The Electrical Conductivity of (Tl-Rb)NO3 and (Na-Rb)NO3

1968 ◽  
Vol 23 (6) ◽  
pp. 926-932
Author(s):  
Vittoriano Wagner ◽  
Sandro Forcheri
Keyword(s):  
Electrical Conductivity ◽  
Excess Conductivity ◽  
Negative Deviation ◽  
Equivalent Conductivity ◽  
Conductivity Isotherm

The electrical conductivity of molten (Na—Rb)NO3 and (Tl—Rb)NO3 was determined.While the equivalent conductivity of the first system shows the usual negative deviation from additivity, that of the second one varies nearly linearly with composition.After discussing the conductivity isotherms in terms of some proposed models, an excess conductivity isotherm is presented, derived on the basis of simple assumptions about the trend of both cationic mobilities.

The Effect of Pressure on the Electrical Conductivity of the Molten Halides of Mercury and the Molten Iodides of Cadmium, Gallium and Indium

1983 ◽  
Vol 38 (2) ◽  
pp. 120-127 ◽  
Author(s):  
Brian Cleaver ◽  
Pietro Zani
Keyword(s):  
Electrical Conductivity ◽  
Pressure Vessel ◽  
Effect Of Pressure ◽  
Electrical Conductivities ◽  
Ionic Mobilities ◽  
Conductivity Isotherm

Abstract The electrical conductivities of molten HgCl2, HgBr2, Hgl2, Cdl2, Gal3 and InI3 were measured to pressures of 1 GPa (10 kbar), using a heated pressure vessel pressurised with argon. Additionally, the conductivities of CdI2 and HgCl2 were measured from 2 to 6 GPa, using a tetrahedral anvil apparatus. In every case the conductivity rose with pressure initially, and this is thought to be due to an increase in the degree of self-ionisation of the liquid. For CdI2 and Hgl2 a maximum was observed in the conductivity isotherm below 1 GPa, and for HgCl2 the conductivity fell with pressure from 2 to 6 GPa, implying that a maximum exists between 1 and 2 GPa. At the maximum the degree of ionisation approaches unity, and there is a balance between the competing effects of pressure in increasing the degree of ionisation and in reducing the ionic mobilities.

The Effect of the Anion Polarization on the Cationic Mobilities in Nitrate Binary Mixtures

1969 ◽  
Vol 24 (6) ◽  
pp. 887-891
Author(s):  
Vittoriano Wagner ◽  
Emilio Berra ◽  
Sandro Forcheri
Keyword(s):  
Binary Mixtures ◽  
Frame Of Reference ◽  
Simultaneous Presence ◽  
Equivalent Conductivity ◽  
Dilute Solutions ◽  
Conductivity Isotherm ◽  
Main Factor

The electrical perturbation induced by the simultaneous presence of two different cations near the anion (which is the frame of reference) is indicated as main factor influencing the internal mobilities in dilute solutions of monovalent nitrates in NaNO3 .By extending the mobility isotherm derived on the basis of the previous assumptions to a larger concentration range, an equivalent conductivity isotherm is proposed.

scholarly journals The Electrical Conductivity of Molten (Ag, Cd1/2)Br

2001 ◽  
Vol 56 (11) ◽  
pp. 751-753
Author(s):  
Alina Wojakowska ◽  
Agata Gòrniak
Keyword(s):  
Activation Energy ◽  
Electrical Conductivity ◽  
Conductivity Isotherm

Abstract The electrical conductivity of molten (Ag, Cd1/2)Br has been determined as a function of temperature in the whole range of compositions. The resulting activation energy values and the conductivity isotherm at 850 K are compared with those of the system (Ag, Cd1/2)Cl.

Excess conductivity and the pseudogap state in Hf-doped YBa2Cu3O7−δ ceramics

2016 ◽  
Vol 30 (04) ◽  
pp. 1650034 ◽  
Author(s):  
S. V. Savich ◽  
A. V. Samoilov ◽  
R. V. Vovk ◽  
O. V. Dobrovolskiy ◽  
S. N. Kamchatna ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Temperature Dependence ◽  
Charge Carriers ◽  
Excess Conductivity ◽  
Broad Temperature Range ◽  
Pseudogap State ◽  
Temperature Range ◽  
Scattering Centers ◽  
Exponential Temperature Dependence

The electrical conductivity of hafnium (Hf)-doped YBa2Cu3O[Formula: see text] ceramics is investigated. Hf doping has been revealed to lead to an increase of the number of effective scattering centers for the normal charge carriers. In a broad temperature range, the excess conductivity of the investigated samples obeys an exponential temperature dependence, while near [Formula: see text] it is satisfactorily described by the Aslamazov–Larkin model. Meanwhile, Hf doping has been shown to lead to a notable broadening of the temperature range for the manifestation of the pseudogap anomaly in the [Formula: see text]-plane.

scholarly journals The electrical conductivity of dilute solutions of sulphuric acid

1905 ◽  
Vol 76 (513) ◽  
pp. 577-583 ◽  
Keyword(s):  
Electrical Conductivity ◽  
Sulphuric Acid ◽  
Unit Volume ◽  
Equivalent Conductivity ◽  
Dilute Solutions ◽  
Limiting Value

If the measure of the electrical conductivity of a solution be divided by that of the concentration expressed in gramme-equivalents per unit volume, we obtain a quantity which may be called the equivalent conductivity of the solution. If the conductivity of the solvent used be subtracted from that of the solution, the corresponding quantity may be taken as giving the equivalent conductivity of the solute. As is well known, the equivalent conductivity of neutral salts when dissolved in water approaches a limiting value as the dilution is increased, and, in terms of the ionisation theory, this limiting value corresponds with complete ionisation.

