Preparation of Porous Fe-Ni Soft Magnetic Powders by Fe-N Alloys Transformation

Abstract:

The porous Fe-Ni powders were successfully prepared by the gas nitriding, electroless plating and then removal of denitrogen & phosphorus under high temperature. The phases of the powders were determined by X-ray diffraction (XRD) utilizing Cu Ka radiation. Scanning electron microscope (SEM) was used to characterize the morphology of the porous powders. The magnetic properties of the powders were measured by a vibration sample magnetometer (VSM). The result shows that the porous Fe-Ni-N powder was mainly composed of γ’-Fe4 N and FeNi3 while the porous Fe-Ni powders were comprised by Fe0.64Ni0.36 and Ni. The porous Fe-Ni powder has a good soft magnetic property with Saturation Magnetization of 113.5emu/g and coercivity of 162.9Oe.

• Periodical: Applied Mechanics and Materials (Volumes 217-219)
• Pages: 1121-1125
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.217-219.1121
• Online since: November 2012
• Authors: Guo Dong Cui, Yan Shuo Zhang, Chuan Yang, Hai Chun Jiang, Guo Qing Gao
• Keywords: Electroless Plating (EP), Gas Nitriding, Magnetic Property, Porous Fe-Ni Powder

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