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Thermodynamic Evaluation of the Bi‐Cu‐O System
Author(s) -
Hallstedt Bengt,
Risold Daniel,
Gauckler Ludwig J.
Publication year - 1996
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.1151-2916.1996.tb08128.x
Subject(s) - isothermal process , phase diagram , thermodynamics , ternary operation , ternary numeral system , bar (unit) , partial pressure , oxide , diagram , calphad , materials science , binary system , chemistry , binary number , oxygen , phase (matter) , metallurgy , physics , mathematics , computer science , statistics , organic chemistry , arithmetic , meteorology , programming language
A thermodynamic evaluation of the ternary Bi‐Cu‐O system has been made and a set of parameters consistently describing the system at 1 bar total pressure has been determined. The ternary system contains a liquid phase which is continuous at high temperature and separates into a metal liquid and an oxide liquid at low temperature and the ternary compound Bi 2 CuO 4 in addition to the binary compounds. Concentration/temperature diagrams are given for the Bi 2 O 3 ‐CuO x system at oxygen partial pressures of 1, 0.21 and 10 −5 bar, as well as a potential diagram. Selected isothermal sections at 1100 and 1473 K are also presented. Available experimental data are rather limited and often show a relatively large scatter, but nevertheless make it possible to determine a sufficient set of thermodynamic parameters.