Paper Title:
New Style Thin Film Cathode Materials of Rare Earth Oxide Sintered by Spark Plasma Sintering (SPS)
  Abstract

The molybdenum powder doped with rare earth oxide was processed by powder metallurgy method and a new style thin film cathode material was firstly processed by Spark Plasma Sintering (SPS) method in this paper. The secondary emission property of such kind of cathode materials were studied, the maxim secondary emission coefficient after the material was activated at 1600°C reached to 3.84 about double that of traditional cathode materials application in magneto. The microstructure, element analysis and phase constitution of materials before and after the secondary emission property was measured were studied through SEM, EDAX and XRD. The results show that a rare earth layer about 5um thickness was created after the material was activated at 1600°C. The material grain size is about 1 um or even smaller and the distribution of elements in such materials is even.

  Info
Periodical
Key Engineering Materials (Volumes 280-283)
Edited by
Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
Pages
553-556
DOI
10.4028/www.scientific.net/KEM.280-283.553
Citation
H.Y. Li, J. S. Wang, M. L. Zhou, X. D. Bai, "New Style Thin Film Cathode Materials of Rare Earth Oxide Sintered by Spark Plasma Sintering (SPS)", Key Engineering Materials, Vols. 280-283, pp. 553-556, 2005
Online since
February 2007
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