JPS5549833A - Manufacturing method of sintering type electrode for discharge lamp - Google Patents
Manufacturing method of sintering type electrode for discharge lampInfo
- Publication number
- JPS5549833A JPS5549833A JP10912678A JP10912678A JPS5549833A JP S5549833 A JPS5549833 A JP S5549833A JP 10912678 A JP10912678 A JP 10912678A JP 10912678 A JP10912678 A JP 10912678A JP S5549833 A JPS5549833 A JP S5549833A
- Authority
- JP
- Japan
- Prior art keywords
- melting point
- emitter
- high melting
- discharge lamp
- firing
- 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
- Discharge Lamp (AREA)
Abstract
PURPOSE: To lower the starting voltage and reduce the variation of light-flux maintenence rate by mixing each fired substance of metals having high melting point, emitter action assisting materials, and emitter components, and by firing the mixture at above a prescribed temperature.
CONSTITUTION: At least one kind of metals having high melting point, such as W, Ta, and Mo, at least one kind of alkaline earth metal salts such as BaCO3, CaCO3 as emitter components, and at least one kind of Y2O3, ZrO2, Al2O3 for supporting emitter action are directly mixed and molding formed. After that, the mixture is fired in a reductive emvironment at the temperature at which the metal having high melting point and alkaline earth metal salt react, 1400W1600°C. Accordingly, firing condition such as firing temperature can be establishel and controlled favourably, and operation starting voltage can be lowered, and the variation of light-flux maintenence rate can be reduced, when the electrode is used for discharge lamp.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10912678A JPS5549833A (en) | 1978-09-07 | 1978-09-07 | Manufacturing method of sintering type electrode for discharge lamp |
AU50116/79A AU527753B2 (en) | 1978-09-07 | 1979-08-21 | Discharge lamp electrode |
GB7929191A GB2034106B (en) | 1978-09-07 | 1979-08-22 | Sintered electrode for discharge lamps |
DE19792935447 DE2935447C2 (en) | 1978-09-07 | 1979-09-01 | Directly heated sintered electrode |
NL7906581A NL179432C (en) | 1978-09-07 | 1979-09-03 | SINTERED ELECTRODE TO BE APPLIED IN A DISCHARGE LAMP AND THAT GIVEN Discharge Lamp. |
HUTO001115 HU181975B (en) | 1978-09-07 | 1979-09-06 | Sintered electrode applicable in discharge lamps and method for making thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10912678A JPS5549833A (en) | 1978-09-07 | 1978-09-07 | Manufacturing method of sintering type electrode for discharge lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5549833A true JPS5549833A (en) | 1980-04-10 |
Family
ID=14502219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10912678A Pending JPS5549833A (en) | 1978-09-07 | 1978-09-07 | Manufacturing method of sintering type electrode for discharge lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5549833A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6172453B1 (en) * | 1993-03-17 | 2001-01-09 | Tdk Corporation | Discharge lamp electrode |
-
1978
- 1978-09-07 JP JP10912678A patent/JPS5549833A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6172453B1 (en) * | 1993-03-17 | 2001-01-09 | Tdk Corporation | Discharge lamp electrode |
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