Normal and abnormal grain growth in fine-grained Nd-Fe-B sintered magnets prepared from He jet milled powders

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• 作者：F. Bittner^a ; ^b ; ^{f.bittner@ifw-dresden.de} ; T.G. Woodcock^a ; L. Schultz^a ; ^b ; C. Schwö ; bel^c ; O. Gutfleisch^c ; ^d ; G.A. Zickler^e ; J. Fidler^e ; K. Ü ; stü ; ner^f ; M. Katter^f
• 关键词：Nd-Fe-B ; Permanent magnet ; Abnormal grain growth ; Coercivity ; Electron backscatter diffraction
• 刊名：Journal of Magnetism and Magnetic Materials
• 出版年：2017
• 出版时间：15 March 2017
• 年：2017
• 卷：426
• 期：Complete
• 页码：698-707
• 全文大小：1954 K
• 卷排序：426

文摘

He Jet milling to reduce Nd-Fe-B grain size and to enhance coercivity. Normal and abnormal grain growth observed for low temperature sintering. Well oriented abnormal grown grains explained by size dependent field alignment. Poor rectangularity is caused by low nucleation field of abnormal grown grains.