Study on magnetization reversal behavior for annealed Nd2Fe14B/α-Fe nancomposite alloys
来源期刊：JOURNAL OF RARE EARTHS2013年第8期
论文作者：张朋越 泮敏翔 葛洪良 岳明 刘卫强
文章页码：759 - 764
摘 要：Effect of thermal annealing on the magnetization reversal behavior of α-Fe/Nd2Fe14B alloys was investigated. A drastic increase of the remanence Mr from 0.67 up to 0.87 T and remanence ratio Mr/Ms from 0.66 up to 0.76, respectively, was observed in the α-Fe/Nd2Fe14B alloys annealed at 610 ℃ as compared with the as-quenched sample. Whereas the further annealing at 680 ℃ resulted in a strong increase of the corecivity Hc as high as 491 kA/m but a slight decrease in Mr . The analysis result of the magnetization reversal behavior showed that the maximum value of the integrated recoil loop area about 1.58 kJ/m 3 was obtained in the α-Fe/Nd2Fe14B alloys at the annealing temperature of 610 ℃, significantly lower than other annealed samples. This indicated a significant advantage for the application of this material as permanent magnets in electrical machines and generators due to a low energy loss.
张朋越1，泮敏翔1，葛洪良1，岳明2，刘卫强2
1. College of Materials Science & Engineering, China Jiliang University2. College of Materials Science & Engineering, Beijing University of Technology
摘 要：Effect of thermal annealing on the magnetization reversal behavior of α-Fe/Nd2Fe14B alloys was investigated. A drastic increase of the remanence Mr from 0.67 up to 0.87 T and remanence ratio Mr/Ms from 0.66 up to 0.76, respectively, was observed in the α-Fe/Nd2Fe14B alloys annealed at 610 ℃ as compared with the as-quenched sample. Whereas the further annealing at 680 ℃ resulted in a strong increase of the corecivity Hc as high as 491 kA/m but a slight decrease in Mr . The analysis result of the magnetization reversal behavior showed that the maximum value of the integrated recoil loop area about 1.58 kJ/m 3 was obtained in the α-Fe/Nd2Fe14B alloys at the annealing temperature of 610 ℃, significantly lower than other annealed samples. This indicated a significant advantage for the application of this material as permanent magnets in electrical machines and generators due to a low energy loss.
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