NdFeB磁体表面电沉积铝可提高其耐蚀性，但无法在水溶液中进行。为此，在BMIC（1-丁基-3-甲基氯化咪唑）-AlCl3型离子液体中添加甲苯添加剂对NdFeB磁体恒流电沉积Al层。探讨了甲苯含量对电沉积Al层显微形貌及表面粗糙度的影响，研究了最佳甲苯含量离子液体电沉积Al层的耐蚀性。结果表明：在BMIC-AlCl3离子液体中添加20％甲苯，Al沉积层致密、平整，结合良好，甲苯的加入使Al沉积层的晶粒取向产生了变化，细化了晶粒，整平了沉积层；相对于纯离子液体电沉积灿层，添加20％甲苯所得Al沉积层的耐蚀性明显提高。
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