发明名称 |
Tungsten-lanthana alloy wire for a vibration resistant lamp filament |
摘要 |
A wire for fabrication of a vibration resistant filament for an incandescent lamp. The wire includes about 0.05-1.00 weight percent lanthanum oxide dispersed in a tungsten matrix and has a microstructure including stringers of fine particles of lanthanum oxide extending parallel to the wire axis. During primary recrystallization of a vibration resistant lamp filament from the filament wire, the stringers produce a microstructure in the filament exhibiting sufficient grain boundary segments extending generally axially along the length of the filament to render the filament resistant to vibration. A method for producing a vibration resistant filament for an incandescent lamp is also disclosed.
|
申请公布号 |
US5604321(A) |
申请公布日期 |
1997.02.18 |
申请号 |
US19950507184 |
申请日期 |
1995.07.26 |
申请人 |
OSRAM SYLVANIA INC. |
发明人 |
PATRICIAN, THOMAS J.;MARTIN, III, HARRY D. |
分类号 |
C22C1/10;C22C32/00;C22F1/18;H01K1/10;(IPC1-7):B22F5/12;C22C27/04 |
主分类号 |
C22C1/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|