Díaz Barriga Arceo Lucía G, González Reyes Leonardo, Rivera Olvera Jesús Noé, Medina Ovando Abraham, Garibay Febles Vicente
Depto. Ingeniería en Metalurgia y Materiales UPALM ESIQIE IPN, Apartado Postal 118-018, Del. GAM, Ciudad de México. C.P. 07051, Mexico.
Universidad Autónoma Metropolitana-Azcapotzalco, Departamento de Ciencias Básicas, Av. Sn. Pablo No. 180, Ciudad de México 02200, Mexico.
Materials (Basel). 2019 Nov 20;12(23):3806. doi: 10.3390/ma12233806.
This paper reports the production of intermetallic microrods and microtubes from the decomposition of an intermetallic compound in an AlTiFe system. The intermetallic compound was obtained by mechanosynthesis of elemental powders of Al, Ti and Fe over 300 h at 400 rpm, sintering from compacted powder particles at 300 MPa per minute and at 900 °C for 3600 s in an argon atmosphere. The milled and sintered samples were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM). The intermetallic AlTi and FeAl phases were obtained during the milling process. After sintering, a decomposition of these intermetallic phases was found-AlTiFe, AlTi, FeTi, AlTi, TiAl, FeTi, AlFe and AlFe. As a result of the decomposition, we observed the formation of hexagonal rods with intercalated phases of AlTi and FeTi.
本文报道了通过AlTiFe体系中金属间化合物的分解制备金属间微棒和微管。该金属间化合物是通过将Al、Ti和Fe的元素粉末在400 rpm下机械合成300 h，将压实的粉末颗粒在氩气气氛中以每分钟300 MPa的压力和900 °C烧结3600 s而获得的。通过X射线衍射（XRD）、扫描电子显微镜（SEM）和高分辨率透射电子显微镜（HRTEM）对研磨和烧结后的样品进行了分析。在研磨过程中获得了金属间AlTi和FeAl相。烧结后，发现这些金属间相发生了分解——AlTiFe、AlTi、FeTi、AlTi、TiAl、FeTi、AlFe和AlFe。分解的结果是，我们观察到形成了具有AlTi和FeTi插层相的六边形棒。
