循环镀液电沉积法制备Fe-Si镀层试验研究

发布时间：2018-10-12 10:33

【摘要】：研究了采用硅质量分数为50%的Fe-Si合金颗粒为原料,以循环镀液电沉积法制备Fe-Si复合镀层,考察了电极位向、镀液流速、颗粒质量浓度及电流密度对Fe-Si复合镀层形貌及硅质量分数的影响。结果表明:采用竖直电极电镀时,当电镀槽镀液向下循环搅拌时,获得的镀层中硅质量分数较低;当镀液向上循环时,镀层中硅质量分数随镀液流速增大呈先升高后降低趋势,镀层硅质量分数达10.33%;采用水平电极电镀时,随镀液流速增大,镀层中硅质量分数呈先升高后降低趋势,镀层硅质量分数可达28.47%,但显著高于竖直电极电镀时获得的镀层硅质量分数;同时,随电流密度增大,采用竖直电极电镀获得的镀层硅质量分数升高,在电流密度为2.5A/dm~2时达最大;采用水平电极电镀获得的镀层硅质量分数随电流密度增大而显著降低。
[Abstract]:The preparation of Fe-Si composite coating by cyclic electrodeposition with 50% Fe-Si alloy particles by mass fraction of silicon was studied. The electrode orientation and bath flow rate were investigated. Effects of particle mass concentration and current density on morphology and silicon content of Fe-Si composite coating. The results show that the silicon mass fraction in the plating bath is lower when the vertical electrode is electroplated and the silicon mass fraction in the plating bath increases first and then decreases with the increase of the bath flow rate when the plating bath is circularly stirred down, and when the plating bath circulates upward, the silicon mass fraction in the plating bath increases first, and then decreases with the increase of the bath flow rate. The mass fraction of silicon in the coating reaches 10.33. With the increase of the flow rate of the plating solution, the mass fraction of silicon in the coating increases first and then decreases. The silicon mass fraction of the coating can reach 28.47%, but it is significantly higher than that obtained by the vertical electrode electroplating, at the same time, with the increase of the current density, the silicon mass fraction of the coating obtained by the vertical electrode electroplating increases, and reaches the maximum at the current density of 2.5 A / dm-2. The silicon content of the coating obtained by horizontal electrode electroplating decreased significantly with the increase of current density.
【作者单位】：贵州理工学院材料与冶金工程学院贵州省特种功能材料协同创新中心;
【基金】：国家自然科学基金资助项目(51664009) 贵州省科技计划项目(黔科合LH字[2016]7101) 贵州理工学院高层次人才科研启动经费项目(XJGC20161212)
【分类号】：TG174.4

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