CHEMICAL STABILITY AND DEGRADATION OF MHD ELECTRODES.

H. K. Bowen, J. W. Halloran, William Petuskey

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Scopus citations

Abstract

Open-cycle, coal-fired MHD electrical power generators require high temperature (1300-1800 degree C) electrodes. The problems in long term stability of the electrodes are related to the high operating temperature, chemical compatibility with the alkali rich slag-seed mixture, and the dc-current extraction. The basic requirements for electrodes are defined and seven candidate materials, which all have adequate electrical conductivity, are discussed. The chemical stability programs for these systems with respect to temperature and sulfur and oxygen pressures are given. The stability with respect to other elements such as potassium is also discussed. Estimations of the rate of degradation are given. The concept of stabilizing or protecting the electrode at the high temperature and in the corrosive MHD environment is being pursued.

Original languageEnglish (US)
Title of host publicationUnknown Host Publication Title
Place of PublicationPrinceton, NJ
PublisherElectrochem Soc, Corros Div
Pages179-211
Number of pages33
StatePublished - 1974
Externally publishedYes
EventCorros Probl in Energy Convers and Gener, Symp, Proc - New York City, NY, USA
Duration: Oct 15 1974Oct 17 1974

Other

OtherCorros Probl in Energy Convers and Gener, Symp, Proc
CityNew York City, NY, USA
Period10/15/7410/17/74

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Bowen, H. K., Halloran, J. W., & Petuskey, W. (1974). CHEMICAL STABILITY AND DEGRADATION OF MHD ELECTRODES. In Unknown Host Publication Title (pp. 179-211). Electrochem Soc, Corros Div.