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Chemical potentials of oxygen for three‐phase assemblages of CaSiO 3 (s) + Ca 3 Si 2 O 7 (s) + {CaO + SiO 2 + Fe x O} melt and Ca 3 Si 2 O 7 (s) + Ca 2 SiO 4 (s) + {CaO + SiO 2 + Fe x O} melt
Author(s) -
Takeuchi Kotaro,
Enaka Takashi,
Konno Norimitsu,
Hosotani Yozo,
Orimoto Takashi,
Iwase Masanori
Publication year - 1997
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199701709
Subject(s) - analytical chemistry (journal) , oxygen , bar (unit) , phase (matter) , electrolyte , electrochemistry , mineralogy , materials science , chemistry , electrode , physics , meteorology , organic chemistry , chromatography
By employing an electrochemical technique involving stabilized zirconia as solid electrolyte and Mo + MoO 2 mixture as reference electrode, the equilibrium oxygen partial pressures for three‐phase assemblages of CaSiO 3 (s) + Ca 3 Si 2 O 7 (s) + {CaO + SiO 2 + Fe x O} melt and Ca 3 Si 2 O 7 (s) + Ca 2 SiO 4 (s) + {CaO + SiO 2 + Fe x O} melt were determined as: ‐ log { P O2 (CS + C 3 S 2 + L)/bar} = ‐ 3.22 13000/( T /K) ± 0.05 ‐ log { P O2 (C 3 S 2 + C 2 S + L)/bar} = ‐ 0.92 16400/ ( T /K) ± 0.04. respectively, where CS, C 3 S 2 and C 2 S indicate CaSiO 3 (s), Ca 3 Si 2 O 7 (s). and Ca 2 SiO 4 (s), respectively.