MÖSSBAUER STUDIES ON THE HYDROGEN DECREPITATION AND DESORPTION OF Nd16Fe76B8 MAGNET

MÖSSBAUER STUDIES ON THE HYDROGEN DECREPITATION AND DESORPTION OF Nd₁₆Fe₇₆B₈ MAGNET

Yu Zhengfang，

Zhang Jiangao，

Zheng Yufang

Nuclear Science and Techniques

Vol.3, No.2

pp.145-148

Published in print 01 May 1992

33500

Hydrogen decrepitation and desorption of the Nd₁₆Fe₇₆B₈ magnet are studied by X- ray diffraction analysis and ⁵⁷Fe Mössbauer spectroscopy. The results of the as- cast alloy samples treated under various hydrogen gas pressures at various temperatures are reported. A special hydrogenation- dehydrogenation treatment of the Nd- Fe- B cast alloy can produce excellent isotropic magnet powders and the treated sample has passed a hydrogenation- disproportion- recombination process. The effect of the presence of α - Fe in magnet powders is discussed.

Mössbauer spectroscopyNd16Fe76B8 magnet Hydrogen decrepitationDesorption

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