Title:
【発明の名称】電灯
Document Type and Number:
Japanese Patent JPS5837648
Kind Code:
B2
Abstract:
In electric lamps having a lamp envelope (20) of a type of glass containing at least 95% by weight of SiO2, the current leadthrough conductors (22, 23) usually consist of molybdenum foils to which internal (26, 27) and external (24, 25) current conductors are welded. After welding and upon making the pinch seal (21) of the lamp vessel (20), fracture frequently occurs in the molybdenum foils (22, 23). Molybdenum foils (22, 23) in which yttrium oxide particles are dispersed in a quantity of 1/4-1% of the molybdenum weight, have proved to be considerably stronger than similar thickness molybdenum foils containing no yttrium oxide.
Inventors:
KASURIIN KARUNEE TONPUSONNRATSUSERU
Application Number:
JP15215579A
Publication Date:
August 17, 1983
Filing Date:
November 26, 1979
Export Citation:
Assignee:
FUIRITSUPUSU FURUUIRANPENFUABURIKEN NV
International Classes:
H01J5/46; H01J61/36; H01K1/38; H01K1/40; (IPC1-7): H01J5/46; H01J61/36; H01K1/40
Attorney, Agent or Firm:
Akihide Sugimura