Kanagawa Institute of Industrial Science and Technology

Yokohama National University

Takuma Takahashi

Junichi Tatami

Masahiro Yokouchi

Emi Takahashi

Ippei Kokubun

Yuki Sano

Takehiko Tanaka

Nanako Sugimoto

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&#xb7;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&#xb0; C.). Further, a method for manufacturing such a fluorescent member and a light-emitting apparatus using such a fluorescent member are provided.

Fluorescent member, its manufacturing method, and light-emitting apparatus

Provided are a transparent fluorescent sialon ceramic having fluorescence and optical transparency; and a method of producing the same. Such a transparent fluorescent sialon ceramic includes a sialon phosphor which contains a matrix formed of a silicon nitride compound represented by the formula M(Si,Al)(N,O)(here, M represents at least one selected from the group consisting of Li, alkaline earth metals, and rare earth metals, 0&#x2264;x/z&#x3c;3, and 0&#x3c;y/z&#x3c;1) and a luminescent center element.

Transparent fluorescent sialon ceramic and method of producing same

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.

Nitride phosphor particle dispersion-type sialon ceramic, fluorescent member, and method for producing nitride phosphor particle dispersion-type sialon ceramic

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 &#x2265;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.

Growing community of inventors

Kawasaki, Japan

Takuma Takahashi