DIFFUSION AND INTERFACE STUDIES ON CATHODE SLEEVE NICKEL.
Abstract
The report summarizes studies performed to enhance the understanding of the processes controlling the properties of the oxide cathode. The diffusion coefficients of Al, Mg, Mn, and W added singly to nickel have been determined and are summarized. The development of a highly resistive interface compound is observed for Si-Ni alloys; no significant interface resistance was regularly found for single-additive alloy bases of Al, Mg, Mn and W in Ni. The deactivation of oxide-coated cathodes, and subsequent recovery, is described where the deactivation results from the electron bombardment of a contaminated electrode. The activation of a passive-based oxide-coated cathode by electrolysis of the coating is described. Passage of current results in a permanent enhancement of the thermionic emission if the electrolytic activation proceeds for a sufficient period of time without competing deactivation processes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1961
- Accession Number
- AD0638207
Entities
People
- D. E. Anderson
Organizations
- University of Minnesota