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Effect of Chloride on the Structure of Fluoroaluminate Glasses Studied by XPS
Author(s) -
Zhang Lipeng,
Wang Paul W.
Publication year - 1995
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.1151-2916.1995.tb08676.x
Subject(s) - chlorine , polyhedron , chemistry , x ray photoelectron spectroscopy , fluoride , chloride , fluorine , crystallography , inorganic chemistry , nuclear magnetic resonance , organic chemistry , physics , geometry , mathematics
The effect of chlorine on the structure of AlF 3 /YF 3 ‐based fluoride glasses was studied by XPS. The changes in the bonding state of cations with increase of chlorine content were all investigated by measuring the composition‐depend‐ dent changes in the relative concentration and binding energy of related cations. It was proposed that the chlorine replaces the bridging fluorine by which the [AlF n ] and [YF m ] polyhedra are connected and result in the formation of [AlF n‐u Cl u ] and [YF m‐v Cl v ] polyhedra. In the low BaCl 2 content region (<6 mol%), as many chlorine as possible attack [A1FJ and [YF m ] polyhedra, and with the increase of chlorine content, they replace more fluorines in [YF m ] polyhedra, while the number of chlorines in [AIF n‐u Cl u ] polyhedra remains a low constant value. In the high BaCl 2 content region (>6 mol %), the chlorines replace more fluorines in the already formed [AlF n‐u Cl u ] polyhedra and do not attack other [AlF] polyhedra, while the composition of [YF m‐v Cl v ] polyhedra does not change.