Investigations of glasses in the system PbO-PbF2

Rao, B. Govinda ; Keshava Sundar, H. G. ; Rao, Kalya J. (1984) Investigations of glasses in the system PbO-PbF2 Faraday Transactions, 80 (12). pp. 3491-3501. ISSN 0956-5000

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Official URL: http://pubs.rsc.org/en/content/articlelanding/1984...

Related URL: http://dx.doi.org/10.1039/F19848003491

Abstract

Glass formation in the system PbO-PbF2 has been investigated. The structure of these glasses has been studied using X-ray diffraction. Densities, heat capacities, glass-transition and crystallization temperatures and Vicker's microhardnesses have been measured. D.c. conductivities of these glasses have also been measured as a function of temperature. A structural model has been developed which suggests the existence of [PbO2F4]-type units over the entire composition range. It is suggested that covalent linkages of the type-O-Pb-O- play a crucial role in determining the composition limits to glass formation. The structural model has been shown to be consistent with other physical properties of the glasses.

Item Type:Article
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