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本文研究了制备态和850℃、保温30min真空处理后Sendust微晶薄带的力学性能、磁性与薄带厚度的关系。试验带材尺寸:厚16～80μm,宽1～2mm,长为2～3m。带厚<40μm时,最小曲率直径为4～5mm;>40μm时,曲率直径迅速增加。带材表面粗糙度约为1.5μm。带材硬度为HV>500。薄带经850℃、30min真空处理后,磁感应强度B_(10)=0.9-0.93T,H_c=1.6～2.4A/m,最大导磁率约为10~5,<40μm厚的薄带损耗值随厚度变化不大。但带厚>40μm时,损耗值随厚度增加而增加。对40μm厚的带,有效导磁率在1～40kHz间有一极大值。作者们还用X光衍射观查了带材的组织结构,得知合金以Fe_3(SiAl)为主相。
In this paper, the mechanical properties and magnetic properties of Sendust microcrystalline ribbons after vacuum treatment at 850 ℃ for 30min have been studied. Test strip size: thickness 16 ~ 80μm, width 1 ~ 2mm, length of 2 ~ 3m. With a thickness of <40μm, the minimum curvature diameter of 4 ~ 5mm;> 40μm, the rapid increase in the diameter of the curvature. Strip surface roughness of about 1.5μm. Tape hardness HV> 500. After vacuum treatment at 850 ℃ for 30min, the magnetic flux density B_ (10) = 0.9-0.93T, H_c = 1.6 ~ 2.4A / m and the maximum permeability is about 10 ~ 5. Little change in thickness. But with a thickness of> 40μm, the loss increases with increasing thickness. For 40μm thick tape, the effective permeability between 1 ~ 40kHz has a maximum value. The authors also observed the structure of the strip by X-ray diffraction and found that the alloy is mainly composed of Fe 3 (SiAl).