Electron tube cathode

Details Electron tube cathode Electron tube cathode

H - Electricity

01

J

117/157, 313/187

H01J 29/04 (2006.01) B05D 5/12 (2006.01) C23C 28/00 (2006.01) H01J 1/142 (2006.01)

Patent

CA 2037675

ABSTRACT OF THE DISCLOSURE The life characteristics of an electron tube cathode in the operation at a high current density are enhanced. A metal layer of not more than 2.0 µm thick is formed on a base containing nickel as the main ingredient and a reducing agent such as silicon and magnesium by depositing tungsten by an electron beam under heating in a vacuum. The base is heat treated in a hydrogen atmosphere at 800 to 1,100°C. An emissive material layer containing an alkali earth metal oxide and 0.01 to 25 wt% of a rare earth metal oxide, the alkali earth metal oxide containing at least barium oxide, is formed on the metal layer. the life characteristics of the cathode especially during the operation at a high current density such as not less than 2A/cm2 are greatly enhanced.

Affiliated with

Also associated with

Rating

Electron tube cathode does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electron tube cathode, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron tube cathode will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1588468