论文标题
多晶固体有效导热率的新模型
A new model for the effective thermal conductivity of polycrystalline solids
论文作者
论文摘要
提出了一种用于预测多晶材料有效导热率的新模型。与现有模型相反，我们的新模型基于晶界（GB）的薄截面描述，并将GB视为具有自身导电性的自主阶段。这种处理允许该模型解释隔离/掺杂，界面结构/相变的影响以及界面剥离对有效导热率的影响。进行有限元模拟以验证新模型。与现有模型相比，模拟证明其准确性更高。
A new model for predicting the effective thermal conductivity of polycrystalline materials is presented. In contrast to existing models, our new model is based on the thin-interface description of grain boundaries (GBs) and treats GBs as an autonomous phase with its own thermal conductivity. This treatment allows the model to account for the effects of segregation/doping, interface structural/phase transition, and interface decohesion on the effective thermal conductivity. finite-element simulations were performed to validate the new model. The simulations proved its higher accuracy compared to existing models.
