Preparation and Characterization of Hybrid Bonded Magnet Ba-Ferrite/NdFeB with Epoxy Resin

Abstract:

Hybrid bonded magnet Ba-Ferrite/NdFeB with 5% wt Epoxy Resin (ER) as polymer binder hsa been developed with variations in BaFe₁₂O₁₉ to NdFeB weight ratio. The variation of the BaO6Fe₂O₃ : Nd-Fe-B weight ratio are 90%:10%; 80%:20%; 70%:30% and 60%:40%. The magnetic particle consist of Ba-Ferrite and NdFeB were mixed until homogenize and compacted by using hydraulic press machine with 8 Tonf force to form a disc shape sample. The disc sample was dried using vacuum dryer with 10 mm bar pressure at 80°C for one hour before being magnetized using impulse magnetizer. The best %wt composition ratio of Ba-Ferrite/NdFeB is 70%/30% and 60%/40%. The hybrid bonded magnetic properties at the best %wt composition ratio are: bulk density = 4.28-4.43 g/cm³, FM = 1057-1121 Gauss, Br = 3.46-3.70 kG, Hc = 3.25-3.70 kOe, and BHmax = 1.60-1.70 MGOe.

• Periodical: Materials Science Forum (Volume 864)
• Pages: 65-69
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.864.65
• Online since: August 2016
• Authors: Muljadi Muljadi*, Priyo Sardjono, Nenen Rusnaeni Djauhari, Suprapedi Suprapedi, Ramlan Ramlan
• Keywords: Ba-Ferrite, Bonded Magnet, Coercivity, Energy Product, Flux Magnetic, Hybrid Magnet, NdFeB Magnet, Remanence

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