作　　者： ; ; (牧野彰宏）;

机构地区： 大连海事大学交通运输装备与海洋工程学院

出　　处： 《材料研究学报》 2015年第4期284-290,共7页

摘　　要： 用熔体快淬法制备不同Fe含量的Fe Si BPCu非晶合金并进行快速退火处理,对其晶化行为和磁性能进行了深入研究。结果表明:随着Fe含量的增加,Fe Si BPCu合金的表观晶化激活能逐渐降低;Fe Si BPCu合金的整个晶化过程析出相一致,与Fe含量无关;Fex(Si B)96-xP3Cu1(x=80,83 and 85)合金退火后得到均匀的纳米晶组织,晶粒尺寸小于20 nm,但是退火态Fe78Si6B12P3Cu1和Fe75Si8B13P3Cu1的晶粒大小很不均匀,晶粒尺寸范围为5-50 nm;退火态Fe85Si3B8P3Cu1合金表现出优异的软磁性能:矫顽力为12 A·m-1,饱和磁极化强度为1.87 T,在最大磁感应强度为1.7 T时铁损仍低于1.0,远优于广泛使用的退火态Fe78Si9B13和无取向硅钢。 Crystallization behavior and soft magnetic properties of amorphous alloys Fex(Si B)96-xP3Cu1(x=75, 78, 80, 83 and 85, atomic fraction, %) were investigated. It was found that the apparent activation energy for crystallization decreased with the increasing Fe content of the Fex(Si B)96- xP3Cu1 alloys. The phases precipitated after properly complete crystallization treatment were the same for all the alloys with varying Fe content. The annealed Fex(Si B)96- xP3Cu1(x=80, 83 and 85) alloys exhibited a uniform nanostructure with grain size smaller than 20 nm, while the grain sizes of the alloys with x=75 and 78 ranged from 5 nm to 50 nm. The saturation magnetization enhanced nonlinearly as the Fe content increased from 75 to 85. The nanocrystalline alloy Fe85Si3B8P3Cu1 exhibited excellent soft magnetic properties with a coercivity of 12 A·m-1and a saturation magnetization of 1.87 T. The core loss values of nanocrystalline alloys Fe85Si3B8P3Cu1 and Fe83Si4B9P3Cu1were still less than 1.0 W·kg- 1even if the saturation magnetic induction intensity was up to 1.7 T, which were superior to that of the commercial Fe78Si9B13 alloy and nonorientated silicon steel.

关 键 词： 金属材料 铁基非晶合金 非晶晶化 软磁性能 表观晶化激活能

领　　域： [金属学及工艺] [一般工业技术] [金属学及工艺]