An ammonium perrhenate impregnated Ni sponge oxide cathode

Author

Xiaoxia Wang ; Qinglan Zhao ; Jirun Luo ; Xianheng Liao ; Yun Li ; Qi Zhang

Author_Institution

Key Lab. of High Power Microwave Sources & Technol., Inst. of Electron., Beijing, China

fYear

2013

fDate

21-23 May 2013

Firstpage

1

Lastpage

2

Abstract

In this paper we mainly describes the research progress in a kind of ammonium perrhenate impregnated Ni sponge oxide cathode, which includes the preparation of Ni-Re sponge layer by impregnated ammonium perrhenate solution and the cathode properties testing. The testing results show that the pc emission current density of the cathode reaches 35.6A/cm² with a 10μs pulse width at a temperature of 850L and that the emission current, after 3000h lifetime at a temperature of 800L, has decreased less than 5% with 1.63 A/cm² DC current.

Keywords

ammonium compounds; cathodes; hydrogen compounds; nickel compounds; nitrogen compounds; rhenium compounds; NH₄ReO₄; Ni-Re; cathode properties testing; sponge layer preparation; sponge oxide cathode; time 10 mus; time 3000 h; Cathodes; Coatings; Electron tubes; Heating; Nickel; Surface treatment; Temperature; Ammonium perrhenate (NH4Re04); High Emission Current; Lifetime; Oxide Cathode;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2013 IEEE 14th International

Conference_Location

Paris

Print_ISBN

978-1-4673-5976-4

Type

conf

DOI

10.1109/IVEC.2013.6570912

Filename

6570912