The previous review of this system by [1992Rag] presented a tentative isothermal section at 1200 deg C, depicting the liquid miscibility gap in the ternary region. Recently, [2004Sun] reported an isothermal section at 227 deg C (500 K), where no ternary compounds were found.Binary SystemsIn the Fe-Pb system, there is very little mutual solubility between Fe and Pb in the liquid or solid state. There are two intermediate phases in the Fe-Sb system. The e phase, with a NiAs-type hexagonal structure has a maximum homogeneity range of 40-47 at.percent Sb [1993Oka]. FeSb_2 is a line compound with orthorhombic symmetry. The Pb-Sb phase diagram [Massalski2] is a simple eutectic type, with the eutectic composition and temperature at 17.5 at.percent Sb and 251.7 deg C, respectively. The maximum solubilities of Sb in Pb and of Pb in Sb are 5.8 and 1.9 at.percent, respectively.
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