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    LIGHT WAVELENGTH CONVERSION MEMBER AND LIGHT EMITTING DEVICE
    1.
    发明申请
    LIGHT WAVELENGTH CONVERSION MEMBER AND LIGHT EMITTING DEVICE 审中-公开

    公开(公告)号：US20190245118A1

    公开(公告)日：2019-08-08

    申请号：US16342621

    申请日：2017-10-20

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Jun MOTEKI ,  Shohei TAKAKU ,  Yusuke KATSU ,  Takeshi MITSUOKA ,  Tsuneyuki ITO

    IPC: H01L33/50 ,  C09K11/08 ,  G02B5/20

    CPC classification number: H01L33/502 ,  C04B35/50 ,  C04B2235/3222 ,  C09K11/08 ,  G02B5/20 ,  H01L33/50

    Abstract: An optical wavelength conversion member and a light-emitting device including the optical wavelength conversion member. The light-emitting device (1) includes a container (3), a light-emitting element (5), and an optical wavelength conversion member (9). The optical wavelength conversion member (9) is composed of a polycrystalline ceramic sintered body containing, as main components, Al2O3 crystal grains and crystal grains of a component represented by formula A3B5O12:Ce. Specifically, A and B of the A3B5O12 individually represent at least one element selected from the following element groups: A: Sc, Y, and lanthanoids (except for Ce), and B: Al and Ga; the at least one element selected from the element groups is present in each crystal grain and the crystal grain boundary of the ceramic sintered body; and the element concentration of the crystal grain boundary is higher than the element concentration of the crystal grain.

    OPTICAL WAVELENGTH CONVERSION MEMBER AND LIGHT-EMITTING DEVICE
    3.
    发明申请
    OPTICAL WAVELENGTH CONVERSION MEMBER AND LIGHT-EMITTING DEVICE 审中-公开

    公开(公告)号：US20190259918A1

    公开(公告)日：2019-08-22

    申请号：US16342390

    申请日：2017-10-20

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Shohei TAKAKU ,  Yusuke KATSU ,  Tsuneyuki ITO ,  Yuki SHIMURA ,  Takeshi MITSUOKA ,  Jun MOTEKI

    IPC: H01L33/50 ,  C04B35/50

    Abstract: An optical wavelength conversion member and a light-emitting device including the optical wavelength conversion member. The optical wavelength conversion member (9) is formed of a ceramic sintered body having a fluorescent phase containing fluorescent crystal grains as a main component and a translucent phase containing translucent crystal grains as a main component. Crystal grains of the fluorescent phase have a composition represented by formula A3B5O12:Ce, where the element A is selected from Sc, Y, and lanthanoids (except for Ce), and the element B is selected from Al and Ga. In the optical wavelength conversion member (9), 0.3

    CERAMIC SINTERED BODY
    5.
    发明申请
    CERAMIC SINTERED BODY 审中-公开

    公开(公告)号：US20190233333A1

    公开(公告)日：2019-08-01

    申请号：US16312362

    申请日：2017-06-19

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Jun MOTEKI ,  Yusuke KATSU ,  Takeshi MITSUOKA

    IPC: C04B35/117

    Abstract: The durability of a ceramic sintered body is improved, and a reduction in its light emission intensity and the occurrence of a chromaticity variation are suppressed. The ceramic sintered body contains alumina and a compound represented by M13-XM2XM35O12. The volume percent of the compound in the ceramic sintered body is from 3% to 70% inclusive. The ratio of the intensity of XRD from a complex oxide of aluminum and M2 to the intensity of XRD from the compound in the ceramic sintered body is less than 0.05. The average grain diameter of the alumina contained in the ceramic sintered body is from 0.30 (μm) to 3.00 (μm) inclusive. M1 is at least one selected from Sc, Y, and lanthanoid elements, and M2 is at least one selected from lanthanoid elements except any lanthanoid element selected for M1. M3 is at least one of Al and Ga, and X is from 0.003 to 0.500 inclusive.

