Nitrided glass as a reaction medium: reduction of Ag and Cu within a phosphorus oxynitride glass matrix

Nitrogen incorporation as N 3− into a phosphate glass network gives the oxynitride glass medium a reducing character. From a thermodynamic approach to the reduction phenomenon we predict with good approximation the reduction or not of various metal oxides. This property makes possible the in situ pr...

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Bibliographic Details
Published in:Journal of non-crystalline solids 1997-08, Vol.217 (1), p.83-91
Main Authors: Le Sauze, André, Gueguen, Erwan, Marchand, Roger
Format: Article
Language:English
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Summary:Nitrogen incorporation as N 3− into a phosphate glass network gives the oxynitride glass medium a reducing character. From a thermodynamic approach to the reduction phenomenon we predict with good approximation the reduction or not of various metal oxides. This property makes possible the in situ precipitation of metallic particles of Ag and Cu from the corresponding oxides, in particular in the low-melting oxynitride glass composition Li 0.35Na 0.35PO 2.4N 0.3 ( T m ∼ 450° C). The reduction phenomenon is defined by the temperature of reduction T r which is not directly related to the glass transition temperature T g.
ISSN:0022-3093
1873-4812
DOI:10.1016/S0022-3093(97)00152-X