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含9.6%Si,5.4%Al,其余为Fe组成的Fe-Si-Al(Sendust)合金,由于K、λ趋近于零,具有良好的磁特性.该合金电阻率高(ρ=90μ?·cm),高频下仍保持较好的磁性和较低的损耗,在金属软磁材料中,它不但有较高的饱和磁感(B_s),而且硬度大(HV=480～500),适合用做磁头铁芯材料,尤其做视频磁头铁芯(如黑白录象磁头,彩色录象磁头).但该合金致命弱点是难加工,这严重的影响了它的使用范围.如能将Fe-si-Al合金制成带材,就会使其得到广泛应用.近年来,国内外采用快速淬火方法制备各种合
Fe-Si-Al (Sendust) alloy containing 9.6% Si, 5.4% Al and the rest Fe has good magnetic properties due to K, λ approaching zero.The alloy has high resistivity (ρ = 90μ · · cm). It keeps good magnetic properties and low loss under high frequency. It has high saturation magnetization (B_s) and high hardness (HV = 480 ~ 500) in metal soft magnetic materials, which is suitable Used as head core material, especially as a video head iron core (such as black and white video heads, color video heads.) However, the fatal weakness of the alloy is difficult to process, which seriously affected its use, such as the Fe- Si-Al alloy strip, it will make it widely used.In recent years, the rapid quenching methods at home and abroad to prepare various combinations