Microstructure and Magnetic Properties of Nd2Fe14B/α-Fe Nanocomposite Prepared by HDDR Combined with Mechanical Milling

Lian Xi Hu; Erde Wang; Bin Guo; Gang Shi

doi:10.4028/www.scientific.net/MSF.534-536.1349

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HomeMaterials Science ForumMaterials Science Forum Vols. 534-536Microstructure and Magnetic Properties of...

Microstructure and Magnetic Properties of Nd₂Fe₁₄B/α-Fe Nanocomposite Prepared by HDDR Combined with Mechanical Milling

Abstract:

Nd2Fe14B/α-Fe nanocomposite powders with a nominal composition of Nd12Fe82B6 were prepared by HDDR combined with mechanical milling. The microstructure of both the as-disproportionated and the subsequently desorption-recombination annealed alloy powders was studied by Mössbauer spectrometry and TEM. The magnetic properties were investigated by VSM using bonded magnet samples. The results showed that the annealing temperature had significant influence on both the recombination kinetics and the grain size of the Nd2Fe14B/α-Fe nanocomposite phases, and the bonded magnet samples presented the best magnetic properties when the nanocomposite powders were prepared by annealing at 760°C for 30 min.

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Periodical:

Materials Science Forum (Volumes 534-536)

Pages:

1349-1352

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.534-536.1349

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Online since:

January 2007

Authors:

Lian Xi Hu, Erde Wang, Bin Guo, Gang Shi

Keywords:

HDDR, Magnetic Property, Mechanical Milling, Microstructure, Nd₂Fe₁₄B/α-Fe Nanocomposites, Nd-Fe-B Alloys

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