Interfacially Controlled Phenomena in the System K2CO3-KA1O2

  • Lawrence P. Cook
Part of the Materials Science Research book series (MSR, volume 14)


Potassium carbonate has become of special interest to a number of ceramists because of its use as ionizing seed material which is added to combustion gases to produce a conductive plasma in magneto-hydrodynamic electrical power generators. In this high temperature environment, chemical interaction occurs not only with ceramic components of the system such as electrodes and insulators, but also with the mineral ash of the coal used to fuel the generator. As a result, potassium aluminate is an important component of the slags accummulating in such generators [1–3]. The system K2CO3-KA1O2 is under investigation as part of a more general study of potassium carbonate — slag interaction. This note is a summary of some preliminary observations on the phase equilibria of K2CO3-KA1O2 with focus on the unusual melting behavior of K2CO3/KA1O2 mixtures, which appears to have its origin in interfacial interaction.


Potassium Carbonate Powder Pattern JANAF Thermochemical Table Extra Line Potassium Aluminate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    E. R. Plante and L. P. Cook, Proc. 17th Symp. Eng. Aspects Magnetohydrodynamic Electrical Power Generation, Stanford, C.1.1. (1978).Google Scholar
  2. 2.
    L. P. Cook, 7th Int. Conf. on Magnetohydrodynamic Electrical Power Generation, Cambridge, Mass., V. 1, 212 (1980).Google Scholar
  3. 3.
    L. P. Cook, R. S. Roth, H. S. Parker, and T. Negas, Am. Mineral., 62 1180 (1977).Google Scholar
  4. 4.
    D. K. Smith, Norelco Reporter, 10 19 (1963).Google Scholar
  5. 5.
    A. Bon, C. Gleitzer, A. Courtois and J. Protas, C. R. Acad. Sci. Paris, 278C 785 (1974).Google Scholar
  6. 6.
    JANAF Thermochemical Tables, 2nd Ed., NSRDS-NBS 37, U.S. Dept. Commerce (1971).Google Scholar
  7. 7.
    R. S. Roth, Advances In Chemistry Series, Amer. Chem. Soc, Washington, D.C. (in press).Google Scholar
  8. 8.
    F. E. Spencer, J. C. Hendrie, Jr., and D. Bienstock, 6th Int. Conf. on Magnetohydrodynamic Electrical Power Generation, Washington, D.C., V. 2, 181 (1975).Google Scholar
  9. 9.
    C. L. McDaniel, Nat. Bur. Stand., pers. comm. (1980).Google Scholar
  10. 10.
    E. R. Plante, Nat. Bur. Stand., pers. comm. (1980).Google Scholar
  11. 11.
    P. M. deWolff, File No. 16-280, JCPDS Int. Centre for Diff. Data, Swarthmore, Pa.Google Scholar
  12. 12.
    S. J. Schneider and E. M. Levin, J. Amer. Ceram. Soc, 56 218 (1973).CrossRefGoogle Scholar
  13. 13.
    P. G. de Gennes, The Physics of Liquid Crystals, Oxford Univ. Press, London (1974).Google Scholar
  14. 14.
    B. Dickens and L. W. Schroeder, Nat. Bur. Stand. Tech. Note 893, 71 p. (1976).Google Scholar
  15. 15.
    G. C. Dubbeldam and P. M. deWolff, Acta Cryst., B25 2665 (1969).Google Scholar
  16. 16.
    M. O’Keeffe and B. G. Hyde, Trans. Amer. Crystallog. Assoc, 115 65 (1979).Google Scholar

Copyright information

© Plenum Press, New York 1981

Authors and Affiliations

  • Lawrence P. Cook
    • 1
  1. 1.National Bureau of StandardsUSA

Personalised recommendations