Preparation and characterization of fluorozirconate glasses. / Preparação e caracterização de vidros fluorozirconados.

AUTOR(ES)

Angela Antonia Sanches Tardivo Delben

DATA DE PUBLICAÇÃO

1992

RESUMO

Replacing BaF2 for NaF yields physical properties modifications on fluorozirconate glasses. An increase of refraction index, thermal stability and young modulus was observed with NaF concentration. Humidity affects less Vickers microhardness than polishing conditions. A simple step model proposed for microhardness does not fit microhardness vs. load behaviors. Fluorozirconate glasses doped with Eu and Pr showed high stability allowing their use in optical fibers. Some glass compositions with LiF showed a decrease of refraction index and an increase of ionic conductivity with LiF content. Stability and transmission properties of these glasses are similar to those of traditional fluorozirconate glasses. We drew nice fibers from fluorindate glasses and the techniques and problems of perform preparation will be reported.

ASSUNTO(S)

vidros de fluoretos de metais pesados luminescence luminescência heavy metal fluoride glasses fibra óptica optical fiber

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