WO2012042957A1 - β型サイアロンの製造方法 - Google Patents
β型サイアロンの製造方法 Download PDFInfo
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- WO2012042957A1 WO2012042957A1 PCT/JP2011/059780 JP2011059780W WO2012042957A1 WO 2012042957 A1 WO2012042957 A1 WO 2012042957A1 JP 2011059780 W JP2011059780 W JP 2011059780W WO 2012042957 A1 WO2012042957 A1 WO 2012042957A1
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- sialon
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7701—Chalogenides
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/0883—Arsenides; Nitrides; Phosphides
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/64—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing aluminium
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/77348—Silicon Aluminium Nitrides or Silicon Aluminium Oxynitrides
Definitions
- the present invention relates to a method for producing ⁇ -sialon used as a phosphor usable in a light emitting device using a blue light emitting diode or an ultraviolet light emitting diode.
- the ⁇ -sialon luminance is significantly improved by subjecting the ⁇ -sialon synthesized once to heat treatment in vacuum or under an inert atmosphere with a low nitrogen partial pressure and acid treatment (Patent Document 1).
- An object of the present invention is to provide a method for producing ⁇ -sialon having higher fluorescence intensity.
- the present invention includes a mixing step of mixing raw material powder containing silicon, aluminum and europium, and firing the raw material obtained by mixing in an atmosphere of an inert gas or a non-oxidizing gas to form a general formula: Si 6-z Al z O z N 8-z : Buy process for generating ⁇ -sialon represented by Eu (0 ⁇ z ⁇ 4.2), annealing process for annealing the generated ⁇ -sialon, and annealed ⁇ -type And an acid treatment step of immersing sialon in an acid solution, wherein the annealing treatment is performed under a reducing atmosphere, an atmospheric pressure of 1 kPa to 10 MPa, an atmospheric temperature of 1200 ° C. to 1600 ° C.
- the present invention provides a method for producing ⁇ -sialon which is performed in a treatment time of 1 hour or more and 24 hours or less.
- the reducing atmosphere is preferably hydrogen gas.
- the reducing atmosphere is preferably a mixed gas of reducing gas and inert gas, and the hydrogen gas concentration in the mixed gas is preferably 1% by volume or more.
- the acid solution in the acid treatment step is preferably a mixed acid containing at least hydrofluoric acid and nitric acid.
- Calcination is preferably performed in an atmosphere at a temperature of 1850 ° C. or higher.
- the present invention is a ⁇ -sialon having higher fluorescence intensity by controlling the atmosphere type, its pressure and temperature, and the processing time in the annealing step in the method for producing ⁇ -sialon.
- the present invention includes a mixing step of mixing raw material powder containing silicon, aluminum and europium, and firing the raw material obtained by mixing in an atmosphere of an inert gas or a non-oxidizing gas to form a general formula: Si 6-z al z O z N 8-z : Eu has a firing step to produce a ⁇ -sialon represented by (0 ⁇ z ⁇ 4.2), and a annealing step of annealing the fired ⁇ -sialon, annealing Is a method for producing ⁇ -sialon in a reducing atmosphere of a reduced pressure atmosphere of 1 KPa or higher to a pressurized atmosphere of 10 MPa and an atmospheric temperature of 1200 ° C. to 1600 ° C. and a processing time of 1 hour to 24 hours.
- the temperature of the atmosphere in the firing process is as low as 1800 ° C. or lower, it may be difficult to give sufficient fluorescence intensity. For this reason, it is preferable that the temperature of the atmosphere at the time of baking is 1850 degreeC or more.
- the atmosphere in the annealing process is a reducing atmosphere is that the reducing gas acts on crystal defects in which the electrical neutrality of ⁇ -sialon is not locally maintained, and the crystallinity is improved. Due to the improvement in crystallinity, the fluorescence intensity of ⁇ -sialon is improved.
- the reducing gas is composed of any one or a mixture of ammonia gas, hydrocarbon gas, carbon monoxide gas, and hydrogen gas.
- hydrogen gas having a small molecular size is preferable because it is effective for improving crystallinity. .
- the reducing gas may be mixed with an inert gas.
- the inert gas is a noble gas or nitrogen of Group 18 element of the periodic table, and examples of the noble gas include argon and helium.
- the concentration of the reducing gas in the mixed gas is preferably 1% by volume or more because it is difficult to improve crystallinity if the concentration is too low. .
