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OALib Journal期刊
ISSN: 2333-9721
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微波场作用下非晶合金fe_(73．5)cu_1nb_3si_(13．5)b_9的纳米晶化
Keywords: 金属材料,非晶fe(73.5)cu1nb3si(13．5)b9
Abstract:
？研究了微波场对晶化的影响.结果表明,将非晶合金fe_(73.5)cu_1nb_3si_(13.5)b_9在微波场作用下在480℃短时间(5min)晶化处理,形成体积分数为80%、尺寸约15nm的α-fe(si)相;适当延长晶化时间(30min)使非晶合金完全晶化,α-fe(si)相的晶粒不再长大,原子层之间的距离降低至0.2461nm,磁体具有最大m_s为1.79t.与激光、激波、脉冲电场和脉冲磁场晶化处理相比,微波场晶化处理可同时获得单一的、更小晶粒尺寸和更高体积分数的α-fe(si)晶化相,使合金具有高的饱和磁化强度和优良的软磁性能.微波场有利于非晶合金中的硼原子向空位跃迁,使基体金属相α-fe(si)相的形核率增大,促进非晶合金的纳米晶化.
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