2017•Unpublished venueRequires access

High brightness Carbide Tungsten field emission cathode

Ryotaro Yamanashi, Yoichiro Neo, Hidenori Mimura

Abstract

High brightness and stable cathode has been required for SEM use. We have been studied about Tungsten Carbide (WC) field emission cathode to achieve low-cost and easy to use, high brightness cathode. Tungsten carbide layer is formed on W-FE tip by heating in Ethylene(C2H4) gas. This WC field emission cathode indicated low work function.

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Available abstract

Key concepts: Cathode, Brightness, Tungsten carbide, Tungsten, Work function, Materials science, Carbide, Field electron emission