Science of Sintering 2015 Volume 47, Issue 3, Pages: 259-268
https://doi.org/10.2298/SOS1503259K
Full text ( 798 KB)
The thermal and magnetic properties of the Fe89.8Ni1.5Si5.2B3C0.5 and Fe81B13Si14C2 amorphous alloys
Kalezić-Glišović A. (Faculty of Technical Sciences, Joint Laboratory for Advanced Materials of SASA, Section for Amorphous Systems, Čačak)
Mitrović N. (Faculty of Technical Sciences, Joint Laboratory for Advanced Materials of SASA, Section for Amorphous Systems, Čačak)
Obradović N. (Institute of Technical Sciences of SASA, Belgrade)
This paper investigates the thermal and magnetic properties of two iron based
amorphous alloys with different Fe-content: Fe89.8Ni1.5Si5.2B3C0.5 and
Fe81B13Si14C2. The XRD results show that the thermal induced structural
changes occur in the temperature range of 3000C - 8500C for the
Fe89.8Ni1.5Si5.2B3C0.5 amorphous alloy. The appearance of the first
crystallization peaks on DSC thermograms of Fe81B13Si4C2, amorphous alloy is
perceived already at 4500C. The initial magnetization curves of the as-cast
sample of the Fe89.8Ni1.5Si5.2B3C0.5 amorphous alloy, obtained at the
frequencies of 50 Hz, 400 Hz and 1000 Hz show the excellent match. The
maximum relative magnetic permeability for Fe89.8Ni1.5Si5.2B3C0.5 alloy
sample is achieved at magnetic field strength of about 20 A/m for all
frequencies, whereas the values of about 7000 were obtained at the
frequencies of 50 Hz and 400 Hz. The influence of frequency on total power
losses, for both alloys exhibits the increase of core losses with frequency
increase. The amorphous alloy Fe89.8Ni1.5Si5.2B3C0.5 toroidal core exhibits
about 3 time higher total power losses.
Keywords: thermal properties, magnetic properties, initial magnetization curve, hystеresis loops, total power core losses
Projekat Ministarstva nauke
Republike Srbije, br. 172057