Fe含量对钼铜合金组织和性能的影响

Effect of Fe Content on the Microstructure and Properties of Mo-Cu Alloy

摘要:

采用熔渗法制取不同Fe含量的Mo-Cu合金。利用场发射扫描电子显微镜(SEM)和能谱(EDS)仪分析不同Fe含量的Mo-Cu合金的显微组织及Fe元素的分布，研究Fe含量对Mo-Cu合金的致密度、热导率、电导率、硬度以及显微组织的影响。结果表明，添加1%Fe (质量分数)使Mo-Cu合金的致密度和硬度提高，但是导电和导热性能降低。微观分析表明，添加活化元素Fe后合金显微组织更加致密，Cu呈网状分布，Mo骨架烧结颈变大，但Fe含量过多时，不利于合金性能的提高

Abstract:

Mo-Cu alloys with different Fe content were prepared by an infiltration method. The microstructure and distribution of Fe of the alloys were analyzed by field-emission scanning electron microscope (FESEM) and energy disperse spectroscopy (EDS). The influence of Fe content on the density, thermal conductivity, electrical conductivity, hardness and microstructure was investigated. The results show that 1% Fe addition (mass fraction) increases the density and the hardness of the Mo-Cu alloys, but decreases thermal conductivity and electrical conductivity; meanwhile the microstructure becomes more compact, and Cu distributes in the form of mesh, and Mo skeleton sintering necks become bigger. However, too much Fe is not conducive to the improvement of properties