Fabrication of a bulk material composed of nano-sized layers accumulated by electro-deposition

为了制备一种由纳米层组成的块体材料作为一种新型的纳米材料，采用了电沉积（电镀）工艺。开发了一种设备，通过交替浸入不同的溶液中存款不同的金属层，如铜和镍，以累积100多个层。利用TEM和SEM对样品的微观结构进行了研究，发现各层之间是相互结合的。在层中发现许多晶界和孪晶界，这可能导致元素的快速扩散。

In order to fabricate a bulk material composed of nano-sized layers as a new kind of nano-materials, electro-depositing (plating) process is used. An equipment is developed to accumulate more than 100 layers by immersing into different solutions alternately to deposit different metallic layers such as copper and nickel. TEM and SEM are mainly used to investigate the microstructure of samples, and it was found that the layers are coherent each other. Many grain boundaries and twin boundaries are found in the layers, which may cause a fast diffusion of elements.