NDLI: Phase formation and magnetic properties of nanocrytalline Ni70Co30 alloy prepared by mechanical alloying

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Phase formation and magnetic properties of nanocrytalline Ni70Co30 alloy prepared by mechanical alloying

Content Provider	Hyper Articles en Ligne (HAL)
Author	Loudjani, Nadia Gouasmia, Takrim Bououdina, Mohamed Bobet, Jean-Louis
Copyright Year	2020
Abstract	Nanocrystalline Ni70Co30 alloy was synthesized by high energy ball alloying from elemental pure Ni and Co powders as function of milling time. The changes in structural, morphological and magnetic properties of the processed powders during mechanical alloying were characterized respectively by X-ray diffraction, scanning electron microscopy and vibrating sample magnetometer. X-ray diffraction analysis suggested the formation of two fcc nanostructured solid solutions fcc-Co(Ni) and fcc-Ni(Co), where the crystallite size decreases reaching 4.7–8.0 nm while the microstrain increases up to 0.39–0.42%, due to the severe plastic deformations and the structural defects introduced by milling. Morphological observations indicated a progressive refinement of the particles size with milling time. For longer milling, a narrow particle size distribution with irregular shape was observed. Milling process induced some important changes in the magnetic properties, whereas the variation of the saturation magnetization and coercivity was associated mainly to the particle size refinement, accumulation of microstrain and formation of solid solutions Co(Ni) and Ni(Co).
Related Links	https://hal.science/hal-02930866/file/2020-111.pdf
ISSN	09258388
DOI	10.1016/j.jallcom.2020.156392
Volume Number	846
Journal	Journal of Alloys and Compounds
Language	English
Publisher	HAL CCSD Elsevier
Publisher Date	2020-01-01
Access Restriction	Open
Subject Keyword	Nanostructures Solid solution Ni70Co30 Magnetic properties Mechanical alloying Material chemistry Chemical Sciences
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Metals and Alloys Mechanics of Materials Chemical Engineering Mechanical Engineering

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