Paper Title:
Loss Mechanism of Rare-Earth Tungsten Cathode Applied to High-Temperature Electrostatic Precipitation
  Abstract

Rare-earth tungsten thermionic emission material was used in the high-temperature electrostatic dust removal technology. A static test facility was self-designed to explore the emission characteristic. XRD, SEM and EDS were used to analyze the microstructure and element distribution. Working in high-temperature and oxidizing condition, tungsten in the thermionic emission materials is oxidized to tungsten trioxide, but the rare-earth tungstate in the grain boundary has no chemical changes. In high-temperature and oxidizing ambience, there is oxidation and volatilization on the surface of rare-earth tungsten, resulting in materials loss. The degree of loss depends on the composition of gas.

  Info
Periodical
Advanced Materials Research (Volumes 113-116)
Edited by
Zhenyu Du and X.B Sun
Pages
908-912
DOI
10.4028/www.scientific.net/AMR.113-116.908
Citation
J. J. Xu, Z. Z. Gu, X. L. Xi, W. M. Dai, J. J. Liu, "Loss Mechanism of Rare-Earth Tungsten Cathode Applied to High-Temperature Electrostatic Precipitation", Advanced Materials Research, Vols. 113-116, pp. 908-912, 2010
Online since
June 2010
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$32.00
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