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 


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Copyright information

© Plenum Press, New York 1981

Authors and Affiliations

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

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