Nitriding of zirconium cathode for arc-heater testing in air

被引：9
|
作者：
Momozawa, Ai [1 ]
Taubert, Sven [1 ]
Nomura, Satoshi [1 ]
Komurasaki, Kimiya [1 ]
Arakawa, Yoshihiro [2 ]
机构：
[1] Univ Tokyo, Dept Adv Energy, Chiba 2778561, Japan
[2] Univ Tokyo, Dept Aeronaut & Astronaut, Bunkyo Ku, Tokyo 1138656, Japan
来源：
VACUUM | 2010年 / 85卷 / 05期
关键词：
Plasma; Arc heater; Nitriding; Oxidation; Zirconium cathode; Argon-air mixture gas; Specific enthalpy; LASER-ABSORPTION SPECTROSCOPY; PLASMA;
D O I：
10.1016/j.vacuum.2010.08.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Zirconium cathodes with a nitrided surface layer are promising candidates for arc-heater tests in air because of their good erosion resistance and excellent physical properties Nitriding of a zirconium cathode is performed by a microwave plasma generator Nitrided cathode, yield a stable plasma flow of argon air up to 80 A at a maximum flow rate of 4 l/min argon and 08 l/min air for a long duration The specific input power corresponds to 11 8 MJ/kg During arc-heater testing nitriding is a governing reaction and golden zirconium nitride is formed at the tip of the cathode surface The formation mechanism of a ceramic layer during microwave plasma generator treatment and arc-heater testing will also be discussed (C) 2010 Elsevier Ltd All rights reserved
引用
收藏
页码：591 / 595
页数：5
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