Fe(Ni)-Sn体系金属间化合物纳米粒子中初生相的预测  

PREDICTION OF THE PRIMARY INTERMETALLIC COMPOUND NANOPARTICLES FORMED IN Fe(Ni)-Sn SYSTEM

作　　者：雷军鹏[1] 董星龙[1] 赵福国[1] 吕波[1] 黄昊[1] 雷明凯[1] 

机构地区：[1]大连理工大学三束材料改性国家重点实验室,大连理工大学材料科学与工程学院,大连116023

出　　处：《金属学报》2008年第8期922-926,共5页Acta Metallurgica Sinica

基　　金：国家自然科学基金项目50371012;教育部新世纪优秀人才支持计划项目NCET-05-0283资助~~

摘　　要：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Ni_3Sn_4,而Fe-Sn系中出现的为FeSn_2.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 determined by X-ray diffraction （XRD）. Theoretically predicted primary intermetallic compounds were FeSn2 in Fe Sn system and Ni3Sn4 in Ni-Sn system, which are well consistent with the experimental results.

关 键 词：Fe(Ni)-Sn纳米粒子 有效形成热 金属间化合物 热力学预测 

分 类 号：TG111.3[金属学及工艺—物理冶金]