用数理统计方法研究了粉末烧结Nd-Fe-B永磁体磁性能的均匀性.分析发现,粉末取向度对均匀性有很大影响,随装填密度增加,取向度变小,磁性减弱,分布的离散度变宽.磁体磁通量的分布受成分、取向磁场和密度等多种随机因素的影响,统计结果比较好地服从正态分布.
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