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HomeKey Engineering MaterialsKey Engineering Materials Vol. 822Effect of High Energy Ball Milling Washing Process...

Effect of High Energy Ball Milling Washing Process on Properties of Nd₂Fe₁₄B Particles Obtained by Reduction-Diffusion

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Abstract:

Nd₂Fe₁₄B particles were obtained from mixture of neodymium oxide, iron oxide, boric acid and CaH₂ by reduction-diffusion process. Two different washing processes were used for the separation of magnetic particles from Ca and CaO matrix: usual washing with water and planetary ball milling process in ethanol media. Nd₂Fe₁₄BH_x hydrogenated state was formed after usual washing with water. Ethanol planetary ball milling washing procedure prevented the formation of Nd₂Fe₁₄B hydrides during washing. Variation of milling parameters allowed producing particles with different morphology such as spherical or flakes after planetary ball milling washing process. Influence of milling parameters on magnetic properties of Nd₂Fe₁₄B powder was investigated.

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Periodical:

Key Engineering Materials (Volume 822)

Pages:

244-251

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.822.244

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Online since:

September 2019

Authors:

Vitalii Galkin, Kamran Haider, Jong Bin Ahn, Dong Soo Kim*

Keywords:

Calciothermic Reduction, Hard Magnetic Particles, High-Energy Ball Milling, Nd₂Fe₁₄B, Rare Earth

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© 2019 Trans Tech Publications Ltd. All Rights Reserved

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