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Phase Equilibria in the Systems SrO‐CuO and SrO‐1/2Bi 2 O 3
Author(s) -
Hwang g M.,
Roth Robert S.,
Rawn Claudia J.
Publication year - 1990
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.1151-2916.1990.tb07628.x
Subject(s) - phase (matter) , x ray crystallography , chemistry , analytical chemistry (journal) , diffraction , powder diffraction , mineralogy , crystallography , materials science , chromatography , physics , organic chemistry , optics
The phase equilibria of the systems SrO‐CuO and SrO‐1/2Bi 2 O 3 were studied by X‐ray diffraction analysis of quenched powder samples. The compounds SrCuO 2 and Sr 2 CuO 3 melt incongruently at 1085° and 1225°C, respectively. The newly found compound Sr 6 Bi 2 O 9 decomposes at 965°C into SrO and Sr 3 Bi 2 O 6 melts incongruently into SrO and liquid at 1210°C. SrBi 2 O 4 undergoes a phase transition at ∼825°C, and although both are nonstoichiometric, the low‐temperature phase is slightly poorer in SrO with 33.5 mol% SrO than the high‐temperature phase.