- the effect of improving the characteristics in the annealing process is exhibited in a wide range of atmospheric pressures from reduced pressure to increased pressure, but pressures lower than 1 kPa have a small reducing effect due to the atmosphere, and the characteristics are not improved so much, and ⁇ -sialon is decomposed. Since it is promoted, it is not preferable.
- by pressurizing the atmosphere it is possible to broaden other conditions necessary for expressing the annealing effect (low temperature, shortening the time), but even if the atmospheric pressure is too high, the annealing effect reaches its peak. Since a special and expensive annealing apparatus is required, considering mass productivity, the preferable atmospheric pressure is 10 MPa or less, more preferably less than 1 MPa.
- the crystallinity improving effect is low, and if it is too high, ⁇ -sialon is decomposed, and is 1200 ° C. or higher and 1600 ° C. or lower.
- the treatment time in the annealing step is too short, the effect of improving crystallinity is low, and if it is too long, the annealing effect reaches its peak, so it is 1 hour to 24 hours, preferably 2 hours to 10 hours.
- the phosphor properties are further improved by performing an acid treatment step in which ⁇ -sialon is immersed in an acid solution.
- the acid treatment step preferably includes a step of immersing ⁇ -sialon in an acid solution, separating ⁇ -sialon and acid with a filter or the like, and washing the separated ⁇ -sialon with water.
- the decomposition product of the ⁇ -type sialon crystal generated during the annealing process can be removed by the acid treatment, thereby improving the fluorescence characteristics.
- the acid used for the acid treatment include hydrofluoric acid, sulfuric acid, phosphoric acid, hydrochloric acid, or nitric acid alone or in a mixture, and a mixed acid composed of hydrofluoric acid and nitric acid suitable for removing decomposition products. Is preferred.
- the temperature of the acid solution during the acid treatment may be room temperature, but in order to enhance the effect of the acid treatment, it is preferably heated to 50 ° C. or higher and 90 ° C. or lower.
- the average particle size is preferably 6 to 30 ⁇ m.
- the step of adjusting the average particle size of ⁇ -sialon may be performed at any time after the baking step, the annealing step, and the acid treatment step of the present invention.
- a raw material powder containing silicon, aluminum, and europium is mixed, and the raw material obtained by mixing is fired in an atmosphere of an inert gas or a non-oxidizing gas, and the general formula: Si 6 ⁇
- a firing step for generating ⁇ -type sialon represented by z Al z O z N 8-z : Eu (0 ⁇ z ⁇ 4.2) and an annealing step for annealing the fired ⁇ -type sialon were performed.
- ⁇ Mixing process> In the mixing step, ⁇ -type silicon nitride (SN-E10 grade, Ube Industries, Ltd., oxygen content 1.0 mass%), aluminum nitride powder (F grade, Tokuyama Corp., oxygen content 0. 8 mass%), aluminum oxide powder (TM-DAR grade, manufactured by Daimei Chemical Co., Ltd.), and europium oxide powder (RU grade, manufactured by Shin-Etsu Chemical Co., Ltd.).
- these raw material powders were mixed using a silicon nitride pot and balls by a wet ball mill using ethanol as a solvent. After mixing, the solvent was removed and then drying was performed. Thereafter, a sieve having an opening of 150 ⁇ m was passed through to remove aggregates, thereby obtaining a raw material.
- the obtained raw material is filled into a cylindrical boron nitride container with a lid (N-1 grade, manufactured by Denki Kagaku Kogyo Co., Ltd.), and in a pressurized nitrogen atmosphere of 0.85 MPa in an electric furnace of a carbon heater.
- ⁇ -sialon was produced by placing it in an environment at 2000 ° C. for 14 hours.
- the produced ⁇ -sialon is a loosely aggregated lump. Therefore, the produced ⁇ -sialon was lightly crushed and then pulverized with a supersonic jet pulverizer (PJM-80SP, manufactured by Nippon Pneumatic Kogyo Co., Ltd.) to form a powder.
- a supersonic jet pulverizer (PJM-80SP, manufactured by Nippon Pneumatic Kogyo Co., Ltd.)
- ⁇ -sialon is filled in a cylindrical boron nitride container, and the furnace of the tungsten heater is entirely made of metal (the furnace members are made of a refractory metal of tungsten and molybdenum). went.
