Projection of the Liquidus Surface of the Co – Sn – Bi System

Resumo

The crystallization behavior of phases in alloys of the Co – Sn – Bi system is studied by the methods of differential thermal (DTA), x-ray phase (XRP) and x-ray diffraction (XRD) analyses and hardness measurement. The projection of the liquidus surface is plotted. The boundaries of layering, the development of the monovariant processes, and the coordinates of the nonvariant equilibrium compositions are determined. Compositions of (Co₃Sn₂)_{1 – x}Bi_x solid solutions suitable for the production of antifriction materials are suggested.