The isothermal section of the Cr-Pb-Sb ternary system at 500Â K

The phase relation of the Cr-Pb-Sb ternary system at 500 K has been investigated mainly by means of X-ray powder diffraction with the aid of optical microscopy. This section consists of five single-phase regions, seven two-phase regions and three three-phase regions. No ternary compound was found. The maximum solid solubility of Sb in Pb at 500 K was about 3.3%.