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Redox State of Iron and Its Related Effects in the CaO–P 2 O 5 –Fe 2 O 3 Glasses
Author(s) -
Kumar Binod,
Lin Steve
Publication year - 1991
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.1151-2916.1991.tb07322.x
Subject(s) - oxidizing agent , dissolution , redox , oxidation state , oxygen , analytical chemistry (journal) , mineralogy , absorption (acoustics) , atmosphere (unit) , argon , absorption spectroscopy , inorganic chemistry , chemistry , materials science , metallurgy , environmental chemistry , thermodynamics , optics , physics , metal , organic chemistry , composite material
Iron exists in Fe 2+ and Fe 3+ states in CaO–P 2 O 5 –Fe 2 O 3 glasses and they impart characteristic optical absorption bands that allow analysis of relative proportion of the two species. This communication reports the redox states of glasses melted under air, argon, and oxygen atmospheres and relates them to the dissolution rates. The dissolution rate was found to be related to the redox state and it is lowered if the glass is melted under oxidizing atmospheres.