Influence of zirconium addition on the microstructure and magnetic properties of nanocomposite Nd10.1Fe78.2-xCo5ZrxB6.7 permanent magnets
来源期刊：Rare Metals2007年第3期
论文作者：LIU Yuan a, b, YU Jinjiang a, XU Yan a, SUN Xiaofeng a, GUAN Hengrong a, and HU Zhuangqi a a Institute of Metal Research, Chinese Academy of Sciences, Shenyang , China b Graduate School of Chinese Academy of Sciences, Beijing , China
文章页码：218 - 221
摘 要：Nanocomposite Nd10.1Fe78.2?xCo5ZrxB6.7 （x = 0, 1.5, 2.5, 2.7, 3, 4） permanent magnets were prepared by melt-spun and annealing. The microstructure and magnetic properties of the permanent magnets were investigated. The re- sults reveal that the addition of Zr element significantly reduces the grain size and improves the thermal stability of the amorphous phase. A fine nanocomposite microstructure with an average grain size of about 35 nm can be developed at a wheel speed of 16 m·s?1 with the content of Zr up to 2.7 at.%. After optimal annealing （710°C× 4 min）, the magnetic prop- erties of the Nd10.1Fe75.5Co5Zr2.7B6.7 bonded magnets were achieved as follows: Br = 0.72 T, jHc = 769 kA·m?1, and （BH）max = 85.0 kJ·m?3.
FENG Shanshan, NI Jiansen, WANG Zhanyong, WU Yisheng, ZHOU Bangxin, and XU Hui Institute of Materials Science, Shanghai University, Shanghai 20007, China
摘 要：Nanocomposite Nd10.1Fe78.2?xCo5ZrxB6.7 （x = 0, 1.5, 2.5, 2.7, 3, 4） permanent magnets were prepared by melt-spun and annealing. The microstructure and magnetic properties of the permanent magnets were investigated. The re- sults reveal that the addition of Zr element significantly reduces the grain size and improves the thermal stability of the amorphous phase. A fine nanocomposite microstructure with an average grain size of about 35 nm can be developed at a wheel speed of 16 m·s?1 with the content of Zr up to 2.7 at.%. After optimal annealing （710°C× 4 min）, the magnetic prop- erties of the Nd10.1Fe75.5Co5Zr2.7B6.7 bonded magnets were achieved as follows: Br = 0.72 T, jHc = 769 kA·m?1, and （BH）max = 85.0 kJ·m?3.
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