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Article Dans Une Revue Journal of Magnetism and Magnetic Materials Année : 2010

Synthesis of nanocrystalline Supermalloy powders by mechanical alloying: A thermomagnetic analysis

Résumé

Nanocrystalline Supermalloy powders (79Ni19Fe5Mo, wt%) were obtained by mechanical alloying under argon atmosphere and subsequent annealing. Several milling times ranging from 2 to 32 h have been used. The alloy formation was checked by X-ray diffraction and magnetic measurements. The Curie temperature measurements illustrate the progressive formation of the alloy until 16 h of milling. The evolution of the ferromagnetic-paramagnetic transition and the formation of the alloy in the milled samples are discussed considering the heating and cooling part of the thermomagnetic measurements. A difference between the Curie temperatures measured on the heating and cooling curves was observed. This difference has been interpreted as resulting from a powder contamination with iron for longer milling times.

Dates et versions

hal-00989288 , version 1 (10-05-2014)

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Citer

Florin Popa, Olivier Isnard, Ionel Chicinas, Viorel Pop. Synthesis of nanocrystalline Supermalloy powders by mechanical alloying: A thermomagnetic analysis. Journal of Magnetism and Magnetic Materials, 2010, 322, pp.1548-1551. ⟨10.1016/J.JMMM.2009.06.006⟩. ⟨hal-00989288⟩

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