公开(公告)号：US10323168B2

公开(公告)日：2019-06-18

申请号：US15555532

申请日：2016-03-04

Applicant: Kanagawa Institute of Industrial Science and Technology ,  National University Corporation YOKOHAMA National University

Inventor： Takuma Takahashi ,  Junichi Tatami ,  Nanako Sugimoto

IPC: C04B35/10 ,  C09K5/14 ,  C04B35/584 ,  C04B35/628 ,  C04B35/63 ,  C04B35/634 ,  C04B35/64 ,  C04B35/80 ,  H01F1/11 ,  C04B35/117 ,  C04B35/593 ,  C04B35/626

Abstract: A production process for a crystal oriented ceramics includes: a first step of preparing composite particles formed of particles having magnetic anisotropy having magnetic susceptibility anisotropy and seed particles having magnetic susceptibility anisotropy less than or equal to 1/10 of the magnetic susceptibility anisotropy of the particles having magnetic anisotropy and are formed of an inorganic compound having an anisotropic shape in which a crystal axis intended to be corresponds to a minor axis or a major axis; a second step of adding raw material powder including the composite particles to a solvent to prepare a slurry a third step of preparing a green compact by disposing the slurry in a static magnetic field of ≥0.1 tesla and drying the slurry in a state in which crystal axes of the seed particles in a major axis direction are in one direction; and a fourth step of sintering the green compact.

公开(公告)号：US20220034778A1

公开(公告)日：2022-02-03

申请号：US17278630

申请日：2020-02-25

Applicant: KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY ,  NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY

Inventor： Takuma Takahashi ,  Junichi Tatami ,  Hiroki Takaba

IPC: G01N11/14 ,  C04B41/00 ,  C04B41/80 ,  G01B9/02 ,  B28B11/24

Abstract: The purpose of the present invention is to achieve an in-situ observation of structural change in a shear field of slurry, i.e. an evaluation of a rheology property of slurry containing raw materials of a ceramic as a fluid sample, together with an in-situ observation of internal structure of the fluid sample in an evaluation process, and a clarification of internal structural change. An observation of an internal structure of a fluid sample 1 in an evaluation process of a rheology property by a rheometer 10 is achieved by generating an optical coherence tomographic image by performing an optical coherence tomography by irradiating a light in infrared region from outside of the rheometer 10 to the fluid sample 1, by inclining an optical axis of light in infrared region irradiating the fluid sample 1 for a predetermined angle within an angular range of 1 to 10 degrees with respect to a normal direction of an observation surface 1A of the fluid sample 1 by the optical coherence tomography imaging device 20, together with an evaluation of a rheology property of the fluid sample 1 containing components different in a refractive index by the rheometer 10.

公开(公告)号：US11447696B2

公开(公告)日：2022-09-20

申请号：US17273263

申请日：2020-07-22

Applicant: KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY

Inventor： Junichi Tatami ,  Emi Takahashi ,  Takuma Takahashi

IPC: C09K11/77 ,  C09K11/02 ,  H01L33/50 ,  C04B35/645 ,  C04B35/053 ,  C04B41/45 ,  C04B41/50 ,  C09K11/08

Abstract: A fluorescent member according to present invention is composed of a sintered body for wavelength conversion containing a matrix containing magnesium oxide and magnesium hydroxide as main components, and phosphor particles dispersed in the matrix. A thermal conductivity of the fluorescent member is preferably 5 W/(m·K) or higher. A fluorescent member having both a satisfactory thermal conductivity and a satisfactory fluorescent property is provided without requiring a high-temperature sintering process (a high-temperature process at a temperature higher than 250° C.). Further, a method for manufacturing such a fluorescent member and a light-emitting apparatus using such a fluorescent member are provided.

公开(公告)号：US10982140B2

公开(公告)日：2021-04-20

申请号：US16328136

申请日：2017-08-25

Applicant: Kanagawa Institute of Industrial Science and Technology ,  National University Corporation YOKOHAMA National University

Inventor： Takuma Takahashi ,  Junichi Tatami ,  Ippei Kokubun ,  Masahiro Yokouchi

IPC: C09K11/64 ,  C09K11/00 ,  C09K11/08 ,  C09K11/77 ,  C09K11/02 ,  C04B35/581 ,  C04B35/584 ,  C04B35/63

Abstract: A nitride phosphor particle dispersion-type sialon ceramic of the present invention includes a matrix formed of a sialon-based compound; and at least one nitride phosphor which is dispersed in the matrix and contains a luminescence center element.