稳恒磁场对循环镀液电沉积铁-硅复合镀层的影响

发布时间：2018-10-20 10:47

【摘要】：以镀铁溶液为基础,采用不同硅质量分数的Fe-Si合金颗粒作为第二相,在施加稳恒磁场和镀液循环的条件下,以无取向低硅钢薄带为基材复合电沉积Fe-Si镀层,考察了颗粒硅含量、磁场强度和电流密度对Fe-Si复合镀层形貌及硅质量分数的影响。随着磁场强度的增大,采用Fe-Si合金颗粒作为第二相所得Fe-Si复合镀层的硅含量显著升高,而采用纯Si颗粒作为第二相所得Fe-Si复合镀层的硅含量升高得较平缓。当镀液中Fe-50%Si颗粒为20g/L时,在平均电流密度2A/dm~2下电沉积所得镀层的硅质量分数可达18.87%。另外,采用Fe-30%Si合金颗粒作为第二相时所得Fe-Si复合镀层表面的颗粒具有定向排列的趋势。
[Abstract]:On the basis of iron plating solution, Fe-Si alloy particles with different silicon mass fraction were used as the second phase. Under the condition of stable magnetic field and bath cycle, Fe-Si coating was electrodeposited with non-oriented low silicon steel thin strip as substrate, and the silicon content of particles was investigated. The effect of magnetic field intensity and current density on the morphology and silicon mass fraction of Fe-Si composite coating. With the increase of magnetic field intensity, the silicon content of Fe-Si composite coating obtained by using Fe-Si alloy particles as the second phase increased significantly, while the silicon content of Fe-Si composite coating obtained by using pure Si particles as the second phase increased more slowly. When the Fe-50%Si particle in the bath is 20g/L, the silicon content of the electrodeposited coating can reach 18.87 at the average current density 2A/dm~2. In addition, when Fe-30%Si alloy particles are used as the second phase, the particles on the surface of Fe-Si composite coating have a trend of directional arrangement.
【作者单位】：贵州理工学院贵州省轻金属材料制备技术重点实验室;上海大学上海市现代冶金与材料制备重点实验室;
【基金】：国家自然科学基金(51664009,51664010) 贵州省科技计划项目(黔科合基础[2016]1067,黔科合LH字[2016]7101) 贵州省教育厅创新群体项目(黔教合KY字[2016]043) 贵州理工学院高层次人才启动项目(XJGC20161212)
【分类号】：TQ153

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