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Synthesis of Nd2Fe14B powders by spray-drying and reduction–diffusion processes

Published online by Cambridge University Press:  31 January 2011

X. L. Dong ,
B. K. Kim ,
C. J. Choi ,
K. S. Park  and
Z. D. Zhang
X. L. Dong
Affiliation:
Korea Institute of Machinery and Materials, 66 Sangnam-Dong, Changwon, Kyungnam, Korea and Laboratory of Ultrafine Particles, Shenyang Polytechnic University, 110023, Shenyang, People's Republic of China
B. K. Kim
Affiliation:
Korea Institute of Machinery and Materials, 66 Sangnam-Dong, Changwon, Kyungnam, Korea
C. J. Choi
Affiliation:
Korea Institute of Machinery and Materials, 66 Sangnam-Dong, Changwon, Kyungnam, Korea
K. S. Park
Affiliation:
Korea Institute of Machinery and Materials, 66 Sangnam-Dong, Changwon, Kyungnam, Korea
Z. D. Zhang
Affiliation:
International Centre for Materials Physics, Institute of Metal Research, Academia Sinica, 110015, Shenyang, People's Republic of China
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Abstract

The magnetic Nd–Fe–B powders were prepared by a mechanochemical method, including the processes of spray drying, debinding, milling, H2 reduction, Ca reduction, and washing. The liquid solution dissolved with various metal salts was first spray-dried to prepare the precursor powders having uniformly dispersed Nd, Fe, and B components. The precursor powders in turn were subjected to the subsequent processes. The particle size of the resultant Nd–Fe–B powders was about 1 μm. Effects of the process parameters on phases, morphologies, microstructures, compositions, and thermal properties of the powders were investigated.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 4 , April 2001 , pp. 1083 - 1089
Copyright
Copyright © Materials Research Society 2001

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