The Electrical Conductivity and Density of Solid and Molten Li2SO4 — Ag2SO4

1967 ◽  
Vol 22 (2) ◽  
pp. 208-212 ◽  
Author(s):  
Arnold Kvist
Keyword(s):  
Electrical Conductivity ◽  
Equivalent Conductivity ◽  
Density Measurements

The electrical conductivity of solid and molten Li2SO4—Ag2SO4 has been measured for different concentration values. Density measurements of molten Li2SO4, Ag2SO4 and equimolar (Li, Ag) 2SO4 show that the system can be considered ideal. The equivalent conductivity of molten (Li, Ag)2SO4 can be calculated from the conductivities of the pure salts by assuming that the cations are moving in groups, each group containing about four cations.

Production and Study of Ca/Sn(II) Metastable Fluoride Ion Conductors

1997 ◽  
Vol 481 ◽  
Author(s):  
Michael F. Bell ◽  
Georges Dénès ◽  
Zhimeng Zhu
Keyword(s):  
Solid Solution ◽  
Electrical Conductivity ◽  
High Temperature ◽  
Calcium Nitrate ◽  
Fluoride Ion ◽  
Conductivity Measurements ◽  
Ambient Conditions ◽  
Reaction Conditions ◽  
Density Measurements ◽  
Ion Conductors

ABSTRACTPrecipitation reactions from aqueous solutions of calcium nitrate and tin(II) fluoride result in the formation of two metastable phases, depending on the reaction conditions. Crystalline CaSn2F6 and the microcrystalline Ca1-xSnxF2 solid solution are obtained, the latter crystallizing in the cubic fluorite (CaF2) type with total Ca/Sn disorder. Both phases are fluoride ion conductors. Electrical conductivity measurements versus temperature and bulk density measurements show that both phases are far from thermodynamic equilibrium at ambient conditions, and thus are metastable. Both decompose to a mixture of SnF2 and CaF2 at high temperature. In addition, CaSn2F6 is chemically unstable in an aqueous medium, in which it looses SnF2 to give the microcrystalline Ca1-xSnxF2 solid solution.

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.

Structure Sensitive Properties of System B2O3- CaO Melts

2020 ◽  
Vol 400 ◽  
pp. 186-192
Author(s):  
A.S. Vusikhis ◽  
Evgeny N. Selivanov ◽  
A.N. Dmitriev ◽  
V.P. Chentsov ◽  
V.V. Ryabov
Keyword(s):  
Electrical Conductivity ◽  
Surface Tension ◽  
Boron Oxide ◽  
Liquidus Temperature ◽  
Contact Method ◽  
Structure And Properties ◽  
Density Measurements ◽  
Structure Sensitive ◽  
Metallurgical Processes ◽  
Borate Melts

Boron oxide-based systems on structure and properties are similar to silicate systems, but they are more fusible and so are widely used in modelling various metallurgical processes. This paper presents the results of viscosity, electrical conductivity, surface tension and density measurements of the B2O3–CaO system with a content of 25–45% CaO in the temperature range above the liquidus temperature. To measure viscosity, vibration viscometry was used. Electrical conductivity was measured via the contact method using an alternating current bridge. Surface tension and density were measured using the lying drop method. The obtained results were used to describe the structure of borate melts.

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.

The chlorosulfuric acid solvent system. Part I. Electrical conductivity, transport number, and density measurements on solutions of simple bases

1968 ◽  
Vol 46 (10) ◽  
pp. 1719-1725 ◽  
Author(s):  
E. A. Robinson ◽  
J. A. Ciruna
Keyword(s):  
Electrical Conductivity ◽  
Alkali Metal ◽  
Alkaline Earth ◽  
Transport Number ◽  
High Mobility ◽  
Earth Metal ◽  
Solvent System ◽  
Alkaline Earth Metal ◽  
Density Measurements ◽  
System Part

Electrical conductivity, transport number, and density measurements on solutions of some simple bases, including alkali metal and alkaline earth metal chlorosulfates, are reported in the chlorosulfuric acid solvent system. The SO3Cl− ion was found to have a high mobility compared with, for example, the mobilities of the alkali metal and alkaline earth metal cations, and is believed to conduct by an abnormal Grotthus-type chain mechanism. Alkali metal chlorosulfates appear to behave as fully dissociated electrolytes, whereas alkaline earth metal chlorosulfates are incompletely dissociated. Difficulties encountered in preparing pure chlorosulfuric acid are discussed.

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.

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