Lifetime Performance of Nanocomposite Scandate Tungsten Cathodes

Nano-composite scandate tungsten cathodes have shown superior performance to other thermionic cathodes. Lifetime emission data is an essential evaluation metric of powder quality for use in vacuum electron devices. Commercially viable large batch scale production of NST powder with lifetime data meeting industry demands will be essential to the vacuum electron device industry. Comparing commercially fabricated NST powder to laboratory NST powder is an evaluation metric for determining powder quality.