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影响SmCo_5@FeCo软磁相包覆效果的关键因素
Authors
司平占
姚璐璐
+4 more
杜娟
王凤青
边宝茹
郑强
Publication date
22 March 2019
Publisher
Abstract
为获得良好磁性耦合和高磁能积的纳米复合永磁粉,系统研究了化学法包覆软磁相FeCo的关键影响因素。研究发现,在制备纳米复合磁粉SmCo_5@FeCo过程中表面活性剂的分子量、反应的加热方式、SmCo_5磁粉的预处理时间以及化学包覆反应的时间等对软磁相的形貌、尺寸、分布,以及对复合粉体的磁性能都有重要影响。表面活性剂分子量的调控和加热方式的改善可使相同量软磁相前躯物投入时形成更致密的高含量包覆层。经过酸洗预处理的SmCo_5粉更有利于软磁相包覆,酸洗时间0.5 h为佳。此结果对制备超高性能纳米复合永磁粉体及块体材料具有重要意义
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Last time updated on 27/12/2019