Formation of fluoride glasses based on AlF sub 3 -YF sub 3 -PbF sub 2 system

Colorless glasses about 1 mm thick are prepared by quenching melts on a C plate. Upon replacing PbF sub 2 by RF sub 2 (R=Mg, Ca, Ba) or replacing YF sub 3 by YbF sub 3 , glass thermal stability against crystallization improves. Glasses with optimized composition are more stable than AlF sub 3 -YF su...

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Bibliographic Details
Published in:Journal of non-crystalline solids 1991-05, Vol.128 (3), p.322-325
Main Authors: Wang, Y, Sawanobori, N, Nagahama, S
Format: Article
Language:English
Online Access:Get full text
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Summary:Colorless glasses about 1 mm thick are prepared by quenching melts on a C plate. Upon replacing PbF sub 2 by RF sub 2 (R=Mg, Ca, Ba) or replacing YF sub 3 by YbF sub 3 , glass thermal stability against crystallization improves. Glasses with optimized composition are more stable than AlF sub 3 -YF sub 3 -CaF sub 2 -BaF sub 2 glasses, and rods or disks are prepared. The AlF sub 3 -YF sub 3 -PbF sub 2 -based fluoride glasses have a wide transmission window and higher chemical durability and mechanical strength than those in the ZrF sub 4 system, and are promising for fiber or laser window material applications in the mid-ir region.
ISSN:0022-3093