Conductance and viscosity of LiAlCl4‐SOCl2 solutions covering a wide range of concentration (10−4–2.0M) have been measured at 25°C and for concentrated solutions these measurements have been made at several temperatures. Parameters characteristic of ion‐ion and ion‐solvent interactions and the energy of activation for conductance and for viscous flow have been obtained. Cyclic voltammograms of LiAlCl4‐SOCl2 solutions at several concentrations have been obtained and the effect of the additives, such as S2Cl2 , SCl2 , SO2 , and SO2Cl2 on the reduction behavior of SOCl2 has been studied as some of these are reduction products of SOCl2 . The implications of these studies on the performance and safety of the lithium‐thionyl chloride battery are discussed.

SPUTTEREDHAFNIUM FILMS 403 6. Before insertion into the vacuum chamber, the hafnium cathode was etched in a 1% hydrofluoric solution and rinsed in boiling distilled water. ABSTRACTThe GaAs-H20-H2 etch reaction has been studied as a function of flow rate, temperature, and GaAs surface area. Experimental and calculated equilibrium constants for the reaction have been compared. The formation of Ga203(s) is considered. The variation of sample surface texture with gas composition is examined.

Conductance, viscosity, and density of AlCl3‐SOCl2‐normalbased electrolyte solutions with and without sulfur dioxide and sulfur and varying concentration of lithium chloride have been determined as a function of temperature. While the data on AlCl3‐SOCl2 system can be interpreted in terms of solute‐solvent interaction forming adducts, those in the presence of sulfur dioxide and lithium chloride have been interpreted in terms of ion‐ion and ion‐solvent interactions and equilibria involving ion pairs and triple ions with complex anions such as Al2Cl7− and Al3Cl10− . Data on energy of activation for conductance and for viscous flow along with Walden product are in agreement with this interpretation. The unusually high electrolytic conductance observed for these concentrated electrolyte solutions and the energy of activation data are interpreted in terms of the hopping mechanism for conductance. The implication of increased complexity of solution structure on mass transport during normalLi/SOCl2 battery discharge is discussed.

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