Effect of cobalt substitution on magnetic properties and microstructure of nanocrystalline（NdDyTb）12.3（FeZrNbCu）81.7B6.0 ribbons
来源期刊：Journal of Rare Earths2009年第3期
论文作者：包小倩 高学绪 张茂才 朱洁 周寿增
文章页码：501 - 505
摘 要：Effect of Co substitution and annealing treatment on the formation,magnetic properties and microstructure of（NdDyTb） 12.3（FeZrNbCu） 81.7-xCoxB6（x=0-15） ribbons prepared by rapid quenching and subsequent annealing was systematically investigated by means of differential scanning calorimeter（DSC） ,X-ray diffraction（XRD） ,high resolution scanning electron microscopy（HRSEM） and vibrating sample magnetometer（VSM） . Phase analysis revealed single-phase material. The remanence polarization Jr and maximum energy product（BH） max increased with increasing x from 0 to 12 and then decreased for x=15. The intrinsic coercivity Hci of（NdDyTb） 12.3（FeZrNbCu） 81.7-xCoxB6 ribbons optimally processed decreased from 1308.7 kA/m for x=0 to 817.4 kA/m for x=15. Optimum magnetic properties with Jr=1.041 T,Hci=944.9 kA/m and（BH） max=155.1 kJ/m3 were achieved by annealing melt-spun ribbon（x=12） at 675 °C for 10 min. There was no significant influence of Co substitution on microstructure.
包小倩，高学绪，张茂才，朱洁，周寿增
摘 要：Effect of Co substitution and annealing treatment on the formation,magnetic properties and microstructure of（NdDyTb） 12.3（FeZrNbCu） 81.7-xCoxB6（x=0-15） ribbons prepared by rapid quenching and subsequent annealing was systematically investigated by means of differential scanning calorimeter（DSC） ,X-ray diffraction（XRD） ,high resolution scanning electron microscopy（HRSEM） and vibrating sample magnetometer（VSM） . Phase analysis revealed single-phase material. The remanence polarization Jr and maximum energy product（BH） max increased with increasing x from 0 to 12 and then decreased for x=15. The intrinsic coercivity Hci of（NdDyTb） 12.3（FeZrNbCu） 81.7-xCoxB6 ribbons optimally processed decreased from 1308.7 kA/m for x=0 to 817.4 kA/m for x=15. Optimum magnetic properties with Jr=1.041 T,Hci=944.9 kA/m and（BH） max=155.1 kJ/m3 were achieved by annealing melt-spun ribbon（x=12） at 675 °C for 10 min. There was no significant influence of Co substitution on microstructure.
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