The 473Â K isothermal section of the Cu-Ti-Sn ternary system

The phase relationships of the Cu-Ti-Sn ternary system at 473 K have been investigated mainly by means of X-ray powder diffraction (XRD), scanning electron microscopy (SEM), optical microscopy (OM) and differential thermal analysis (DTA). The isothermal section consists of 17 single-phase regions, 33 two-phase regions and 17 three-phase regions. The existence of 12 binary compounds and 2 ternary compounds, namely Cu4Ti, Cu3Ti2, Cu4Ti3, CuTi, CuTi2, Cu3Sn, Cu6Sn5, Ti3Sn, Ti2Sn, Ti5Sn3, Ti6Sn5, Ti2Sn3, CuTi5Sn3 and CuTiSn, are confirmed in the Cu-Ti-Sn ternary system at 473 K. No new ternary compound is found. The maximum solid solubility of Cu in Ti6Sn5 was approximately 10 at.% Cu.