Preparation of magnetic composites through SrO-Fe2O3-Al2O3-B2O3 glass crystallizationстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Glasses with nominal compositions 11SrO center dot 5.5Fe(2)O(3) center dot 4.5Al(2)O(3) center dot 4B(2)O(3) (1) and 15SrO center dot 5.5Fe(2)O(3) center dot 4.5Al(2)O(3) center dot 4B(2)O(3) (2) were prepared by rapidly quenching oxide melts between counterrotating steel rollers. The glasses were then heat-treated in the range 650-950A degrees C to produce glass-ceramic samples. The samples were characterized by X-ray diffraction, electron microscopy, and magnetic measurements. The phase composition of the glass-ceramics was determined, and their microstructure and magnetic properties were studied. The annealing temperature was shown to have a strong effect on the coercivity of the materials, which reaches 650 and 570 kA/m for compositions 1 and 2, respectively.