EP 2226828 A1 20100908 - COLD CATHODE AND A METHOD FOR THE PRODUCTION THEREOF
Title (en)
COLD CATHODE AND A METHOD FOR THE PRODUCTION THEREOF
Title (de)
KALTKATHODE UND VERFAHREN ZU IHRER HERSTELLUNG
Title (fr)
CATHODE FROIDE ET PROCÉDÉ DE FABRICATION CORRESPONDANT
Publication
Application
Priority
RU 2007000757 W 20071228
Abstract (en)
The invention relates to the electronic engineering and, more specifically, to the fields thereof where the physical phenomenon of electron, or ion-electron, or cold emission is used, and concerns a cold cathode and a method for fabricating the same. Provided is a method for fabricating a cold cathode, according to which a cathode workpiece of a metal or alloy is subjected to severe plastic deformation to transform an initial structure of the workpiece into a fragmented structure comprising fragments of nanometric size or into a mixed structure comprising grains and fragments of nanometric size, characterized in that , after the severe plastic deformation, the cathode workpiece is subjected to a low-temperature annealing for transforming at least part of said fragments into grains of nanometric size at a temperature not lower than the operating temperature T oper of the cathode. The invention is an improvement of the method for fabricating a cold cathode using severe plastic deformation and allows to further enhance efficiency of the cathode via a reduction in the electronic work function value.
IPC 8 full level
CPC (source: EP)
H01J 1/304 (2013.01); H01J 9/025 (2013.01); H01J 2201/304 (2013.01)
Citation (search report)
See references of WO 2009084976A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 07873394 A 20071228; RU 2007000757 W 20071228