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Contribution to the Interpretation of Phase Diagrams by Ceramists
Author(s) -
FOSTER WlLFRlD R.
Publication year - 1951
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1951.tb11625.x
Subject(s) - phase diagram , ceramic , interpretation (philosophy) , thermodynamics , compatibility (geochemistry) , diagram , materials science , theoretical physics , mineralogy , phase (matter) , computer science , geology , mathematics , physics , metallurgy , composite material , statistics , programming language , quantum mechanics
An attempt is made to eliminate some of the difficulties which hamper the proper use of phase diagrams by ceramists. It is contended that equilibrium is more nearly approached in ceramic bodies than is generally realized. Accordingly, phase diagrams are believed to be capable of more general application than has been previously recognized. The significance of primary fields is discussed, and the harmful results of the overemphasis of these features of phase diagrams are illustrated with examples from the literature. The useful role of the much‐neglected compatibility triangles in the ceramic application of the diagrams is emphasized. The relation of invariant points, melting intervals, and courses of melting to the firing behavior of ceramic bodies is indicated. It is believed that the conclusions drawn largely from the consideration of the MgO–Al 2 O 3 –SiO 2 diagram are of general application, except possibly in the case of the alkalialumina–silica systems.