Rare earth permanent magnets Sm2（Co, Fe, Cu, Zr）17 for high temperature applications
来源期刊：Journal of Rare Earths2008年第3期
论文作者：彭龙 张怀武 徐光亮
文章页码：378 - 382
摘 要：Sintered Sm（CobalFexCu0.1Zr0.03）7.5 （x=0.09-0.21） permanent magnets with higher Fe content were found to have higher remanence Br and maximum energy product （BH）max at room temperature. Br and （BH）max reached maximum of 0.96 T and 176.7 kJ/m3, respectively at room temperature when the Fe content x reached 0.21. However, the intrinsic coercivity Hci at room temperature increased gradually when the Fe content x increased from 0.09 to 0.15, but when x further increased to 0.21, Hci decreased. Hci attained its peak value of 2276.6 kA/m with Fe content x=0.15 at room temperature. For magnets with x=0.15, Br, （BH）max and Hci reached 0.67 T, 81.2 kJ/m3 and 509.4 kA/m at 500 °C, respectively, showing good high temperature stability, which could be used in high temperature applications.
彭龙1，张怀武1，徐光亮2
1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China2. Shcool of Materials Science and Engineering, Southwest University of Science and Technology
摘 要：Sintered Sm（CobalFexCu0.1Zr0.03）7.5 （x=0.09-0.21） permanent magnets with higher Fe content were found to have higher remanence Br and maximum energy product （BH）max at room temperature. Br and （BH）max reached maximum of 0.96 T and 176.7 kJ/m3, respectively at room temperature when the Fe content x reached 0.21. However, the intrinsic coercivity Hci at room temperature increased gradually when the Fe content x increased from 0.09 to 0.15, but when x further increased to 0.21, Hci decreased. Hci attained its peak value of 2276.6 kA/m with Fe content x=0.15 at room temperature. For magnets with x=0.15, Br, （BH）max and Hci reached 0.67 T, 81.2 kJ/m3 and 509.4 kA/m at 500 °C, respectively, showing good high temperature stability, which could be used in high temperature applications.
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