| Autor: |
Silva, S.C., Duvaizem, José Hélio, de Faria, Rubens Nunes, Takiishi, Hidetoshi |
| Zdroj: |
Materials Science Forum; October 2010, Vol. 660 Issue: 1 p308-313, 6p |
| Abstrakt: |
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 840ºC. 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). |
| Databáze: |
Supplemental Index |
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