Results 201 to 210 of about 9,159 (244)

Conductivity and dielectric properties of Na2O-K2O-Nb2O5-P2O5 glasses with varying amounts of Nb2O5

Journal of Non-Crystalline Solids, 2016
Abstract Niobium phosphate glasses with a composition of 15K2O-15Na2O-xNb2O5-(70-x) P2O5 (x = 20, 25, 30, 35, 40) have been prepared using the conventional melt-quenching technique. The influence of Nb2O5 on the structure of the prepared glasses was investigated by infrared spectroscopy.
Yousra Attafi, Shiquan Liu
openaire   +1 more source

I. The binary system Nb2O5 -SiO2 ; II. The binary system CaO-Nb2O5

1962
The binary system Nb205--S102 has been shown to include an extensive two-liquid region over the range 5 to 80% Nb205. The minimum temperature of the two-liquid area is 1695°C. A eutectic composition occurs at 95% Nb205 and 1448°C. and another at approximately 5% Nb2O5 and 1695°C. The experimental results were obtained by the cone-fusion method.
M Ibrahim, N F H Bright, J F Rowland
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Das System KNbO3-Nb2O5

Journal of Thermal Analysis, 1989
Das System KNbO3−Nb2O5 wurde mit thermoanalytischen, dilatometrischen und rontgenographischen Methoden neu untersucht. Acht ternare Verbindungen werden im Bereich von 0–50 Mol-% K2O gefunden. Nur K4Nb6O17 schmilzt kongruent, alle anderen zersetzen sich peritektisch.
R. Blachnik, E. Irle
openaire   +1 more source

TiO2-Nb2O5 solid solutions

Journal of Materials Science Letters, 1987
Preparation et etude des parametres cristallins des solutions solides de TiO 2 et Nb 2 O 5 utilisables dans les glacures ...
J. S. Sanghera, J. Williamson
openaire   +1 more source

ChemInform Abstract: Formation and Transformation of δ‐Nb2O5 Solid Solutions in the System Nb2O5‐Al2O3.

ChemInform, 1989
AbstractSolid solutions of δ‐Nb2O5 and up to 50 mol% Al2O3 are obtained by annealing amorphous materials prepared by simultaneous hydrolysis of the alkoxides Nb(OPr)5 and Al(OPr)3.
O. YAMAGUCHI, D. TOMIHISA, K. SHIMIZU
openaire   +1 more source

Synthesis and Characterization of Nb2O5 Nanostructures

2021
In the last few years, there has been a significant increase in the interest in niobium oxides, among which Nb2O5 stands out. This interest is due to its enormous potential in several applications such as microalloys, thin films, medical implants, superalloys, superconductors, electrolytics, supercapacitors, electronics, batteries, electrodes, solar ...
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The binary system ZnONb2O5

Journal of the Less Common Metals, 1972
Abstract Phase relationships in the binary system ZnONb2 O5 have been re-determined. The compounds 3ZnO.Nb2O5, α-ZnO.Nb2O5, β-ZnO.Nb2O5 and 2ZnO.17Nb2O5 have been encountered. The compounds 3ZnO.Nb2O5 and β-ZnO.Nb2O5 melt congruently at 1312 °C and 1405 °C, respectively, but 2ZnO.17Nb2O5 melts incon-gruently to liquid +H-Nb2O5 at 1415 °C and exists ...
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???????????? ???????????????????????????????? 14WO3???Nb2O5 ???? ?????????????????? ???????????????? ??????????????????

2009
?????????????????????? ?????????????? ?????????????????? ?? ???????????????????????? ?????????? 14WO3???Nb2O5, ?????????????????? ???? Al2O3, ZrO2, CeO2, Nb2O5. ???????????? ???????????????????????????????? ???????????????? ?????????????????????????????? ??????????????, ?????????????????????? ???? ??1 ?????? ??????????????????????????. ????????????????,
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Composition of the phases in the systems NbO2?Nb2O5 and TiO2?Nb2O5

Die Naturwissenschaften, 1964
R. S. Roth, A. D. Wadsley, B. M. Gatehouse   +2 more
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Eine mit ?-Ta2O5 verwandte Nb2O5-Modifikation: ?-Nb2O5

Die Naturwissenschaften, 1965
F. Laves, R. Moser, W. Petter
openaire   +1 more source