- the inside of the electric furnace is evacuated to 5 Pa or less, heated to 1000 ° C. at a rate of 20 ° C./min in a vacuum state, hydrogen gas is introduced into the electric furnace, and the electric furnace The inside was 0.15 MPa. Further, hydrogen gas was introduced into the electric furnace, the temperature was raised to 1500 ° C. at 5 ° C./min while maintaining the atmospheric pressure constant, held at 1500 ° C. for 4 hours, and then the electric furnace was cooled to room temperature. .
- ⁇ Acid treatment process> The acid treatment was performed on the annealed ⁇ -sialon with an acid solution of a mixed acid of hydrofluoric acid and nitric acid.
- the temperature of the acid solution was set to 70 ° C.
- the finally obtained precipitate was filtered and dried to obtain ⁇ -sialon of Example 1.
- the obtained ⁇ -sialon was subjected to powder X-ray diffraction (XRD) measurement using Cu K ⁇ rays, and as a result, the crystal phase was a ⁇ -sialon single phase.
- the average particle size determined by a particle size distribution measuring apparatus of laser diffraction scattering method was 13.5 ⁇ m.
- the fluorescence characteristics of the ⁇ -sialon of Example 1 were measured by measuring a fluorescence spectrum under blue light excitation (wavelength 455 nm) using a spectrofluorometer (F7000) manufactured by Hitachi High-Technologies Corporation. The obtained fluorescence spectrum is shown in FIG.
- Table 1 shows the peak values of the fluorescence intensity for each condition and fluorescence intensity.
- the atmosphere of the annealing step is a reducing atmosphere containing a reducing gas, an atmospheric pressure of 1 kPa or more, an atmospheric temperature of 1200 ° C. to 1600 ° C., a processing time of 1 hour to 24 hours, and the reducing atmosphere is hydrogen. It has been found that a gas is preferred.
- Comparative Example 1 ⁇ -sialon was produced by exactly the same method as in Example 1 except that the atmosphere of the annealing treatment was argon gas. As a result of XRD measurement, the crystal phase was a ⁇ -type sialon single phase, and the average particle size determined by the particle size distribution measuring apparatus was 13.8 ⁇ m.
- FIG. 1 shows a fluorescence spectrum of the obtained ⁇ -sialon measured by the same method as in Example 1. Since the fluorescence spectrum changes depending on the measurement apparatus and conditions, the measurement was performed under the same conditions as in Example 1, without leaving time from the measurement in Example 1. As shown in FIG. 1, the fluorescence intensity was improved by using a reducing hydrogen gas as the annealing atmosphere after firing.
- Comparative Examples 2 and 3 In Comparative Example 2, ⁇ -sialon was produced in the same manner as in Example 1 except that the atmospheric pressure in the annealing step was changed to 0.5 kPa lower than 1 kPa. In Comparative Example 3, ⁇ -sialon was produced in the same manner as in Example 1 except that the temperature in the annealing process was set to 1650 ° C., which is larger than 1600 ° C. In any case, the partial decomposition of ⁇ -sialon progressed during the annealing process, and the fluorescence characteristics were greatly deteriorated.
- Examples 2 to 5 In Examples 2 to 5, ⁇ -sialon was produced under exactly the same conditions as in Example 1 except for the points shown in Table 1.
- Example 1 Although not shown in the table, when the reducing gas of Example 1 was replaced with ammonia gas, hydrocarbon gas, and carbon monoxide gas, ⁇ -sialon having a fluorescence spectrum almost similar to that of Example 1 was obtained. could be manufactured.
- the ⁇ -sialon obtained by the present invention is excited with a wide wavelength range from ultraviolet to blue light and exhibits high luminance green light emission, it can be suitably used as a phosphor of a white LED used as a blue or ultraviolet light source.
