以Miedema半经验模型和比热容随温度有效形成热变化的经验公式为基础, 结合基本热力学关系式对Fe-Sn和Ni-Sn体系的有效形成热及有效形成热随温度的变化进行了计算.采 用电弧放电法制备了Ni-Sn和Fe-Sn纳米粒子. XRD结果表明,在Ni-Sn系中金属间化合物的 初生相为Ni3Sn4,而Fe-Sn系中出现的为FeSn2.计算结果与相应纳米颗粒体系的实验结果吻合较好.
Based on Miedema semi-empirical model and an empirical specific heat equation, the effective heat of formation and its temperature dependence were calculated for Fe-Sn and Ni-Sn systems. Fe-Sn and Ni-Sn nanoparticles were prepared by an arc discharge method and the formed phases were experimentally determined by X-ray diffraction (XRD). Theoretically predicted primary intermetallic compounds were FeSn2 in Fe-Sn system and Ni3Sn4 in Ni-Sn system, which was well consistent with the experimental results of nanoparticles.
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