Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 242, Issue -, Pages 1329-1334Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0304-8853(01)00967-2
Keywords
permanent magnet-rare earth; sintered magnets; heat-treatment; grain boundaries; microstructure; coercivity
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The purpose of this study was to better understand the metallurgical transformations that occur during beat treatment of Nd-based magnets. DSC analysis and microstructural investigations of the grain boundaries with SEM and TEM were carried out, DSC permitted to optimize the heat treatment. Microstructural investigations always showed the presence of thin and smooth RE-rich film, associated with the highest coercivity. (C) 2002 Elsevier Science B.V. All rights reserved.
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