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- Engineering & Computer Science (AREA)
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- Luminescent Compositions (AREA)
Abstract
Description
混合工程は、原料粉末としての、α型窒化ケイ素(宇部興産株式会社製SN-E10グレード、酸素含有量1.0質量%)、窒化アルミニウム粉末(トクヤマ株式会社製Fグレード、酸素含有量0.8質量%)、酸化アルミニウム粉末(大明化学株式会社製TM-DARグレード)、酸化ユーロピウム粉末(信越化学工業株式会社製RUグレード)を混練する工程である。混練時の配合比は、β型サイアロンの一般式:Si6-zAlzOzN8-zにおいて、酸化ユーロピウムを除いて、z=0.24となるように設計し、酸化ユーロピウムは原料全体の0.8質量%とした。
焼成工程では、得られた原料を、蓋付きの円筒型窒化ホウ素製容器(電気化学工業株式会社製N-1グレード)に充填し、カーボンヒーターの電気炉で0.85MPaの加圧窒素雰囲気中、2000℃で14時間の環境下に置いてβ型サイアロンを生成した。
アニール工程は、β型サイアロンを円筒型窒化ホウ素製容器に充填し、タングステンヒーターの炉内が全てメタル(炉内部材がタングステン及びモリブデンの高融点金属で構成されている))製の電気炉で行った。β型サイアロンを電気炉にセットした後、電気炉内を5Pa以下まで真空排気し、真空状態で1000℃まで20℃/分で昇温した後、電気炉内に水素ガスを導入し、電気炉内を0.15MPaにした。さらに水素ガスを電気炉内に導入し、雰囲気圧力を一定に保ったまま、1500℃まで5℃/分で昇温し、1500℃で4時間保持し、その後、室温まで電気炉内を冷却した。
酸処理は、アニールしたβ型サイアロンに対し、フッ化水素酸と硝酸の混酸の酸溶液で行った。酸溶液の温度は、70℃に設定した。この酸処理後のβ型サイアロンを、沈殿させ、上澄み及び微粉を除去し、更に蒸留水を加え、撹拌及び静置をし、上澄みと微粉を除去するデカンテーションを溶液が中性になるまで繰り返し、最終的に得られた沈殿物をろ過、乾燥し、実施例1のβ型サイアロンを得た。
比較例1では、アニール処理の雰囲気をアルゴンガスとした以外は、実施例1と全く同じ方法によりβ型サイアロンを製造した。XRD測定の結果、結晶相はβ型サイアロン単相であり、上記粒度分布測定装置により求めた平均粒径は13.8μmであった。
比較例2では、アニール工程での雰囲気圧力を1kPaより低い0.5kPaとした以外は、実施例1と同様にβ型サイアロンを製造した。比較例3は、アニール工程での温度を1600℃より大きい1650℃にした以外は、実施例1と同様にβ型サイアロンを製造した。いずれでも、アニール工程でβ型サイアロンの一部分解が進行し、蛍光特性が大幅に低下してしまった。
実施例2乃至5では、表1に示す点を除き、実施例1と全く同じ条件でβ型サイアロンを製造した。
Claims (5)
- ケイ素、アルミニウム及びユーロピウムを含有する原料粉末を混合する混合工程と、混合して得た原料を不活性ガス又は非酸化性ガスの雰囲気下で焼成して一般式:Si6-zAlzOzN8-z:Eu(0<z<4.2)で示されるβ型サイアロンを生成する焼成工程と、生成したβ型サイアロンをアニール処理するアニール工程と、アニール処理したβ型サイアロンを酸溶液に浸す酸処理工程と、を有するβ型サイアロン蛍光体の製造方法であって、アニール処理は、還元性雰囲気下、雰囲気圧力が1kPa以上10MPa以下、雰囲気温度1200℃以上1600℃以下、処理時間1時間以上24時間以下で行うβ型サイアロンの製造方法。
- 前記還元性雰囲気が水素ガスである請求項1記載のβ型サイアロンの製造方法。
- 前記還元性雰囲気が、還元性ガスと不活性ガスの混合ガスであり、混合ガス中の水素ガス濃度が1体積%以上である請求項1記載のβ型サイアロンの製造方法。
- 前記酸処理工程の酸溶液が、少なくともフッ化水素酸と硝酸を含む混酸である請求項1乃至3のいずれか一項記載のβ型サイアロンの製造方法。
- 焼成は、1850℃以上の温度の雰囲気で行う請求項1乃至4のいずれか一項記載のβ型サイアロンの製造方法。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/825,866 US20130300014A1 (en) | 2010-09-27 | 2011-04-21 | PROCESS FOR PRODUCTION OF beta-SIALON |
| KR1020137009081A KR101725857B1 (ko) | 2010-09-27 | 2011-04-21 | β형 사이알론의 제조 방법 |
| EP11828519.6A EP2623580B1 (en) | 2010-09-27 | 2011-04-21 | Process for production of beta-sialon |
| JP2012536243A JP5730319B2 (ja) | 2010-09-27 | 2011-04-21 | β型サイアロンの製造方法 |
| CN201180046132.2A CN103168086B (zh) | 2010-09-27 | 2011-04-21 | β 型赛隆的制备方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010215759 | 2010-09-27 | ||
| JP2010-215759 | 2010-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012042957A1 true WO2012042957A1 (ja) | 2012-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2011/059780 Ceased WO2012042957A1 (ja) | 2010-09-27 | 2011-04-21 | β型サイアロンの製造方法 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20130300014A1 (ja) |
| EP (1) | EP2623580B1 (ja) |
