Electrochemical Properties of Alloys of Aluminum with Gallium and Phosphorus. Final Report, 1981/1982

摘要

This project is directed toward mastering the method of obtaining GAPAL (gallium-phosphorus alloy of aluminum) sheets 2 to 8 mm thick in a reproducible manner possessing electrochemical properties acceptable for the use in ALAIR (aluminum-air) batteries. The specific program designed for the research period of 1 year was as follows: (1) a number of alloy samples were to be made from high-purity aluminum (99.999%) in the form of blocks 50 x 50 x 5 mm by splat-cooling from the melt, so as to cover a range of gallium and phosphorus contents; (2) the samples were to be submitted to the full range of electrochemical investigations; (3) the composition exhibiting most favorable characteristics (largest quality number) was to be submitted to the metallurgical characterization; (4) technical grade aluminum (99.5 and 99.8%) was to be collected from different sources and submitted to impurity analysis with the tendency to obtain the base metal in a spectrum of impurity contents; (5) the alloy of the most favorable composition was to be made in a number of samples using different base metals; and (6) electrochemical and metallographic investigations were to be carried out in order to learn about the effect of impurities on the characteristics of the alloy. Results are presented and discussed. (ERA citation 08:002364)