论文部分内容阅读
用XRD和SEM等方法对不同镍离子浓度下电沉积镍的组织结构进行了表征。结果表明:电解液中镍离子浓度在50~90 g/L内,其浓度增大,电沉积镍的织构由(200)面转变为(111)面,晶粒尺寸呈减小趋势。当镍离子浓度在90 g/L时,镍沉积层的晶粒尺寸最小,约为40 nm。不同镍离子浓度下电沉积镍的晶面间距d、晶胞常数a等结构参数相差不大,镍离子浓度为70 g/L时,其晶格畸变和压应力最大。镍离子浓度较低时,电沉积镍微观表面不均匀,局部出现结晶粗大、晶粒大小不一致的现象。镍离子浓度增加,大尺寸晶粒团簇逐渐减少,晶粒团簇的均匀性得到改善。
The structure of Ni electrodeposited by different concentrations of nickel ions was characterized by XRD and SEM. The results show that the concentration of nickel ions in the electrolyte increases from 50 to 90 g / L, and the texture of nickel electrodeposits changes from (200) to (111), and the grain size decreases. When the nickel ion concentration is 90 g / L, the grain size of nickel deposit is the smallest, about 40 nm. Under different concentrations of nickel ions, the interplanar spacing d and the unit cell constant a of nickel electrodeposited are not different. When the nickel ion concentration is 70 g / L, the lattice distortion and compressive stress are the largest. When the nickel ion concentration is low, the microscopic surface of electrodeposited nickel is inhomogeneous, and the local phenomenon of coarse crystal and inconsistent grain size appears. The nickel ion concentration increases, the size of large-size grains decreases and the uniformity of the grains improves.