| JP (1) | JP5730319B2 (ja) |
| KR (1) | KR101725857B1 (ja) |
| CN (1) | CN103168086B (ja) |
| TW (1) | TWI518169B (ja) |
| WO (1) | WO2012042957A1 (ja) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017104140A1 (en) * | 2015-12-15 | 2017-06-22 | Nichia Corporation | Method for producing beta-sialon fluorescent material |
| JP2017110206A (ja) * | 2015-12-15 | 2017-06-22 | 日亜化学工業株式会社 | βサイアロン蛍光体の製造方法 |
| JP2022013281A (ja) * | 2020-07-03 | 2022-01-18 | デンカ株式会社 | β型サイアロン蛍光体の製造方法、波長変換部材の製造方法、及び発光装置の製造方法 |
| WO2022024720A1 (ja) * | 2020-07-30 | 2022-02-03 | デンカ株式会社 | 蛍光体粒子、複合体、波長変換部材およびプロジェクタ |
| US11427758B2 (en) | 2015-12-15 | 2022-08-30 | Nichia Corporation | Method for producing β-sialon fluorescent material |
| JP2022148407A (ja) * | 2021-03-24 | 2022-10-06 | デンカ株式会社 | β型サイアロン蛍光体粉末の製造方法 |
| JP2022148419A (ja) * | 2021-03-24 | 2022-10-06 | デンカ株式会社 | β型サイアロン蛍光体粉末および発光装置 |
| US11512248B2 (en) | 2019-09-27 | 2022-11-29 | Nichia Corporation | Method of producing beta-sialon fluorescent material |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102353443B1 (ko) | 2014-12-22 | 2022-01-21 | 삼성전자주식회사 | 산질화물계 형광체 및 이를 포함하는 백색 발광 장치 |
| US12264274B2 (en) | 2019-08-20 | 2025-04-01 | Denka Company Limited | Beta-sialon phosphor and light emitting device |
| CN118256236A (zh) * | 2019-08-20 | 2024-06-28 | 电化株式会社 | β型塞隆荧光体粒子和发光装置 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007066733A1 (ja) * | 2005-12-08 | 2007-06-14 | National Institute For Materials Science | 蛍光体とその製造方法および発光器具 |
| WO2008062781A1 (en) | 2006-11-20 | 2008-05-29 | Denki Kagaku Kogyo Kabushiki Kaisha | Fluorescent substance and production method thereof, and light emitting device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3921545B2 (ja) * | 2004-03-12 | 2007-05-30 | 独立行政法人物質・材料研究機構 | 蛍光体とその製造方法 |
| JP4890162B2 (ja) | 2006-09-07 | 2012-03-07 | 本田技研工業株式会社 | 車両における電気機器の冷却構造 |
| EP2213711B1 (en) * | 2007-10-10 | 2017-04-19 | Ube Industries, Ltd. | -sialon phosphor powder and process for production of the same |
| JP5832713B2 (ja) * | 2008-04-14 | 2015-12-16 | 日亜化学工業株式会社 | 蛍光体及びこれを用いた発光装置並びに蛍光体の製造方法 |
| US8487393B2 (en) * | 2009-06-09 | 2013-07-16 | Denki Kagaku Kogyo Kabushiki Kaisha | B-sialon phosphor, use thereof and method for producing same |
-
2011
- 2011-04-21 KR KR1020137009081A patent/KR101725857B1/ko not_active Expired - Fee Related
- 2011-04-21 US US13/825,866 patent/US20130300014A1/en not_active Abandoned
- 2011-04-21 CN CN201180046132.2A patent/CN103168086B/zh active Active
- 2011-04-21 WO PCT/JP2011/059780 patent/WO2012042957A1/ja not_active Ceased
- 2011-04-21 EP EP11828519.6A patent/EP2623580B1/en not_active Not-in-force
- 2011-04-21 JP JP2012536243A patent/JP5730319B2/ja active Active
- 2011-07-29 TW TW100126901A patent/TWI518169B/zh active
