Structure and Size Distribution of Powders Produced from Melt-Spun Fe-Si-B Ribbons

Abstract

This work studies the production of melt spun Fe78Si9B13 ribbons with amorphous or nanocrystalline structure. The main objective is the preservation of the amorphous structure after obtaining powders by mechanical milling of the ribbons, as well as the study of the influence of the milling conditions on the size distribution and structure of the obtained powders. In order to obtain high quality amorphous ribbons, the wheel rotation speed, crucible-wheel distance, melt homogenization time, ejection pressure and the ejection temperature were optimized in the melt spinning process. Different mills were used for powder production, studying the size distribution, efficiency, and preservation of the amorphous character as a function of the milling time. Ribbons and powders were characterized by X-ray diffraction (XRD) and electron microscopy (SEM and TEM); laser diffraction was used for powder granulometry.

Application of Fe-Based Amorphous Alloy in Industrial Wastewater Treatment: A Review

“…Due to the existence of alloy resistance will produce Joule heat, so that the alloy temperature rises rapidly to melt. By controlling the pressure difference inside and outside the quartz tube, the melt is sprayed into a high-speed rotating copper roller or mold, thus the preparation of a non-equilibrium ribbon with a thickness of 10-70 μm is realized [18,19]. The technology of single-roll strip spinning has been fully mature and industrial production has been realized, especially the Fe-MGs produced by this method is the main raw material of amorphous core in transformer [20].…”

Mechanical Crystallization of Amorphous Ti₅₀Al₃₀Ni₂₀ Alloy Prepared by Mechanical Alloying

“…Minor alloying addition techniques play important role in exploring novel amorphous materials, increasing glass forming ability of amorphous alloys, enhancing mechanical/thermal stability of an amorphous phase, and improving the properties of amorphous alloys. An ideal method to obtain the amorphous phase in significant quantities is melt spinning [5] or mechanical alloying (MA) [6,7]. There are also some studies on the formation of amorphous phase in binary systems such as Al-Ti [8] and Ti-Ni [9,10].…”