Pb–Se–Te ternary system is of significant importance for thermoelectric applications. However, no systematic study of its phase diagram has been carried until now. Samples of Pb–Se–Te ternary alloys were prepared, their phase equilibrium phases were determined, and the Pb–Se–Te isothermal sections at 350 °C and 500 °C were proposed based on the experimental results. No ternary compounds were found. There is one three phase field, Pb(Se,Te)+liquid(Se,Te)+(Se,Te) at 350 °C and no three phase field at 500 °C. PbSe and PbTe form a continuous solid solution at both temperatures.

中文翻译：

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Pb-Se-Te 系统 I 的相图：实验研究

Pb-Se-Te 三元体系对于热电应用具有重要意义。然而，到目前为止，还没有对其相图进行系统研究。制备了 Pb-Se-Te 三元合金样品，确定了它们的相平衡相，并根据实验结果提出了 350 °C 和 500 °C 下的 Pb-Se-Te 等温截面。未发现三元化合物。在 350 °C 时有一个三相场，Pb(Se,Te)+liquid(Se,Te)+(Se,Te)，在 500 °C 时没有三相场。PbSe 和 PbTe 在两个温度下都形成连续的固溶体。