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Solid‐Liquid Reactions in the System Si 3 N 4 –β‐SiAlON–Y 3 Al 5 O 12
Author(s) -
Wisnudel Michele,
Tien TsengYing
Publication year - 1994
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.1151-2916.1994.tb04657.x
Subject(s) - sialon , solid solution , materials science , scanning electron microscope , tie line , crystallography , x ray crystallography , phase (matter) , liquid phase , phase diagram , diffraction , analytical chemistry (journal) , mineralogy , thermodynamics , chemistry , metallurgy , ceramic , chromatography , optics , composite material , power (physics) , physics , electric power system , organic chemistry
Solid‐liquid equilibria in the system Si,Al,Y/N,0 were determined for the compatibility triangle bounded by the β‐SiAlON solid‐solution line and the compound Y 3 Al 5 O 12 . X‐ray diffraction was used to determine the crystalline phases present in the equilibrated, rapidly cooled specimens. The liquid phase was quantified with volume fraction measurements performed on scanning electron micrographs. The solid‐liquid tie lines at 1650° and 1750°C were established from lattice parameters of the β‐SiAlON phase and from the amount of liquid phase in equilibrium with the crystalline solid. The liquid phase was crystallized to verify the location of the starting composition.