JPS56168331A - Electrode for electric-discharge lamp - Google Patents

Electrode for electric-discharge lamp

Info

Publication number
JPS56168331A
JPS56168331A JP7204580A JP7204580A JPS56168331A JP S56168331 A JPS56168331 A JP S56168331A JP 7204580 A JP7204580 A JP 7204580A JP 7204580 A JP7204580 A JP 7204580A JP S56168331 A JPS56168331 A JP S56168331A
Authority
JP
Japan
Prior art keywords
substance
oxide
solid solution
members
contact
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
JP7204580A
Other languages
Japanese (ja)
Inventor
Masato Saito
Keiji Watabe
Masahiro Dobashi
Keiji Fukuyama
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7204580A priority Critical patent/JPS56168331A/en
Publication of JPS56168331A publication Critical patent/JPS56168331A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/073—Main electrodes for high-pressure discharge lamps
    • H01J61/0735—Main electrodes for high-pressure discharge lamps characterised by the material of the electrode

Landscapes

  • Discharge Lamp (AREA)

Abstract

PURPOSE:To improve the contact between an electron discharging substance and electrode members by using an electron discharging substance containing not less than two kinds of oxides which form a solid solution, and making the mean grain diameter of an oxide of a high content to be a given times the other oxides. CONSTITUTION:An electron discharging substance 18 prepared by mixing yttrium oxide and lanthanum oxide has a reduced melting point since lanthanum oxide and yttrium oxide form a solid solution. As a result, the contact between the substance 18 and electrode members 15, 16 and 17 is improved, and the separation of the substance 18 from the members 15, 16 and 17 caused during the lighting of an electric- discharge lamp is decreased. The mean diameter of the former yttrium oxide is made 0.2-50 times that of the former lanthanum oxide so as to make actual area of these two compounds to be increased. As a result, a homogeneous solid solution can be formed, and sufficiently close contact between the substance 18 and the members 15, 16 and 17 can be realized. A small amount of either tungsten powder or molybdenum powder may be added to the substance 18.
JP7204580A 1980-05-29 1980-05-29 Electrode for electric-discharge lamp Pending JPS56168331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7204580A JPS56168331A (en) 1980-05-29 1980-05-29 Electrode for electric-discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7204580A JPS56168331A (en) 1980-05-29 1980-05-29 Electrode for electric-discharge lamp

Publications (1)

Publication Number Publication Date
JPS56168331A true JPS56168331A (en) 1981-12-24

Family

ID=13478023

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7204580A Pending JPS56168331A (en) 1980-05-29 1980-05-29 Electrode for electric-discharge lamp

Country Status (1)

Country Link
JP (1) JPS56168331A (en)

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