I.T. Denisova, E.A. Pastukhov, S.A. Istomin, V.M. Denisov
KEYWORDS:
fusion, noble metals, wetting, oxides of bismuth, germanium, silicon, titanium, boron, zinc.
ABSTRACT:
The wetting of Ag, Pt, Pd, Au and Ir by the Bi2O3-GeO2 (SiO2, TiO2, B2O3, ZnO) fusions in dependence on temperature and fusion composition was investigated. The lowest interaction of such melts was demonstrated to occur with iridium.
| E.V. Nikitina, N.A. Kazakovtseva. Dissipative structures and masstransfer during anodic anion activation in alkali carbonate melt | 84-88 |
V.L. Cherginets, T.P. Rebrova, V.A. Naumenko, T.V. Ponomarenko
KEYWORDS:
melts, bromides, rate constant, activation energy.
ABSTRACT:
The purification process of the BaBr2-KBr (0.51:0.49) eutectic melt from the oxygen-containing admixtures (O2-) was studied in the temperature range of 943-1023 K using the carbohalogenation method. The process course was verified with the help of the potentiometry method employing the Pt(O2)ZrO2(Y2O3) membranous oxygen electrode.
S.M. Gadgiev, O.M.Shabanov, A.S. Gadgiev, A.M. Salikhova, S.S. Alieva, G.S. Efendieva
KEYWORDS:
electrical conductivity, impulse, highvoltage discharge, activation, breakdown, relaxation, proton solid electrolyte, melt.
ABSTRACT:
An impact of highvoltage impulses on conductivity of a binary system of the NaHSO4-CsHSO4 proton solid electrolyte (PSE) and its melts with the CsHSO4 content of 25, 50, and 75 mol.% was determined. The relaxation processes in PSE and its melt after the highvoltage impulsing discharges (HID) were studied. Relaxation time for the nonequilibrium charge carriers was calculated. Its values have 104 c order of magnitude. The melts resistance in time in the course of highvoltage discharge was evaluated using the current and voltage oscillograms.
A.B. Salyulev, A.M.Potapov, N.I. Moskalenko
KEYWORDS:
electrical conductivity, melts, zirconium tetrachloride, zinc dichloride.
ABSTRACT:
For the first time a specific electrical conductivity of the ZnCl2-ZrCl4 molten mixtures, characterized by a high pressure of saturated vapors, was measured in dependence on temperature and concentration.
S.Yu. Melchakov, L.F. Yamshchikov, A.G. Osipenko, P.A. Pozdeev, M.A. Rusakov.
KEYWORDS:
praseodymium, neodymium, gallium, stanum, eutectic melt, solubility, activity coefficients, segregation coefficients.
ABSTRACT:
For the first time a solubility of praseodymium and neodymium in the gallium-stannic melt of the eutectic composition was measured in the temperature range of 423-1074 K using method of high-temperature sample extraction. According to the activity and solubility data the activity coefficients, excess thermodynamic characteristics of α-praseodymium and α-neodymium in the Ga-Sn melt of the eutectic composition as well as segregation coefficients of the Pr/Nd couple on the gallium-stannic electrodes in chloride melts were calculated.
L.T.Denisova, D.O.Krinitsyn, V.M. Denisov, S.A.Istomin
KEYWORDS:
oxide melts, wetting, spreading, silver, gold, platinum.
ABSTRACT:
The wetting of noble metals (Ag, Au, Pt) by the molten Bi2O3-CaO was studied using the laying drop method. These melts were found to fast spread over the Ag and Pt in the air while the equilibrium wetting angles are formed on the Au.