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THERMAL INVESTIGATION OF SiO₂-Bi₂O₃ HEAVY METAL GLASSES

V. SIMON

Babes-Bolyai University, Faculty of Physics, Cluj-Napoca, Romania

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M. TODEA

Babes-Bolyai University, Faculty of Physics, Cluj-Napoca, Romania

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, and

S. SIMON

Babes-Bolyai University, Faculty of Physics, Cluj-Napoca, Romania

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https://doi.org/10.1142/S0217979205032073Cited by:2 (Source: Crossref)

Abstract

Structural changes induced by temperature rising in binary silico-bismuthate glasses are investigated by differential thermal analysis. Several exothermic peaks are recorded for all samples. Progressive substitution of Bi₂O₃ by SiO₂ contributes to the structural relaxation of vitreous network and leads to diminishing of the melting temperature, even as SiO₂ content reaches 40 mol%. Glass stability is enhanced by addition of silicon dioxide.

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