JPS55161880A - Production of europium-activated strontium magnesium fluoroborate - Google Patents
Production of europium-activated strontium magnesium fluoroborateInfo
- Publication number
- JPS55161880A JPS55161880A JP7047979A JP7047979A JPS55161880A JP S55161880 A JPS55161880 A JP S55161880A JP 7047979 A JP7047979 A JP 7047979A JP 7047979 A JP7047979 A JP 7047979A JP S55161880 A JPS55161880 A JP S55161880A
- Authority
- JP
- Japan
- Prior art keywords
- europium
- strontium
- fluoride
- magnesium
- carbonate
- 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
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Luminescent Compositions (AREA)
Abstract
PURPOSE: To produce a phosphor having a homogeneous chemical composition and stabilized fluorescent brightness, by firing a borate prepared by reacting magnesium carbonate or strontium carbonate with a fluoride, europium oxide and boric acid.
CONSTITUTION: Boric acid is added to a suspension prepared by mixing deionized water, magnesium carbonate or strontium carbonate, magnesium fluoride or strontium fluoride, and europium oxide, and the resulting mixture is heated to precipitate a borate. The precipitate produced is filtered by suction, dried and fired in an oxidizing atmosphere at about 700W900°C in an electric furnace. The fired product is ground and refired in an atmosphere of H2, N2 at 700W900°C, thereby to produce a europium-activated strontium magnesium fluoroborate phosphor represented by the formula.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7047979A JPS55161880A (en) | 1979-06-05 | 1979-06-05 | Production of europium-activated strontium magnesium fluoroborate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7047979A JPS55161880A (en) | 1979-06-05 | 1979-06-05 | Production of europium-activated strontium magnesium fluoroborate |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55161880A true JPS55161880A (en) | 1980-12-16 |
Family
ID=13432690
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7047979A Pending JPS55161880A (en) | 1979-06-05 | 1979-06-05 | Production of europium-activated strontium magnesium fluoroborate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55161880A (en) |
-
1979
- 1979-06-05 JP JP7047979A patent/JPS55161880A/en active Pending
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