Silver – Gold – Germanium

Alan Prince⁺, Ping Liang, updated by Olga Fabrichnaya

Literature Data

As would be anticipated from the constituent binary systems, Ag-Au-Ge system contains a ternary univariant eutectic curve originating at the Ag-Ge binary eutectic at 650°C and ending at the Au-Ge binary eutectic at 361°C. The ternary three-phase reaction L ↔ (Ag,Au) + (Ge) involves the deposition of the (Ag,Au) solid solution and of (Ge) containing minute proportions of Ag and Au [1964Zwi] and [1985Has]. Two ternary alloys were studied by [1946Jaf] using thermal analysis and metallographic techniques. The alloys, which contained 3.65Ag-67.09Au-29.26Ge (at.%) and 7.13Ag-63.22Au-29.65Ge (at.%), were stated to lie close to the univariant eutectic valley. [1964Zwi] used 99.95% pure Ag and Au and 99.995% pure Ge to prepare an unstated number of ternary alloys. The DTA examination was carried out at cooling rates that w...