从Hill微系统热力学理论出发,根据已建立的金属纳米晶体结合能的等效模型与相应熔化热力学模型,建立了简单、实用的金属纳米晶体熔化与过热的等效模型.模型不仅预测了随表面原子百分数的增大自由表面纳米晶体熔点与熔化熵的减少及包覆纳米晶体熔点与熔化熵的增加,还对纳米晶体产生过冷和过热的条件进行了分析.对金属纳米微粒、纳米线及纳米薄膜的熔点、熔化熵增大或减少的预测值与实验结果相一致.
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