Effect of Doping of Ti and C on Crystallization and Magnetic Properties of NdPrFeB Thick Melt-Spun Ribbons

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• 作者：Peng Haijun^a ; ^{haijunpeng1983@yahoo.com.cn} ; Zhang Maocai^b ; Bao Xiaoqian^b
• 关键词：nanocomposite magnets ; thick ribbons ; microstructure
• 刊名：Rare Metal Materials and Engineering
• 出版年：2012
• 期刊代码：P57_18755372
• 类别：et
• 出版时间：February, 2012
• 卷：41
• 期：2
• 页码：212-214
• 文件大小：482 K

摘要

Effects of Ti and C addition on crystallization process and magnetic properties of NdPrFeB thick ribbons were investigated. The results show that doping of Ti suppresses the formation of (Nd,Pr)₂Fe₂₃B₃ metastable phase and refines grains of the alloys and increases coercivity significantly. In the case of co-addition of Ti and C, the coercivity is decreased but the remanence is enhanced with increasing of C content. The magnetic properties of J_r=0.88 T, H_cj=618 kA/m and (BH)_max=109.8 kJ/m³ are achieved in the (Nd_0.4Pr_0.6)₉Fe₇₂Ti₄B₁₁C₄ ribbons after optimal annealing.