VII. Dilute solutions of aluminium in gold

Abstract

The following is an account of an attempt we have been making to determine the complete equilibrium diagram of aluminium and gold. We have been occupied with the problem during the last two years, and, as the experiments consume a great deal of labour and time, we are not likely to complete the work for at least another year; we therefore venture to ask the Royal Society to accept a résumé of the portion which is practically complete. The results, in part embodied in the accompanying diagram, are based on two kinds of experiment—the tracing of cooling curves and the microscopic examination of ingots that have been annealed at certain temperatures, specially treated, and finally chilled by sudden immersion in water, the chill preserving to a great extent the structure existing a moment before the chill.