用注射压铸方法制造了直径为1.0 mm的棒状Nd8 Fe87.5B4.5纳米复合永磁体,分别用电脉冲和传统等温退火方法对样品进行了均匀热处理,并用X射线衍射(XRD)和透射电镜(TEM)分析了样品的微结构.结果发现,经电脉冲方法退火的样品晶粒尺寸比用传统等温炉退火更规则更均匀,使Hc和(BH)m分别提高16.5%和13.4%.
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