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QUANTITATIVE DETERMINATION OF THE GLASSY PHASE IN A CERAMIC BODY*

Authors


  • *

    Presented at the Forty-Fifth Annual Meeting, The American Ceramic Society, Pittsburgh, Pa., April 20, 1943 (White Wares Division).

  • The material in this paper is based on a thesis submitted by the authors in partial fulfillment of the requirements for the degree of Bachelor of Science in Glass Technology, New York State College of Ceramics, Alfred University, Alfred, N. Y., May 12, 1942.

Abstract

A study was made of the amount of glassy bond present in a typical whiteware body after various heat-treatments. Petrographic methods, with polished sections and powder mounts, were used for these determinations.

The results obtained by both methods and by independent observers agreed very well. With the higher firing temperatures, the amount of glass increased and the number of crystals decreased. Pore space diminished as the temperature was raised to the maturing temperature; above that point the pore volume increased.

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