Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: Anisotropic Bulk Nd13.5Fe80.4Ga0.5B5.6/α-Fe Magnets Prepared by Spark Plasma Sintering Technique
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 1807-1809)
Author(s): Yi-long Ma, College of Metallurgy and Materials Engineering, Chongqing University of science and technology, Chongqing, China, 401331
Qian Shen, College of Material Science and Engineering, Chongqing University of technology, Chongqing, China, 400054
Deng-ming Chen, College of Metallurgy and Materials Engineering, Chongqing University of science and technology, Chongqing, China, 401331
Jian-chun Sun, College of Metallurgy and Materials Engineering, Chongqing University of science and technology, Chongqing, China, 401331
Abstract: Isotropic and anisotropic bulk Nd13.5Fe80.4Ga0.5B5.6/α-Fe magnets have been obtained by using spark plasma sintering (SPS) technique and the effect of soft magnetic phase content on magnetic properties has been studied. The result shows that the magnetic properties of hot-pressed magnets could be enhanced by proper addition of Fe powder. For hot-deformed magnets, the demagnetization curve has the characteristic of single hard phase magnet and the maximum energy product increases to 358 kJ/m3 at the addition of 2.5wt.% Fe. When the content of Fe is more than 5wt.%, the magnetic properties decrease due to the formation of bad texture and being oxidized during sintering.
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