JPS55155084A - Production of halophosphate fluophor - Google Patents
Production of halophosphate fluophorInfo
- Publication number
- JPS55155084A JPS55155084A JP6360879A JP6360879A JPS55155084A JP S55155084 A JPS55155084 A JP S55155084A JP 6360879 A JP6360879 A JP 6360879A JP 6360879 A JP6360879 A JP 6360879A JP S55155084 A JPS55155084 A JP S55155084A
- Authority
- JP
- Japan
- Prior art keywords
- fluophor
- calcination
- carried out
- titled
- mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Luminescent Compositions (AREA)
Abstract
PURPOSE: To obtain titled fluophor having less attenuation of luminous flux and a good fluorescent efficiency, by conducting primary calcination, adding a flux to the calcined product after grinding and conducting secondary calcination, in producing titled fluophor by mixing predetermined raw material mixture and calcining the mixture.
CONSTITUTION: In producing a halophosphate fluophor by mixing predetermined raw material mixture such as CaHPO4, CaCO3, CaF2, CaCl2, NH4Cl, MnCO3 and Sb2O3 and calcining the mixture, the calcination is carried out in two stages. First, primary calcination is carried out for about 3W5hr at a temperature of about 1,120W1,180°C. The resulting calcination product is ground and charged with a flux such as SbF3, CaF2, CaCl2 or NH4Cl. Then, secondary calcination is carried out a temperature of about 1,120W1,180°C, thereby to eliminate surface roughness of fluophor and to improve crystallinity. Thereby, titled fluophor having a uniform particle size is obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6360879A JPS55155084A (en) | 1979-05-22 | 1979-05-22 | Production of halophosphate fluophor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6360879A JPS55155084A (en) | 1979-05-22 | 1979-05-22 | Production of halophosphate fluophor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55155084A true JPS55155084A (en) | 1980-12-03 |
Family
ID=13234169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6360879A Pending JPS55155084A (en) | 1979-05-22 | 1979-05-22 | Production of halophosphate fluophor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55155084A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62104893A (en) * | 1985-10-31 | 1987-05-15 | Sony Corp | Production of small particle of fluorescent substance |
JPS62265386A (en) * | 1986-04-04 | 1987-11-18 | ゼネラル・エレクトリツク・カンパニイ | Fluorescent lamp using calcium halophosphate phosphor coating |
US5232626A (en) * | 1992-06-22 | 1993-08-03 | Gte Products Corp. | Process for making apatitic phosphors |
-
1979
- 1979-05-22 JP JP6360879A patent/JPS55155084A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62104893A (en) * | 1985-10-31 | 1987-05-15 | Sony Corp | Production of small particle of fluorescent substance |
JPS62265386A (en) * | 1986-04-04 | 1987-11-18 | ゼネラル・エレクトリツク・カンパニイ | Fluorescent lamp using calcium halophosphate phosphor coating |
US5232626A (en) * | 1992-06-22 | 1993-08-03 | Gte Products Corp. | Process for making apatitic phosphors |
US5336437A (en) * | 1992-06-22 | 1994-08-09 | Osram Sylvania Inc. | Process for making apatitic phosphors |
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