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This work aims to synthesize the alloy Co62Nb32B6 through a wet-route mechanical alloying using a planetary ball mill. A disc rotation per minute and a ball/powder weight ratio of 350 rpm and 20:1 were used, with a grinding time of 15 h, respectively. The characterization of the Co62Nb32B6 alloy was performed by X-ray diffraction (XRD), examined by scanning electron microscope-energy-dispersive X-ray spectroscopy (SEM–EDS), thermoanalytical techniques (TGA/DTA), vibrating sample magnetometer (VSM), and confirmed by the BET method type IV isotherms with a hysteresis loop for mesoporous materials. The results indicated the evolution of the amorphous phase in the Co62Nb32B6 composition through the mechanical alloying process and exhibited good soft magnetic properties with the addition of the B metalloid element and their excellent unique ferromagnetic properties. Through thermoanalytical analysis (TGA/DTA), it was shown that at higher temperatures, oxidation with a significant increase in mass gain of 19.69% at 865 °C, probably due to the contribution of B in the evolution stability thermal and magnetic in the amorphous phase, respectively. This suggests that the newly developed high-performance amorphous alloy Co62Nb32B6 has great application potential. [ABSTRACT FROM AUTHOR]

This work synthesized and investigated the amorphous alloy Fe73Si22B5 obtained by high-energy milling. The properties of the amorphous alloy Fe73Si22B5 were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) with EDS, Fourier transform infrared spectrometry (FTIR), thermal analysis TGA/DTA, textural analysis by N2 (BET/BJH), and magnetic measurements (VSM). The results confirmed that the Fe73Si22B5 alloy reached the desired amorphization degree and presented IV isotherms with a hysteresis loop for mesoporous materials. The TGA/DTA confirmed that Fe and Si ions are quickly oxidized in the environment with the mass slightly increased to 27.5%. The Fe73Si22B5 exhibited soft magnetic properties with ferromagnetic characteristics. The FTIR spectra exhibit absorption peaks corresponding to the presence of (R)O–H, Fe–O, Si–O, O–Fe–O, and Si–O–Fe groups. This result suggests that the developed high-performance Fe73Si22B5 amorphous alloy has great application potential in various research fields. [ABSTRACT FROM AUTHOR]