Crystallisation processes in rapid quenched AgCl–AgI–Ag2O–B2O3 glasses

Author: Nowińskia J. L.   Garbarczyka J. E.   Wasiucioneka M.   Gierlotkab S.  

Publisher: Society of Glass Technology

ISSN: 0031-9090

Source: Physics and Chemistry of Glasses - European Journal of Glass Science and Technology Part B, Vol.47, Iss.4, 2006-08, pp. : 344-347

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Abstract

The influence of silver chloride on formation of the crystalline precipitates in borate glasses obtained in the system AgCl–AgI–Ag2O–B2O3 by rapid quenching was investigated. X-ray diffraction and field emission scanning microscopy methods. The glasses selected for the detailed investigations were related to the glass of the 78AgI.16·5Ag2O.5·5B2O3 composition, which demonstrates some interesting properties. Rapid quenching of the 78[xAgI.(1−x)AgCl].16·5Ag2O.5·5B2O3, 0≤x≤1 glass melt produces glass in which crystalline inclusions are embedded. Two types of the inclusions were identified. When 0≤x<0·70, the AgClyI1−y particles of fcc cubic AgCl structure are formed in the glass host. For the 0·7≤x composition range, the α-AgI nanoparticles of bcc cubic structure, stable at room temperature, precipitate in the glass host. The dependence of a lattice parameter a of an inclusion crystal structure as a function of silver chloride contents x in the glass was found out.

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