JPS5549833A - Manufacturing method of sintering type electrode for discharge lamp - Google Patents

Manufacturing method of sintering type electrode for discharge lamp

Info

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
Application number
JP10912678A
Other languages
Japanese (ja)
Inventor
Osamu Yamazaki
Ryozo Akiyama
Shoji Makuuchi
Shiichiro Yoshizaki
Tadashi Morita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP10912678A priority Critical patent/JPS5549833A/en
Priority to AU50116/79A priority patent/AU527753B2/en
Priority to GB7929191A priority patent/GB2034106B/en
Priority to DE19792935447 priority patent/DE2935447C2/en
Priority to NL7906581A priority patent/NL179432C/en
Priority to HUTO001115 priority patent/HU181975B/en
Publication of JPS5549833A publication Critical patent/JPS5549833A/en
Pending legal-status Critical Current

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
JP10912678A 1978-09-07 1978-09-07 Manufacturing method of sintering type electrode for discharge lamp Pending JPS5549833A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6172453B1 (en) * 1993-03-17 2001-01-09 Tdk Corporation Discharge lamp electrode

Cited By (1)

* Cited by examiner, † Cited by third party
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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