纳米TiC浓度对双脉冲电沉积Ni-TiC复合镀层结构及性能的影响
Effect of nano-TiC concentration on structure and properties of Ni-TiC composite coatings prepared by double pulse electrodeposition
任鑫 1王港 1孙涛 1吴双全 2霍欢 1王浩雨1
作者信息
- 1. 辽宁工程技术大学材料科学与工程学院,辽宁阜新 123000
- 2. 马鞍山学院腾讯云大数据学院,安徽马鞍山 243100
- 折叠
摘要
研究了镀液中纳米TiC的添加量对双脉冲电沉积Ni-TiC复合镀层结构及性能的影响.通过扫描电镜(SEM)和X射线衍射(XRD)对镀层的表面形貌和物相进行了表征,并研究了镀层的表面粗糙度、显微硬度、耐磨性能和耐腐蚀性能.结果表明:当镀液中TiC浓度较低时,复合镀层表现为类似于纯Ni镀层的胞状沉积结构.当镀液中TiC浓度较高时,复合镀层表现为菜花状沉积结构.当纳米TiC浓度为8 g/L时,镀层表面致密性相对较高,Ni的衍射峰有明显的宽化现象.随着镀液中纳米TiC浓度的升高,复合镀层的磨损质量损失比表现为先下降后上升的趋势,当TiC浓度为8 g/L时,磨损质量损失比最小,为5.436％.当镀液中纳米TiC浓度为8 g/L时,镀层的自腐蚀电流密度最小,极化电阻值最大.结果表明双向脉冲电沉积制备Ni-TiC复合镀层镀液中最佳纳米TiC浓度为8 g/L.
Abstract
Effect of nano-TiC concentration in the plating solution on structure and properties of double pulse electrodeposited Ni-TiC composite coatings was studied.Surface morphology and phase of the composite coatings were characterized by scanning electron microscopy(SEM)and X-ray diffraction(XRD),and the surface roughness,microhardness,wear resistance and corrosion resistance of the coatings were studied.The results show that when the concentration of nano-TiC in the plating solution is low,the composite coatings exhibit a cellular deposition structure similar to that of pure Ni coating.When the concentration of nano-TiC in the plating solution is high,the composite coatings exhibit a cauliflower like deposition structure.When the concentration of nano-TiC is 8 g/L,the surface density of the coating is relatively high,and the diffraction peak of Ni shows a significant broadening phenomenon.With the increase of nano-TiC concentration in the plating solution,the wear mass loss ratio of the composite coatings shows a trend of first decreasing and then increasing.When the nano-TiC concentration is 8 g/L,the wear mass loss ratio is the smallest,which is 5.436％.When the concentration of nano-TiC in the plating solution is 8 g/L,the self corrosion current density of the coating is the lowest and the polarization resistance value is the highest.The results show that the optimal concentration of nano-TiC in the plating solution for preparing Ni-TiC composite coating by double pulse electrodeposition is 8 g/L.
关键词
双向脉冲电沉积/纳米TiC/镍基复合镀层/微观结构/性能Key words
double pulse electrodeposition/nano-TiC/nickel base composite coating/microstructure/property引用本文复制引用
基金项目
辽宁省教育厅基本科研项目(2023)(JYTMS20230790)
出版年
2024
NETL
NSTL
万方数据