Crystallite Size and Magnetic Properties of HDDR Powders Obtained from PrFeCoBNb Alloys

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The first goal of this work involved the study of HDDR powders obtained from annealed alloys with the general formula: PrxFe77.9-xCo16B6Nb0.1 (x = 12; 12.5; 13; 13.5 and 14). The alloys were processed at desorption / recombination temperature of 840°C. The highest magnetic properties were obtained with 13.5 at. % Pr (Br= 1000mT and µ0iHc= 890mT). The alloy with a minimum praseodymium content (12 at. %) exhibited the lowest magnetic properties (Br= 350mT e iHc= 120mT). The second aim of the work involved the characterization of HDDR powders using X-ray diffraction for phase quantification and mean crystallite sizes determination of the hard magnetic phase. The processed powders were characterized by scanning electron microscopy (SEM).

Info:

Periodical:

Materials Science Forum (Volumes 660-661)

Edited by:

Lucio Salgado and Francisco Ambrozio Filho

Pages:

308-313

DOI:

10.4028/www.scientific.net/MSF.660-661.308

Citation:

S.C. Silva et al., "Crystallite Size and Magnetic Properties of HDDR Powders Obtained from PrFeCoBNb Alloys", Materials Science Forum, Vols. 660-661, pp. 308-313, 2010

Online since:

October 2010

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Price:

$35.00

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