US 11,078,416 B2 · Transparent fluorescent sialon ceramic and method of producing same

Abstract

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 Mx(Si,Al)y(N,O)z (here, M represents at least one selected from the group consisting of Li, alkaline earth metals, and rare earth metals, 0≤x/z<3, and 0<y/z<1) and a luminescent center element.

Claims4

Dependent claims

A fluorescent sialon ceramic consisting of:

a sialon phosphor in the form of a sintered bulk body, the sialon phosphor consisting of a matrix formed of β-sialon represented by the formula (Si,Al)6(N,O)8, and a luminescent center element,
wherein the linear transmittance of visible light of the sintered bulk body is 11% or greater at a wavelength of 800 nm as measured with respect to a test specimen of the sintered bulk body having a thickness of 100 μm.

Dependencies are inferred from the claim text.

Facts

Application

15/123,552Filed 6 Mar 2015

Priority

JP JP2014-0444306 Mar 2014

Published

US 2017/0073578 A116 Mar 2017

Granted

3 Aug 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification34 codes

C09K 11/7792
Containing two or more rare earth metals one of which being europium: aluminates
C04B 35/597
Based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides: based on silicon oxynitride, e.g. SIALONS
C04B 35/62625
Treating the starting powders individually or as mixtures: wet mixtures
C04B 35/62695
Treating the starting powders individually or as mixtures: granulation or pelletising

Transparent fluorescent sialon ceramic and method of producing same

Life of this patent

Transparent fluorescent sialon ceramic and method of producing same

Life of this patent

Abstract

Claims4