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Phase Equilibria in the System CaO‐MgO‐B 2 O 3 at 900°C
Author(s) -
FLETCHER B. L.,
STEVENSON J. R.,
WHITAKER A.
Publication year - 1970
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.1151-2916.1970.tb12018.x
Subject(s) - isothermal process , phase diagram , solid solution , diffraction , ternary numeral system , powder diffraction , ternary operation , phase (matter) , materials science , x ray crystallography , binary number , thermodynamics , phase equilibrium , binary system , analytical chemistry (journal) , mineralogy , crystallography , chemistry , metallurgy , physics , optics , chromatography , programming language , arithmetic , mathematics , organic chemistry , computer science
Phase equilibria in the system CaO‐MgO‐B 2 O 3 were investigated at 900°C using X‐ray powder diffraction techniques. With the exception of MgO‐B 2 O 3 , the binary phases reported previously were confirmed, but no ternary phases were found. Solid solution effects were investigated for the binary phases by comparison of patterns, whereas for CaO and MgO, accurate lattice parameters were compared. No solid solutions were detected. As a result, the isothermal equilibrium diagram at 900°C reduces to three phase triangles. X‐ray powder diffraction data for the calcium berates are included.