Microstructural Characterization of a High Copper (Nd_0.75Pr_0.25)₂Fe₁₄B Magnet

Abstract:

A commercial magnet following the N 48 specification was submitted to a detailed microstructural characterization. The magnet presents 10 kOe of coercivity and good 2^nd quadrant squareness. The grain size is around 10 micrometers. Scanning electron microscope (SEM) EDAX analysis shows that it is a high copper NdPrFeB alloy following the 3Nd:1Pr proportion, with some aluminum. The magnet was covered by a 15 micrometers layer, with nickel and copper. The microstructural data allow a better understanding of the effect of the alloying elements.

• Periodical: Materials Science Forum (Volume 802)
• Pages: 518-523
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.802.518
• Online since: December 2014
• Authors: Marcos F. de Campos, Daniel Rodrigues, Flavia P. Vitoretti, Leonardo V. Tavares, Kaio S.T. de Souza, José A. de Castro
• Keywords: Magnets, Microstructure, NdPrFeB

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