Effects of Nb substitution for Zr on the phases,microstructure and magnetic properties of Co80Zr18−xNbxB2 melt-spun ribbons |
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| Authors: | Zhipeng Hou Jinbao Zhang Shifeng Xu Chunji Wu Jingjing Zhang Zihan Wang Kunlong Yang Wenquan Wang Xiaobo Du Feng Su |
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| Affiliation: | 1. College of Physics, Jilin University, Changchun 130023, People''s Republic of China;2. College of Science, Shenyang Aerospace University, Shenyang 110136, People''s Republic of China |
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| Abstract: | The phases, microstructure, and magnetic properties of Co80Zr18−xNbxB2 (x=1, 2, 3, and 4) melt-spun ribbons were investigated. The small substitution of Nb for Zr in the Co–Zr–B melt-spun ribbons resulted in the improvement of magnetic properties, especially the coercivity. The main effect of added Nb on the coercovity of Co–Zr–Nb–B melt-spun ribbons, originated from modification of the grain size of Co11Zr2 phase. The coercivity of the Co–Zr–Nb–B melt-spun ribbons depends on the annealing temperature. The optimal magnetic properties of Hc=5.1 kOe, and (BH)max=3.4 MGOe were obtained in the Co80Zr15Nb3B2 melt-spun ribbons annealed at 600 °C for 3 min. |
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| Keywords: | Co&ndash Zr&ndash Nb&ndash B alloys Melt-spun ribbons Coercivity Co11Zr2 phase Permanent magnets |
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