Chalcogenide glass for low viscosity extrusion and injection molding

Chalcogenide glass for low viscosity extrusion and injection molding

The invention is directed to chalcogenide glasses suitable for use in plastics forming processes. The glasses have the general formula YZ, where Y is Ge, As, Sb or a mixture of two or more of the same; Z is S, Se, Te, or a mixture of two or more of the same; and Y and Z are present in amounts (in at...

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Hauptverfasser: Aitken, Bruce Gardiner, Currie, Stephen Charles, Monahan, Beth Costello, Wu, Lung-Ming, Coonan, Everett William
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Sprache:eng
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creator Aitken, Bruce Gardiner
Currie, Stephen Charles
Monahan, Beth Costello
Wu, Lung-Ming
Coonan, Everett William
description The invention is directed to chalcogenide glasses suitable for use in plastics forming processes. The glasses have the general formula YZ, where Y is Ge, As, Sb or a mixture of two or more of the same; Z is S, Se, Te, or a mixture of two or more of the same; and Y and Z are present in amounts (in atomic/element percent) in the range of Y=15-70% and Z=30-85%. The chalcogenide glasses of the invention have a 10,000 poise temperature of 400° C. and are resistant to crystallization when processed at high shear rates at their 10,000 poise temperature. The glasses can be used to make, among other items, molded telecommunication elements, lenses and infrared sensing devices.
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title Chalcogenide glass for low viscosity extrusion and injection molding
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