    LIGHT WAVELENGTH CONVERSION MEMBER AND LIGHT EMISSION DEVICE
    6.
    发明申请
    LIGHT WAVELENGTH CONVERSION MEMBER AND LIGHT EMISSION DEVICE 审中-公开

    公开(公告)号：US20190198726A1

    公开(公告)日：2019-06-27

    申请号：US16328161

    申请日：2017-10-18

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Jun MOTEKI ,  Shohei TAKAKU ,  Yusuke KATSU ,  Takeshi MITSUOKA ,  Tsuneyuki ITO

    IPC: H01L33/50 ,  H01L33/16 ,  C04B35/44 ,  C04B35/115 ,  C04B35/117 ,  C09K11/77

    Abstract: An optical wavelength conversion member including a polycrystalline ceramic sintered body containing, as main components, Al2O3 crystal grains and crystal grains of a component represented by formula A3B5O12:Ce, wherein A is at least one element selected from Sc, Y and lanthanoids (except for Ce), and B is at least one element selected from Al and Ga. Further, the following relations are satisfied: 0%≤X≤25%, 9%≤Y≤45%, and 48%≤Z≤90%, wherein X represents a proportion corresponding to the ratio a/N, Y represents a proportion corresponding to the ratio b/N, and Z represents a proportion corresponding to the ratio c/N and a, b, c and N are as defined herein. Also disclosed is a light-emitting device including the optical wavelength conversion member.

    CERAMIC SINTERED BODY, INSERT, CUTTING TOOL, AND FRICTION STIR WELDING TOOL
    9.
    发明申请
    CERAMIC SINTERED BODY, INSERT, CUTTING TOOL, AND FRICTION STIR WELDING TOOL 审中-公开

    公开(公告)号：US20200223758A1

    公开(公告)日：2020-07-16

    申请号：US16639056

    申请日：2018-09-18

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Yoshito KOJIMA ,  Hiroshi YONEKURA ,  Yusuke KATSU ,  Takeshi MITSUOKA

    IPC: C04B35/56 ,  B23B27/14 ,  C04B41/50

    Abstract: Provided is a ceramic sintered body having high wear resistance and chipping resistance. Also provided are an insert, a cutting tool and a friction stir welding tool, each of which uses such a high-performance ceramic sintered body. The ceramic sintered body includes Al2O3 (alumina), WC (tungsten carbide) and ZrO2 (zirconia), wherein Zr (zirconium) element is present at either one or both of: (1) a grain boundary between crystal grains of the Al2O3; and (2) a grain boundary of crystal grains of the Al2O and crystal grains of the WC, wherein the ceramic sintered body contains 55.0 to 97.5 vol % of the WC, 0.1 to 18.0 vol % of the ZrO2, and the balance being the Al2O3, and wherein the ZrO2 is in a phase of tetragonal structure (T) or a mixed phase of tetragonal structure (T) and monoclinic structure (M).

    GAS SENSOR ELEMENT AND GAS SENSOR
    10.
    发明申请
    GAS SENSOR ELEMENT AND GAS SENSOR 有权
    气体传感器元件和气体传感器

    公开(公告)号：US20140130572A1

    公开(公告)日：2014-05-15

    申请号：US13907230

    申请日：2013-05-31

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Shigehiro OTSUKA ,  Masaki ONKAWA ,  Toru IWANO ,  Satoshi TERAMOTO ,  Kuniharu TANAKA ,  Takeshi MITSUOKA

    IPC: G01M15/10

    CPC classification number: G01M15/102 ,  G01N27/4077

    Abstract: A gas sensor element and a gas sensor incorporating the gas sensor element. The gas sensor element (100) includes a detection portion (150) including a solid electrolyte body (105) and a pair of electrodes (104) and (106) disposed on the solid electrolyte body; and a porous protection layer (20) covering the detection portion. The porous protection layer includes an inner porous layer (21) and an outer porous layer (23). The inner porous layer has a higher porosity than the outer porous layer. Further, the inner porous layer contains, as main components, ceramic particles (21a), and ceramic fiber filaments (21b), and the amount of the ceramic fiber filaments is 25 to 75 vol % based on the total amount of the ceramic particles and the ceramic fiber filaments taken as 100 vol %.

    Abstract translation: 气体传感器元件和包含气体传感器元件的气体传感器。 气体传感器元件（100）包括：固体电解质体（105）和配置在固体电解质体上的一对电极（104）和（106）的检测部（150） 以及覆盖所述检测部的多孔保护层（20）。 多孔保护层包括内部多孔层（21）和外部多孔层（23）。 内部多孔层的孔隙率高于外层多孔层。 此外，内部多孔层含有陶瓷粒子（21a）和陶瓷纤维丝（21b）作为主要成分，陶瓷纤维丝的量相对于陶瓷粒子的总量为25〜75体积％， 陶瓷纤维长丝为100体积％。

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