Structure and Mössbauer analysis of melt-spun Fe-Pd ribbons containing Ni and Co
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Fe68.45Pd28.21Co1.66Ni1.66 alloy in ribbon geometry was produced by melt spinning. The microstructure of the samples was examined using scanning electron microscopy. The structural identification of the as-spun ribbon sample and the annealed ones was performed by means of X-ray diffraction. All the Bragg peaks were indexed based on an fcc type structure of (¿-Fe, Pd) phase with a lattice parameter a = 3.742 (3) Å. This result was proved by Mössbauer technique. The annealed ribbon at 600 °C shows an L1_0 ordered fct structure. An endothermic reaction at T = 358 °C followed by an exothermic one at 390 °C were observed on heating. These reactions were attributed to the Curie temperature of nickel and to the annihilation of an excess of quenched-in vacancies, respectively.
CitacióRekik, H., Chemingi, M., Bachaga, T., Cherif, A., Bruna, P., Suñol, J.J., Khitouni, M. Structure and Mössbauer analysis of melt-spun Fe-Pd ribbons containing Ni and Co. "Metals", 05 Juny 2015, vol. 5, núm. 2, p. 1020-1028.