Transport properties electrical resistivity

TRANSPORT PROPERTIES (ELECTRICAL RESISTIVITY, THERMOELECTRIC POWER AND THERMAL CONDUCTIVITY) OF RARE EARTH INTERMETALLIC COMPOUNDS... [Pg.117]

E. Gratz and M J. Zuckermann, Transport properties (electrical resistivity, thermoelectric power and thermal conductivity) of rare earth intermetallic compounds 117... [Pg.600]

Commercially available membranes are usually reinforced with woven, synthetic fabrics to improve the mechanical properties. Several hundred thousand square meters of IX membranes are now produced aimuaHy, and the mechanical and electrochemical properties are varied by the manufacturers to suit the proposed appHcations. The electrochemical properties of most importance for ED are (/) the electrical resistance per unit area of membrane (2) the ion transport number, related to current efficiency (2) the electrical water transport, related to process efficiency and (4) the back-diffusion, also related to process efficiency. [Pg.172]

Separators are characterized by structural and functional properties the former describes what they are and the latter how they perform. The structural properties include chemical (molecular) and microcrystalline nature, thickness, pore size, pore size distribution, porosity, and various chemical and physical properties such as chemical stability, and electrolyte uptake. The functional properties of interest are electrical resistivity, permeability, and transport number. It is useful to characterize separator materials in terms of their structural and functional properties and to establish a correlation of these properties with their performance in batteries. A variety of techniques are used to evaluate separators. Some of these techniques are discussed in this section. [Pg.190]

The Au films formed at the interface show interesting electrical transport properties that are dependent on the reaction temperature (see Figure 4).24 Four-probe electrical resistance measurements on the nanocrystalline films show a metal to insulator transition, metallic behavior being shown by the films formed at high temperatures (>45 °C). The films formed at lower temperatures (<45 °C) show insulating behavior. [Pg.518]