采用圆铜管包覆拉拔镍铁合金丝后经电解化学处理制备出了单丝长度38~40mm,直径约10μm吸波镍铁纤维束丝。采用扫描电镜、X射线衍射、振动样品磁强计(VSM)及纺织纤维性能测试仪器对纤维的形貌、组分、磁性能及可纺性能进行了表征分析。实验结果表明此镍铁纤维截面呈不规则异形,纵向光滑有多道沟槽、无卷曲,长径比达3800以上,此结构有利于增强其可纺性能和吸波性能。纤维镍、铁总含量高达90%以上,比饱和磁化强度达63.45A·m2/kg,初始磁导率达2035H/m,远高于常规铁氧体吸波材料；其拉伸、弯曲、摩擦等可纺性能与不锈钢纤维、棉纤维做了对比,预测了镍铁纤维可用于纺织加工开发柔性吸波织物。
Ni-Fe microwave absorbing fiber bundle was prepared by copper coated Ni-Fe alloy wire and electro-chemical treatment,which monofilament length was of 38 to 40mm and diameter of about 10μm.The morphol-ogy,composition,magnetic properties and spinnability of the fiber have been characterized by scanning electron microscopy (SEM)analysis,X-ray photoelectron,vibrating sample magnetometer (VSM)and textile fiber per-formance test instruments.It was shown that,this nickel iron fiber cross-section was irregular profiled,multi-ple smooth longitudinal channels exist,no curling,fiber aspect ratio was up to 3800 or more,which structure was conducive to enhance microwave absorbing properties and spinnability.Nickel and iron total content was up to 90%,it of high saturation magnetization of 63.45A·m2/kg and high initial permeability of 2035H/m, which was much higher than conventional ferrite absorbing materials.Its tensile,bending and friction spinna-bility were compared with stainless steel fibers and cotton fibers.It predicted this article nickel iron fiber was applied for textile processing development of flexible absorbing fabric.
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