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公开(公告)号：US20170037311A1
公开(公告)日：2017-02-09
申请号：US15228109
申请日：2016-08-04
Applicant: NICHIA CORPORATION
Inventor： Shoji HOSOKAWA , Motoharu MORIKAWA , Tadayoshi YANAGIHARA , Kenichi AOYAGI , Takashi KAIDE
CPC classification number: C09K11/7734 , C09K11/0883
Abstract: A method for producing a β-sialon fluorescent material can be provided. The method includes preparing a composition containing silicon nitride that contains aluminium, an oxygen atom, and europium, heat-treating the composition in a rare gas atmosphere or in a vacuum, and contacting the heat-treated composition with a gas containing elemental fluorine.
Abstract translation: 可以提供β-赛隆荧光体的制造方法。 该方法包括制备含有铝，氧原子和铕的氮化硅的组合物，在稀有气体气氛或真空中对组合物进行热处理，并使热处理组合物与含有元素氟的气体接触。
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公开(公告)号：US20190330528A1
公开(公告)日：2019-10-31
申请号：US16504937
申请日：2019-07-08
Applicant: NICHIA CORPORATION
Inventor： Motoharu MORIKAWA , Shoji HOSOKAWA , Takashi KAIDE , Kenichi AOYAGI
Abstract: A method for producing β-sialon fluorescent material having excellent emission intensity is provided. The method for producing β-sialon fluorescent material includes providing a composition comprising silicon nitride that contains aluminium, an oxygen atom, and europium, heat treating the composition, contacting the heat-treated composition with a basic substance, and washing the composition, which has been contacted with the basic substance, with an acidic liquid medium.
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公开(公告)号：US20200002605A1
公开(公告)日：2020-01-02
申请号：US16454917
申请日：2019-06-27
Applicant: NICHIA CORPORATION
Inventor： Motoharu MORIKAWA , Shoji HOSOKAWA
IPC: C09K11/08 , C04B35/597 , C04B35/626 , C09K11/77 , C04B35/63
Abstract: Provided is a method for producing a β-sialon fluorescent material, comprising preparing a composition containing a silicon nitride that contains aluminium, oxygen, and europium; heat-treating the composition at a temperature in a range of 1300° C. or more and 1600° C. or less to obtain a heat-treated product; subjecting the heat-treated product to a temperature-decrease of from the heat treatment temperature to 1000° C. as a first temperature-decrease step; and subjecting the heat-treated product to a temperature-decrease of from 1000° C. to 400° C. as a second temperature-decrease step. The first temperature-decrease step has a temperature-decrease rate in a range of 1.5° C./min or more and 200° C./min or less, and the second temperature-decrease step has a temperature-decrease rate in a range of 1° C./min or more and 200° C./min or less
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Patent Agency Ranking
公开(公告)号：US20210095203A1
公开(公告)日：2021-04-01
申请号：US17120662
申请日：2020-12-14
Applicant: NICHIA CORPORATION
Inventor： Kenichi AOYAGI , Takashi KAIDE , Motoharu MORIKAWA , Shoji HOSOKAWA
Abstract: Provided is a method of producing a β-sialon fluorescent material having a high light emission intensity and an excellent light emission luminance. The method includes preparing a calcined product having a composition of β-sialon containing an activating element; grinding the calcined product to obtain a ground product; and heat-treating the ground product to obtain a heat-treated product. A specific surface area of the ground product is 0.2 m2/g or more.
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公开(公告)号：US20170342321A1
公开(公告)日：2017-11-30
申请号：US15606153
申请日：2017-05-26
Applicant: NICHIA CORPORATION
Inventor： Kenichi AOYAGI , Takashi KAIDE , Motoharu MORIKAWA , Shoji HOSOKAWA
CPC classification number: C09K11/7734 , C09K11/0883
Abstract: Provided is a method of producing a β-sialon fluorescent material having a high light emission intensity and an excellent light emission luminance. The method includes preparing a calcined product having a composition of β-sialon containing an activating element; grinding the calcined product to obtain a ground product; and heat-treating the ground product to obtain a heat-treated product. A specific surface area of the ground product is 0.2 m2/g or more.
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公开(公告)号：US20170166810A1
公开(公告)日：2017-06-15
申请号：US15378690
申请日：2016-12-14
Applicant: NICHIA CORPORATION
Inventor： Motoharu MORIKAWA , Shoji HOSOKAWA
CPC classification number: C09K11/7734 , C09K11/0883
Abstract: A method for producing β-sialon fluorescent material having excellent emission intensity is provided. The method for producing β-sialon fluorescent material includes providing a composition comprising silicon nitride that contains aluminium, an oxygen atom, and europium, heat treating the composition, and contacting the heat-treated composition with a basic substance.
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公开(公告)号：US20160355731A1
公开(公告)日：2016-12-08
申请号：US15172862
申请日：2016-06-03
Applicant: NICHIA CORPORATION
Inventor： Kenichi AOYAGI , Takashi KAIDE , Motoharu MORIKAWA , Shoji HOSOKAWA
IPC: C09K11/77
CPC classification number: C09K11/7734
Abstract: A method for producing a β-sialon fluorescent material is provided. The method includes heat-treating a mixture containing an aluminium compound, a first europium compound, and silicon nitride to obtain a first heat-treated product; and heat-treating the first heat-treated product with a second europium compound in a rare gas atmosphere to obtain a second heat-treated product.
Abstract translation: 提供了β-赛隆荧光材料的制造方法。 该方法包括对含有铝化合物，第一铕化合物和氮化硅的混合物进行热处理以获得第一热处理产物; 在稀有气体气氛中用第二铕化合物对第一热处理物进行热处理，得到第二热处理物。
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公开(公告)号：US20160347999A1
公开(公告)日：2016-12-01
申请号：US15165580
申请日：2016-05-26
Applicant: NICHIA CORPORATION
Inventor： Motoharu MORIKAWA , Kenichi AOYAGI , Takashi KAIDE , Shoji HOSOKAWA
IPC: C09K11/77
CPC classification number: C09K11/7734
Abstract: A method for producing a β-sialon fluorescent material superior in light emitting luminance is provided. The method includes heat-treating a first mixture containing an aluminum compound, a europium compound, and a first silicon oxynitride compound to obtain a first heat-treated product, and heat-treating a second mixture containing the first heat-treated product, an aluminum compound, a europium compound, and a second silicon oxynitride compound, which has a larger oxygen content than the first silicon oxynitride compound, to obtain a second heat-treated product.
Abstract translation: 提供了一种制造发光亮度优异的β-赛隆荧光体的方法。 该方法包括热处理包含铝化合物，铕化合物和第一氮氧化硅化合物的第一混合物以获得第一热处理产物，并且热处理含有第一热处理产物的第二混合物，铝 化合物，铕化合物和第二氮氧化硅化合物，其具有比第一氮氧化硅化合物更大的氧含量，以获得第二热处理产物。
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