Electrode surface treatment process

Details Electrode surface treatment process Electrode surface treatment process

H - Electricity

01

J

H01J 61/04 (2006.01) H01J 1/88 (2006.01) H01J 5/32 (2006.01) H01J 61/073 (2006.01) H01J 61/36 (2006.01)

Patent

CA 2342420

The invention relates to a tungsten electrode which causes minimal cracking when sealed in a quartz glass envelope. The invention includes forming a substantially uniform oxide coating on a selected portion of the shank of a tungsten electrode followed by reducing the oxide coating to substantially elemental tungsten, wherein the electrode exhibits superior properties when sealed in a lamp having a quartz glass envelope. The invention also includes the electrode made by the process.

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