scholarly journals Viscosity of Mixed-Alkali Lead Silicate Glasses in the Softening Region

1974 ◽  
Vol 23 (245) ◽  
pp. 104-108 ◽  
Author(s):  
Yukihiro KADOGAWA ◽  
Tamotsu YAMATE
Keyword(s):  
Silicate Glasses ◽  
Lead Silicate ◽  
Mixed Alkali ◽  
Softening Region

Structure of lead silicate glasses and its correlation with photoelastic properties

2020 ◽  
Author(s):  
A. Khanna ◽  
A. Kaur ◽  
M. Fábián ◽  
Hirdesh ◽  
A. Kaur
Keyword(s):  
Silicate Glasses ◽  
Lead Silicate

29Si NMR study on the structure of lead-silicate glasses

1984 ◽  
Vol 64 (1-2) ◽  
pp. 287-290 ◽  
Author(s):  
Takamitsu Fujiu ◽  
Makoto Ogino
Keyword(s):  
Silicate Glasses ◽  
Lead Silicate ◽  
29Si Nmr ◽  
Nmr Study

Electron spin resonance studies of reduced and unreduced lead silicate glasses

1973 ◽  
Vol 13 (8) ◽  
pp. 1057-1060 ◽  
Author(s):  
Clayton Wilson Bates ◽  
Daniel Leniart ◽  
Emil Straka
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Silicate Glasses ◽  
Lead Silicate ◽  
Spin Resonance

scholarly journals The Influence of Environment in the Alteration of the Stained-Glass Windows in Portuguese Monuments

Heritage ◽  
2018 ◽  
Vol 1 (2) ◽  
pp. 365-376 ◽  
Author(s):  
Teresa Palomar ◽  
Pedro Redol ◽  
Isabel Cruz Almeida ◽  
Eduardo Pereira da Silva ◽  
Marcia Vilarigues
Keyword(s):  
Analytical Techniques ◽  
Soda Lime ◽  
Silicate Glasses ◽  
High Humidity ◽  
Atmospheric Conditions ◽  
Stained Glass ◽  
Mixed Alkali ◽  
Alkali Silicate ◽  
High Humidity Environment ◽  
Humidity Environment

This work presents the results of the exposure of soda-lime, potash-lime and mixed-alkali silicate glasses during ten and twenty months in different Portuguese monuments with historical stained-glass windows to characterize the influence of local environmental conditions. The glass samples were exposed in the Monastery of Batalha (Batalha), the Monastery of Jerónimos (Lisbon), and the Cathedral of Évora (Évora). A set of analytical techniques to assess the physicochemical effects were used, including optical microscopy and Fourier transform infrared spectroscopy. All the samples presented crystalline deposits on their surface; however, their quantity and nature depended on the atmospheric conditions during the days before the collection. Potash-lime silicate glass was the most altered glass in comparison with soda-lime and mixed-alkali silicate glasses. The samples from the Cathedral of Évora showed a high content of dust and salts on their surface but without severe chemical pathologies; however, those samples exposed in the Monastery of Jerónimos and the Monastery of Batalha presented alteration layers due to a high humidity environment.

scholarly journals Thermal and structural characterization of the vitreous samples in the SiO2 - PbO - Na2O system

2006 ◽  
pp. 89-95 ◽  
Author(s):  
Catalina Mocioiu ◽  
Georgeta Jitianu ◽  
Maria Zaharescu
Keyword(s):  
Thermal Stability ◽  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Infrared Spectroscopy ◽  
Silicate Glasses ◽  
Lead Silicate ◽  
High Chemical ◽  
Nuclear Techniques ◽  
Infrared Data

Lead-containing glasses have been used from the ancient time. Recently, due to the possible application in optics, electronics, nuclear techniques, wastes inactivation. the interest in these types of glasses has been renewed. For lead waste inactivation, glasses with high amount of PbO in the composition are required, those exhibiting at the same time a high chemical and thermal stability. Thermal behavior of lead-silicate glasses was examined by differential thermal analysis (DTA). Infrared spectroscopy was used to investigate the structure of the glasses. The spectra were interpreted in terms of the structures of silicate group by comparison with the spectra of other silicate crystals. The DTA and infrared data were correlated with the chemical stability tests.

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