Pt—TM（TM—Sc，Ti，V，Zr，Nb）二元合金形成焓的的亚规则模型

Subregular Model for Formation Enthalpy of Pt--TM（TM：Sc, Ti, V, Zr, Nb） Binary Alloys

形成焓是描述合金形成能力和稳定性的重要参数。用亚规则模型对Pt—TM（TM—Sc，Ti，V，Zr，Nb）二元合金的形成焓进行理论计算，其目的是了解这5种Pt合金的热力学性质，预测其中间相的存在。结果显示亚规则模型对所研究的二元合金的形成焓结果能准确的描述和解释已有实验结果。这为制备和开发广泛应用于催化化学工业的Pt合金材料提供了理论支撑。

Formation enthalpy is an important parameter for the description of the formation and stability of the intermediate phase. In order to know the thermodynamic property, the forming ability and stability of the intermediate phase of the Pt based binary alloy, the subregular model is used to calculate the formation enthalpy of＇ Pt-TM （TM= Sc, Ti, V, Zr, Nb） binary alloys. The experimental data available are compared with the calculating results and find that there is a good matching among the calculating results with the experimental results.