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摘要:
The hot pressing and hot deforming Nd2Fe14B/α-Fe nanocomposites were produced by Spark Plasma Sintering technique. Effects of pressing conditions of the microstructure and magnetic properties of the magnets were investigated. The results show that with the increase of hot press temperature, the density and the remanence of the magnets increase, while the coercivity decreases gradually, which leads to the rising of the energy at first and then decreasing. The maxium was at 94.7 kJ/m3. After hot deformation, the axis of Nd2Fe14B crystalline turned parallel to the direction of compressive pressure, thereby the magnetic anisotropic magnets were gained. However, the grain size became quite large due to high deforming temperature, therefore, the magnetic properties reduced sharply accordingly.
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来源 :
Journal of Beijing University of Technology
ISSN: 0254-0037
年份: 2007
期: 6
卷: 33
页码: 622-626