MICROSTRUCTURE AND WORK FUNCTION OF DISPENSER CATHODE COATINGS: EFFECTS ON THERMIONIC EMISSION

Dispenser cathodes emit electrons through thermionic emission and are a critical component of space-based and telecommunication devices. The emission of electrons is enhanced when coated with a refractory metal such as osmium (Os), osmium-ruthenium (Os-Ru), or iridium (Ir). In this work the microstr...

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Bibliographic Details
Main Author: Swartzentruber, Phillip D
Format: Others
Published: UKnowledge 2014
Subjects:
Online Access:http://uknowledge.uky.edu/cme_etds/41
http://uknowledge.uky.edu/cgi/viewcontent.cgi?article=1040&context=cme_etds

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