Crystal growth and contral of nano-level zinc alloy electrodeposits

研究了二氧化钛、二氧化硅和链状二氧化硅颗粒的原子级复合电沉积。1.二氧化硅与二氧化硅的结合机理；作者研究了锌电极沉积者在(0 0 1)η上的宏观台阶横向生长。研究了5 0 nm二氧化硅颗粒在锌电极(0 0 1)η上的掺杂机理。二氧化硅颗粒在(00 L)η上为随机沉淀，在宏观台阶边缘为有序沉淀。在初始吸收位置，随机沉淀以单原子高度的台阶从其底部被捕获。宏观台阶边缘的有序析出物从宏观台阶的侧壁被捕获。此外，我们还在断口观察到了电沉积层内部的大量二氧化硅颗粒。2.二氧化钛与二氧化钛的结合机理：二氧化钛颗粒由直径10 nm的小颗粒和50 nm大的颗粒组成。5 0 nm大颗粒在(0 0 1)η上有随机沉淀，在宏观台阶边缘有有序沉淀。10 nm的小颗粒在(00 1)η上随机析出。这些较小的粒子在它们最初被吸收的地方被单原子高度的台阶从它们的底部捕获。在电沉积初期，只有较小的颗粒被捕获。3.讨论了链状二氧化硅颗粒的嵌入机理，多个二氧化硅颗粒形成链状二氧化硅颗粒的机理。链状颗粒在(0 0 1)η面上可分为随机析出相和宏观台阶边缘有序析出相。无规链状预吸附体在其初始吸收位置通过单原子高度的台阶从其底部被捕获。宏观台阶边缘的有序链状析出物从宏观台阶的侧壁被捕获。此外，我们还观察到链状颗粒随机附着在(100)η上。

Atomic level composite electrodeposition has been investigated with Titania, Silica and chained Silica particles.1.Incorporation mechanism with Silica ; The author has been investigated the macrostep lateral growth on (00 1)η of zinc electrodepoists. In this investigation, an incorporation mechanism of Silica particles of 50nm on (00 1)η of zinc electrodepoistsis is reported. Silica particles can be classified with random precipitates on the (00 l)η and ordered precipitates at the macrostep edge. The random precipitates are trapped form their bottom by single atomic height steps at the initial absorbed sites. The ordered precipitates at the macrostep edges are trapped from sidewall of macrosteps. Also, we observed many Silica particles on fractured surfaces which are inside of the electrodeposits.2.Incorporation mechanism with Titania ; The titania particles consist of 10nm diameter smaller particles and 50nm larger particles. 50nm larger particles can be classified with random precipitates on the (00 1)η and ordered precipitates at the macrostep edge. 10nm smaller particles randomly precipitates on the (00 1)η. These smaller particles are trapped form their bottom by the single atomic height steps at their initial absorbed sites. At the initial stage of electrodeposition, only smaller particles are trapped.3.Incorporation mechanism with chained Silica particles ; Incorporation mechanism of chained Silica particles, multiple Silica particle forming chain, is discussed. The chained particles can be classified with random precipitates on the (00 1)η and ordered precipitates at the macrostep edge. The random chained preoipitates are trapped form their bottom by the single atomic height steps at their initial absorbed sites. The ordered chained precipitates at the macrostep edges are trapped from sidewall of macrosteps. Also, we observed chained particles randomly sticking on the (10 0)η.