an abrasive which, with respect to abrasion of a glass stock and a semiconductor device, contains no contaminants, provides an im proved abrasion speed as compared to a silica abrasive, while maintaining a surface processed state equal to that obtained using a silica abrasive, shows reduced adhesion of a abrasive grains on the abraded surface and can contribute to the improvement of productivity, by using a ceric oxide powder having spe cific properties. SOLUTION: This abrasive comprises a cerium oxide powder in which a number average particle diameter of a primary particle is 0.01-0.5 μm and the half-value width 2θ( deg.) of an angle 28.6 deg. (111 face) of diffraction in X-ray diffraction is 0.7-0.15 deg.. In order to prepare a slurry of the abrasive using the cerium oxide as an abrasive grain, the cerium oxide is preperably contained 0.5-30 wt.%, preferably 1-10 wt.% to a whole amount of the abradant. A stock powder of the cerium oxide can be prepared by various methods. In a hydrothermal method, a base such as ammonia water or the like is added to an aqueous solution of a cerium salt to neutralize the solution and a precipitation is deposited, followed by heating the resulting product in a pressure vessel to crystallize the product.

    CRUSHER, CRUSHING METHOD, ABRASION RESISTANT SCREEN, SLIT AND MEMBER
    18.
    发明专利
    CRUSHER, CRUSHING METHOD, ABRASION RESISTANT SCREEN, SLIT AND MEMBER 失效

    公开(公告)号：JPH09192513A

    公开(公告)日：1997-07-29

    申请号：JP30216796

    申请日：1996-11-13

    Applicant: TORAY INDUSTRIES

    Inventor： TAKUWA MINORU ,  YOSHIDA FUMIO

    IPC: B07B1/46 ,  B02C13/284 ,  B02C17/18 ,  B02C23/08

    Abstract: PROBLEM TO BE SOLVED: To realize a highly abrasion resistant crusher or a highly abrasion resistant part of the crusher, decrease the mixing amount of an abrasive component into a finished product, and minimize the adverse effect of such a mixed abrasive component upon the electric and magnetic characteristics of the finished product, even if the component is present. SOLUTION: This crusher has a wearing part using a ceramic material and the wearing part to be cited is typically the slit part of a screen, i.e., a slit bar 12, a stirring pin 12, a stirring disc or a sleeve 14 or a collar. In addition, the crusher is equipped with at least one of the groups consisting of these wearing parts which are of a ceramic material. Thus, these wearing parts have an increased durability, but in order to prevent a metal component from becoming mixed, it is effective to form all the parts from ceramics as for as possible. The ceramic material is not particularly limited as long as it is a material having abrasion resistance.

    SODIUM/SULFUR SENSOR
    19.
    发明专利
    SODIUM/SULFUR SENSOR 失效

    公开(公告)号：JPH0526841A

    公开(公告)日：1993-02-02

    申请号：JP16259191

    申请日：1991-07-03

    Applicant: TORAY INDUSTRIES ,  TOKYO ELECTRIC POWER CO

    Inventor： MATSUDA YOSHIO ,  YOSHIDA FUMIO ,  KUWAJIMA HIROSHI ,  OKUNO AKIYASU

    IPC: G01N27/416 ,  G01N27/406

    Abstract: PURPOSE:To provide a sodium/sulfur sensor responding to both of sodium and sulfur, capable of discriminating between sodium and sulfur on the basis of the polarity of generated electromotive force and detecting the degree of leakage or leak place of molten sodium or molten sulfur in the state arranged in a sodium-sulfur battery or a fast neutron breeder reactor. CONSTITUTION:A sodium/sulfur sensor contains a sodium ion conductive solid electrolyte 1 and the detection electrode 3 formed in contact with one end part 1a of the sodium ion conductive solid electrolyte 1 and further contains the oxygen ion conductive solid electrolyte 2 arranged so that one end part 2a thereof is bonded to the other end part 1b of the sodium ion conductive solid electrolyte 1 and the reference electrode 4 formed in contact with the other end part 2b of the oxygen ion conductive solid electrolyte 2.

    CARBON DIOXIDE SENSOR
    20.
    发明专利
    CARBON DIOXIDE SENSOR 失效

    公开(公告)号：JPH026738A

    公开(公告)日：1990-01-10

    申请号：JP15462988

    申请日：1988-06-24

    Applicant: TORAY INDUSTRIES

    Inventor： MATSUDA YOSHIO ,  KAWAKITA SUSUMU ,  SHIMONO MASARU ,  JINNO SHIGERU ,  YOSHIDA FUMIO ,  KOBAYASHI KEISUKE

    IPC: G01N27/416 ,  G01N27/406

    Abstract: PURPOSE:To improve the accuracy and stability of a sensor by disposing an Na conductive solid electrolyte and an anode electrode in such a manner that both do not come into direct contact with each other. CONSTITUTION:This sensor has a substrate 1 which consists of an electrical insulator, the Na conductive solid electrolyte which is formed on the substrate 1, a cathode electrode 2a which is formed in contact with one end of the solid electrolyte 2, the anode electrode 4 which is parted from the other end of the solid electrolyte 2 and is formed on the substrate 1, and Na2CO3 5 which bridges the other end 2b of the solid electrolyte 2 and the anode electrode 4. The electromotive force proportional to the concn. of carbon dioxide is generated between the anode electrode 4 and the cathode electrode 2a when a gas to be detected contg. carbon dioxide comes into contact with the sensor heated to 300-750 deg.C. The partial pressure of the carbon dioxide in the gas to be detected, i.e., the concn. thereof, can be known from the electromotive force shown by the sensor when the sensor is inserted into the gas to be detected. The accuracy and stability of the sensor are improved in this way.

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