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| WO2007066733A1 (ja) * | 2005-12-08 | 2007-06-14 | National Institute For Materials Science | 蛍光体とその製造方法および発光器具 |
| WO2008062781A1 (en) | 2006-11-20 | 2008-05-29 | Denki Kagaku Kogyo Kabushiki Kaisha | Fluorescent substance and production method thereof, and light emitting device |
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| KR102073214B1 (ko) | 2015-12-15 | 2020-02-05 | 니치아 카가쿠 고교 가부시키가이샤 | 베타-시알론 형광체를 제조하는 방법 |
| WO2017104140A1 (en) * | 2015-12-15 | 2017-06-22 | Nichia Corporation | Method for producing beta-sialon fluorescent material |
| JP2017145427A (ja) * | 2015-12-15 | 2017-08-24 | 日亜化学工業株式会社 | βサイアロン蛍光体の製造方法 |
| KR20180083884A (ko) * | 2015-12-15 | 2018-07-23 | 니치아 카가쿠 고교 가부시키가이샤 | 베타-시알론 형광체를 제조하는 방법 |
| US10385267B2 (en) | 2015-12-15 | 2019-08-20 | Nichia Corporation | Method for producing β-sialon fluorescent material |
| JP2020002383A (ja) * | 2015-12-15 | 2020-01-09 | 日亜化学工業株式会社 | βサイアロン蛍光体の製造方法 |
| JP2017110206A (ja) * | 2015-12-15 | 2017-06-22 | 日亜化学工業株式会社 | βサイアロン蛍光体の製造方法 |
| AU2016373767B2 (en) * | 2015-12-15 | 2021-04-08 | Nichia Corporation | Method for producing beta-sialon fluorescent material |
| US11427758B2 (en) | 2015-12-15 | 2022-08-30 | Nichia Corporation | Method for producing β-sialon fluorescent material |
| JP7022292B2 (ja) | 2015-12-15 | 2022-02-18 | 日亜化学工業株式会社 | βサイアロン蛍光体の製造方法 |
| JP2021042395A (ja) * | 2015-12-15 | 2021-03-18 | 日亜化学工業株式会社 | βサイアロン蛍光体の製造方法 |
| US11512248B2 (en) | 2019-09-27 | 2022-11-29 | Nichia Corporation | Method of producing beta-sialon fluorescent material |
| US11753302B2 (en) | 2019-09-27 | 2023-09-12 | Nichia Corporation | Method of producing beta-sialon fluorescent material |
| JP7507018B2 (ja) | 2020-07-03 | 2024-06-27 | デンカ株式会社 | β型サイアロン蛍光体の製造方法、波長変換部材の製造方法、及び発光装置の製造方法 |
| JP2022013281A (ja) * | 2020-07-03 | 2022-01-18 | デンカ株式会社 | β型サイアロン蛍光体の製造方法、波長変換部材の製造方法、及び発光装置の製造方法 |
| WO2022024720A1 (ja) * | 2020-07-30 | 2022-02-03 | デンカ株式会社 | 蛍光体粒子、複合体、波長変換部材およびプロジェクタ |
| JPWO2022024720A1 (ja) * | 2020-07-30 | 2022-02-03 | ||
| JP2022148419A (ja) * | 2021-03-24 | 2022-10-06 | デンカ株式会社 | β型サイアロン蛍光体粉末および発光装置 |
| JP2022148407A (ja) * | 2021-03-24 | 2022-10-06 | デンカ株式会社 | β型サイアロン蛍光体粉末の製造方法 |
| JP7676175B2 (ja) | 2021-03-24 | 2025-05-14 | デンカ株式会社 | β型サイアロン蛍光体粉末および発光装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20130088152A (ko) | 2013-08-07 |
| JPWO2012042957A1 (ja) | 2014-02-06 |
| CN103168086B (zh) | 2014-10-22 |
| EP2623580B1 (en) | 2017-08-23 |
| KR101725857B1 (ko) | 2017-04-11 |
| EP2623580A4 (en) | 2014-10-01 |
| EP2623580A8 (en) | 2013-09-25 |
| EP2623580A1 (en) | 2013-08-07 |
| US20130300014A1 (en) | 2013-11-14 |
| JP5730319B2 (ja) | 2015-06-10 |
| TW201213508A (en) | 2012-04-01 |
| TWI518169B (zh) | 2016-01-21 |
| CN103168086A (zh) | 2013-06-19 |
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