酸性镀液中以硼酸为缓冲剂、柠檬酸三钠为配合剂,在紫铜箔上电沉积得到非晶Fe-Ni-s合金薄膜.采用扫描电子显微镜和能谱分析技术(EDS)研究了镀液组成和沉积条件对镀层表面形貌和组成的影响.结果表明,在镀液中加入2 g/L C2H5O3NS(糖精)和0.4 g/L 1,4-丁炔二醇可获得表面平整无裂缝和较小内应力的合金镀层;电流密度和镀液pH值对镀层组成影响较小,但施镀温度对镀层组成影响较大.获得了理想的镀液组成和沉积条件,所得Fe73Ni95S175薄膜的X射线衍射表明其为非晶结构,在室温下具有较高的饱和磁化强度(Ms约为876.25 kA/m)和较低的矫顽力(Hc约为4.96 kA/m),具有良好的软磁性能.循环伏安曲线和阴极极化曲线均表明,镀液中CS(NH2)2会促进Fe-Ni-S共沉积.
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