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Inward and Outward Diffusion of Modifying Ions and its Impact on the Properties of Glasses and Glass–Ceramics
Author(s) -
Smedskjaer Morten M.,
Yue Yuanzheng
Publication year - 2011
Publication title -
international journal of applied glass science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 34
eISSN - 2041-1294
pISSN - 2041-1286
DOI - 10.1111/j.2041-1294.2011.00050.x
Subject(s) - fragility , materials science , diffusion , ceramic , ion , percolation (cognitive psychology) , chemical physics , glass transition , glass ceramic , activation energy , diffusion process , amorphous solid , mineralogy , thermodynamics , composite material , polymer , chemistry , crystallography , physics , knowledge management , innovation diffusion , organic chemistry , neuroscience , biology , computer science
In this paper, we review our recent findings about both the cationic inward and outward diffusion processes in glasses and glass–ceramics caused by redox reactions. We provide new insights into these findings by mapping the diffusion depth, the thermal reduction temperature, and time in a three dimensional diagram and by looking into the correlation among the glass composition, structure, topology, and the diffusion process in the polyvalent elements containing glasses. We illustrate the link between glassy dynamics (via the liquid fragility index m ) and activation energy of diffusion. Furthermore, the inward diffusion approach is used to study percolation phenomena in glass–ceramics. Finally, we show that the diffusion approaches are potential tools for tailoring the surface performances of bulk glasses and glass fibers.