Corrosion Resistance of Sintered NdFeB Magnets with Various Surface Coatings

E. Chen; Kun Peng; Wu Lin Yang; Jia Jun Zhu; De Yi Li; Ling Ping Zhou

doi:10.4028/www.scientific.net/AMM.492.263

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Synthesis of Fe₃O₄ Nanotubes under Assistance of Microwave by Tuning Chemical Deposition Mechanism and its Magnetic Properties
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Corrosion Resistance of Sintered NdFeB Magnets with Various Surface Coatings
p.263

Preparation and Characterization of Conductive Filler Used for Electromagnetic Shielding Materials
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 492Corrosion Resistance of Sintered NdFeB Magnets...

Corrosion Resistance of Sintered NdFeB Magnets with Various Surface Coatings

Abstract:

Pure Ni coating and multi-layered Ni-P coatings were deposited on sintered NdFeB magnets by ion beam sputtering and electroless plating to improve the corrosion resistance of magnets, respectively. The structure and preferred growth orientation, surface morphology, the adhesive strength between coatings and magnets, and corrosion properties of samples were investigated by XRD, SEM, high-low temperature shock test and potentiodynamic polarization curves, respectively. It was found that electroless Ni-P coatings are amorphous with nodules distributed, Ni coating deposited by ion beam sputtering is crystalline and spherical Ni grains are densely packed. Ni coating deposited by ion beam sputtering can provide better protection for sintered NdFeB than that of electroless Ni-P coating.

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Periodical:

Applied Mechanics and Materials (Volume 492)

Pages:

263-267

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.492.263

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Online since:

January 2014

Authors:

E. Chen, Kun Peng, Wu Lin Yang, Jia Jun Zhu, De Yi Li, Ling Ping Zhou

Keywords:

Corrosion Resistance, Electroless Plating, Ion Beam Sputtering, NdFeB, Ni Coating

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