Molar volume of some sodium silicate and sodium borosilicate glasses
نویسندگان
چکیده
منابع مشابه
Morphology and Magnetic Properties of Ferriferous Two-Phase Sodium Borosilicate Glasses
This contribution is devoted to the study of morphology and magnetic properties of sodium borosilicate glasses with different concentrations (15, 20, and 25 wt.%) of α-Fe2O3 in an initial furnace charge. These glasses were prepared by a melt-quenching method. For all glasses a coexistence of drop-like and two-phase interpenetrative structures is observed. The most part of a drop structure is fo...
متن کاملStructure of Rhenium-Containing Sodium Borosilicate Glass
A series of sodium borosilicate glasses were synthesized with KReO4 or Re2O7, to 10,000 ppm (1 mass%) target Re, to assess effects of large concentrations of rhenium on glass structure and fto estimate solubility of Tc, a radioactive component in low active waste nuclear glasses. Rhenium was used as a surrogate for Tc for laboratory testing, due to similarities in chemistry, ionic size, and red...
متن کاملCorrelation between dielectric constant and chemical structure of sodium silicate glasses
The chemical structure of sodium aluminosilicate glasses is determined by high resolution x-ray photoelectron spectroscopy ~XPS! as silicon is gradually replaced by aluminum. A well-defined chemical state is found for silicon, aluminum, and sodium atoms, while three different environments are identified for oxygen atoms corresponding to Si–O–Si, Si–O–Al, and Si–O–Na bonds. The binding energy of...
متن کاملVerification of the " Tg-A Rule" in Potassium Silicate and Sodium Tungstate Glasses *
A linear relationship exists in oxide glasses between glass transition temperature (Tg) and quadrupole splitting ( A ) of Fe , + . DTA and Mössbauer measurements of silicate and tungstate glasses yielded large slopes of 680 and 260 °C/(mm s~ 1 ) f rom the slope of the straight lines when Fe + occupied, as network former (NWF), distorted tetrahedral Si and distorted octahedral W 6 + sites, respe...
متن کاملChannel formation and intermediate range order in sodium silicate melts and glasses.
We use inelastic neutron scattering and molecular dynamics simulation to investigate the interplay between the structure and the fast sodium ion diffusion in various sodium silicates. With increasing temperature and decreasing density the structure factors exhibit an emerging prepeak around 0.9 A(-1). We show that this prepeak has its origin in the formation of sodium rich channels in the stati...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Communications, Faculty Of Science, University of Ankara Series B Chemistry and Chemical Engineering
سال: 1991
ISSN: 1303-6017
DOI: 10.1501/commub_0000000441