Buscar
Mostrando ítems 1-10 de 4414
Glass foam of macroporosity using glass waste and sodium hydroxide as the foaming agent
(2013-04-01)
Glass foams using float glass waste and sodium hydroxide were produced. The influence of the sodium hydroxide amount in the foam formulation was studied. Titanium dioxide was used as a strengthening agent. The variations ...
Study of the glass transition temperature of as-s glasses for the fabrication of chalcogenide optical fibers
(2013-09-01)
Values of glass transition temperature (Tg) and of linear expansion coefficient (α) for Asx S100-x glasses were measured in the range of concentrations 35 × 42. Because of the importance of the glass formation region 35 × 42 ...
Crystallization of Yttrium and Samarium Aluminosilicate Glasses
(Elsevier, 2013-01)
Aluminosilicate glasses containing samarium and yttrium (SmAS and YAS glasses) exhibit high glass transition temperatures, corrosion resistance, and glass stability on heating which make them useful for technological ...
Effect of alkaline modifiers on the structural, optical and crystallization properties of niobium germanate glasses and glass-ceramics
(Elsevier B.V., 2020-07-01)
Alkali niobium germanate glasses were prepared by melt-quenching in the ternary systems 75GeO(2)-15Nb(2)O(5)-10M(2)O with M = Li, Na, K, Rb and Cs. Thermal properties of these glasses and related glass-ceramics are strongly ...
Optical and structural properties of Mn2+ doped PbGeO3-SbPO4 glasses and glass-ceramics
(Elsevier B.V., 2016-01-01)
This paper shows the study of optical and structural properties of SbPO4-PbGeO3-MnCl2 glass and glass-ceramics. Glass was prepared by melting-quenching methodology while the glass ceramic was obtained by controlled thermal ...
Structural, thermal and optical properties of CaBO and CaLiBO glasses doped with Eu3+
(Elsevier B.V., 2014-09-01)
Thermal, structural and optical properties of undoped and Eu3+ doped CaBO and CaLiBO glasses were carried out by the Raman, FT-IR, UV-Vis absorption, fluorescence, thermoluminescence and DSC analyses. The addition of Li+ ...
Crystallization of fluorindate and fluorogallate glasses
(1997-10-01)
Crystallization of binary InF3-MF2 and GaF3-MF2 (where M = Ba, Sr and Ca) glasses was studied. Characteristic temperatures and kinetic parameters E (activation energy) and n (Avrami exponent) were obtained. Stability against ...
Crystallization kinetics of glass prepared with foundry slag
(2021-07-01)
Iron foundry slag and hydrated lime were used in glass preparation by the melt-quenching method. The glass obtained was heat-treated using the thermal analysis technique. A crystallization kinetics study was carried out ...
Er3+-doped niobium alkali germanate glasses and glass-ceramics: NIR and visible luminescence properties
(Elsevier B.V., 2019-10-01)
Niobium alkali germanate glasses doped with Er3+ up to 4.0 mol% were synthesized by the melt-quenching technique. Glass-ceramics were obtained by controlled heat treatment of the pristine glass. Thermal and optical properties ...