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Morphology and Stability of the Glass Phase in Glass Ceramic Systems
Author(s) -
RAJ RISHI
Publication year - 1981
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.1151-2916.1981.tb09596.x
Subject(s) - supercooling , dihedral angle , materials science , phase (matter) , morphology (biology) , ceramic , glass ceramic , composite material , mineralogy , solidus , thermodynamics , chemistry , geology , physics , paleontology , hydrogen bond , organic chemistry , alloy , molecule
An explanation is given for the apparent stability of a minor phase in a two‐phase system, such as a glass in a glass ceramic, even though normally the glass would be expected to dissolve completely into the crystalline phase. It is shown that the glass would be stable only if it is segregated to the triple‐junction nodes and only if the dihedral angle is <π/3. The size and morphology of the glass pocket are obtained in terms of the interface energies, the undercooling below the solidus temperature, and the dihedral angle.