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Observation of hydrogen induced intermediate borides in PrFeB based alloys by Mössbauer effect spectroscopy |
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| Authors: | F D Saccone C E Rodrí guez Torres F H S nchez and O Gutfleisch |
| Institution: | a Dept. de fisica Facultad de ciencias exactas, Instituto de Física de La Plata, Univ. nacional de la Plata, CC 67, 1900, La Plata, Argentina b IFW Dresden, P.O. Box 270016, 01171, Dresden, Germany |
| Abstract: | In the present work, a quantitative analysis of the phase compositions by Mössbauer effect spectroscopy of solid and conventional hydrogen disproportionated Pr13.7Fe80.3B6.0 and Pr13.7Fe63.5Co16.7Zr0.1B6.0 alloys was carried out. Significant amounts of intermediate borides t-Fe3B and Pr(Fe, Co)12B6 were detected after solid hydrogen disproportionation treatment in Pr13.7Fe80.3B6.0 and Pr13.7Fe63.5Co16.7Zr0.1B6.0 alloys, respectively. After conventional hydrogenation–disproportionation–desorption–recombination treatment these phases were not detected and in no case residual Pr2Fe14B-phase was found. It was observed that the amount of intermediate borides after disproportionation can be correlated with the degree of texture after recombination at various temperatures. |
| Keywords: | PrFeB hard magnets HDDR process Magnetic anisotropy |
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