ZHC COPPER

Alloy Digest ◽  
1987 ◽  
Vol 36 (1) ◽  
Keyword(s):  
Electrical Conductivity ◽  
Corrosion Resistance ◽  
High Strength ◽  
Heat Treating ◽  
Power Electronic ◽  
High Electrical Conductivity ◽  
Electronic Circuits ◽  
Equivalent Conductivity ◽  
Relaxation Resistance ◽  
Power Electronic Circuits

Abstract ZHC COPPER is a high-electrical-conductivity alloy developed to satisfy the requirements of high-power electronic circuits. It has high strength compared to other metals of equivalent conductivity, good bend formability, excellent stress-relaxation resistance and is readily soldered. It also is known as Olin Alloy C151. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: Cu-520. Producer or source: Olin Brass.

A Numerical Method for Modeling Equivalent Conductivity of Closed-Cell Aluminum Foams Material Based on CST Software

2013 ◽  
Vol 433-435 ◽  
pp. 1894-1897
Author(s):  
Long Dou ◽  
Bin Chen ◽  
Hai Lin Chen
Keyword(s):  
Electrical Conductivity ◽  
Numerical Method ◽  
Excellent Agreement ◽  
Equivalent Conductivity ◽  
Aluminum Foams ◽  
Closed Cell ◽  
Proposed Model ◽  
Electrical Conductivities ◽  
Mathematical Formulas ◽  
The Relationship

A numerical method for modeling equivalent electrical conductivity of closed-cell aluminum foams material based on CST software has been presented. The equivalent electrical conductivity is calculated through summing up the total loss produced in the multicomponent aluminum foams model which has been analyzed by the CST software. The influences of porosity on the electrical conductivities are investigated numerically and the mathematical formulas of the relationship between porosity and conductivity are also shown. The validity of the proposed model was verified through applications of the model in many practical problems, where excellent agreement between measured and calculated results was obtained.

scholarly journals The electrolytic properties of diluted solutions of sulphuric acid

1908 ◽  
Vol 81 (544) ◽  
pp. 58-80 ◽  
Keyword(s):  
Electrical Conductivity ◽  
Sulphuric Acid ◽  
Royal Society ◽  
Unit Volume ◽  
Equivalent Conductivity ◽  
Electrolytic Properties

The first section of the present paper contains an account of a continuation of the work described in the 'Proceedings of the Royal Society,’ A, vol. 76, p. 577, 1905, and a statement of the object of the investigation may be reproduced from that place : “ If the measure of the electrical conductivity of a solution be divided by that of the concentration expressed in gramme-equivalents per unit volume, we obtain a quantity which may be called the equivalent conductivity of the solution. If the conductivity of the solvent used be subtracted from that of the solution, the corresponding quantity may be taken as giving the equivalent conductivity of the solute.

scholarly journals Investigation of temperature effect on the electrical conductivity of alcohol solutionssodium and potassium alcoholates

2020 ◽  
Vol 61 (1) ◽  
pp. 81-85
Author(s):  
Vera A. Petrukhina ◽  
◽  
Pavel I. Fedorov ◽  
Ksenia A. Konnova ◽  
Maria V. Yakimova ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Aqueous Solutions ◽  
Temperature Dependence ◽  
Isopropyl Alcohol ◽  
Effect Of Temperature ◽  
Inorganic Salts ◽  
Equivalent Conductivity ◽  
Solutions Of Electrolytes ◽  
Weak Electrolytes ◽  
Sodium And Potassium

Earlier, we studied the electrical conductivity of inorganic salts in a number of alcohols (ethanol, propanol-2, and butanol-1) at room temperature and found that alcoholic solutions of inorganic salts are weak electrolytes. It is known that an increase in the temperature of salt solutions leads to an increase in electrical conductivity due to an increase in the mobility of their ions in the solvent medium. To study the temperature dependence of the electrical conductivity of aqueous solutions of electrolytes, we proposed an approach based on the study of the effect of temperature on the equivalent electrical conductivity of solutions at infinite dilution λ∞. Using this approach, we studied the electrical conductivity of aqueous solutions of a number inorganic salts (nitrates, acetates, and phosphates), carboxylic acids, and amino acids as a function of temperature. It was found that for these solutions the dependence λ∞(Т) is described by the exponential Arrhenius equation λ∞ = Аexp(-E/(RT)). This equation was used to describe the temperature dependence of the ultimate equivalent conductivity for solutions of a number of inorganic salts (calcium and nitrate calcium, cadmium, lithium and potassium iodides, chloride, iodide and ammonium nitrate, silver nitrate and sodium bromide) in ethanol. This article investigated and demonstrated the possibility of describing the experimental data λ∞(Т) for solutions of ethylates, propylates and isopropylates of sodium and potassium in the corresponding alcohols (ethylates in ethanol, propylates in propanol, isopropylates in isopropyl alcohol) using the same equation.

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