Transition Metals in Glass Formation

Antônio Carlos  da Silva; S.C. Santos; Sonia Regina Homem de Mello-Castanho

doi:10.4028/www.scientific.net/MSF.727-728.1496

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HomeMaterials Science ForumMaterials Science Forum Vols. 727-728Transition Metals in Glass Formation

Transition Metals in Glass Formation

Abstract:

The structure of silicate glasses gets its charge stability through SiO₂, R₂O₃, R²⁺ and R⁺ groups arrangement. In these glassy structures, transition metals are usually used as dopants in small amounts. However, in soda-lime glass systems, transition metals can take part in the glassy network in larger quantities as secundary former or modifier, insted R²⁺ groups, if the charge balance conditions are made favorable by R₂O₃ groups additions. This paper studies transition metals (Cr, Ni, Fe, Cu, Zn, Pb, Ru) soda-lime-borosilicate glass network incorporation. This process was applied for many kinds of toxic metals containing vitrification waste. The glasses were obtaind by melt at temperature of 1300°C, and characterized by FT-IR and XRD techinics. The chemical stability was evaluated by hydrolytic attack test. The glasses showed a high chemistry and environmental stability like the soda-lime glass. Keywords: glass structure, electroplating waste, e-waste, nanowaste.

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Materials Science Forum (Volumes 727-728)

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1496-1501

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https://doi.org/10.4028/www.scientific.net/MSF.727-728.1496

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August 2012

Authors:

Antônio Carlos da Silva, S.C. Santos, Sonia Regina Homem de Mello-Castanho

Keywords:

Electroplating Waste, E-Waste, Glass Structure, Nanowaste

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