Microstructure and Magnetic Properties of the Nanocrystalline Fe-Co-Zr-Ti-Pr-B Alloys
P. Pawlik
Institute of Physics, Częstochowa University of Technology, Al. Armii Krajowej 19, 42-200 Częstochowa, Poland
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Received: 9 07 2007;
Investigation of the Fe60Co13Zr1Ti3Pr9B14 alloy 1 mm diameter rods and 3 mm outer diameter tubes showed a possibility of processing nanocrystalline magnets by direct quenching. It was revealed that the low temperature annealing of the tube samples at 573 K/10 min resulted in an improvement of the intrinsic coercivity that reaches ≈1260 kA/m, which was a similar value to that measured for thin ribbon annealed at 973 K/10 min. The X-ray diffraction analysis revealed that the hard magnetic Pr2(Fe, Co)14B was the single crystalline phase that precipitated during rapid solidification process of the tube and rod samples and during devitrification annealing of the ribbons.
DOI: 10.12693/APhysPolA.113.315
PACS numbers: 75.50.Ww, 75.50.Kj, 71.20.Eh