Title:
DIRECT-HEATED CATHODE STRUCTURE
Document Type and Number:
Japanese Patent JPS5291642
Kind Code:
A
Abstract:
PURPOSE: To prevent oxides such as BaO from peeling-off from a substrate by the provision of a Zr metal layer on the carbonate coated surface of a substrate composed of W-containing Ni alloy.
Inventors:
SANKAKU AKIRA
Application Number:
JP749776A
Publication Date:
August 02, 1977
Filing Date:
January 28, 1976
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H01J1/15; H01J1/13; H01J1/14; (IPC1-7): H01J1/13; H01J1/15
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