Abstract
(Fe 70Al 30) 100− x Si x ( x = 0 , 5, 10 and 20) alloys were obtained by mechanical milling for durations of 12, 24 and 36 h. They were studied by X-ray diffraction (XRD), Mössbauer spectrometry and magnetic measurements at room temperature. The XRD experiments show that all the samples have the Fe-BCC phase and for x = 20 an additional Fe 0.34Si 0.66 phase appears. The obtained Mössbauer spectra show a decreasing broad magnetic component and increasing broad paramagnetic component when the Si concentration increases. The spectra were fitted by using a hyperfine field distribution and a quadrupolar splitting distribution, respectively. The broad spectra show the disordered character of the samples. When the milling time increases the mean HF increases. These results suggest that Si acts as magnetic dilutor and that the milling time increases the magnetism. All the samples present magnetic hysteresis cycles in which the coercive field decreases with the Si increase, improving in this way the semi-soft character of the alloy.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
