摘要Ni-P非晶合金薄膜由于在制氢上的电催化活性、特殊的顺磁性、极佳的显微硬度以及良好的耐腐蚀性而成为工业材料极佳的表面涂层。而电沉积是获取Ni-P非晶薄膜较有效的方式,因此近年来受到广泛关注。有研究表面,镀层中高质量比的磷是获得非晶镀层的重要前提之一。同时将非晶颗粒尺寸降至纳米级或许能改善其性能。23553
本文主要通过脉冲电沉积技术制备Ni-P纳米非晶合金薄膜。并研究镀液温度、pH值、亚磷酸含量对镀层中磷含量的影响。通过调控脉冲电沉积参数:开通时间和关断时间,来研究其对镀层磷含量的影响。同时发现,使用脉冲电沉积可以获得比直流电沉积更细小的非晶颗粒,甚至达到纳米级。
关键词 脉冲电沉积 Ni-P合金 纳米非晶 薄膜
毕业设计说明书(毕业论文)外文摘要
Title Research on the synthsis technique of pulse electrodeposition of nanoscale amorphous coatings
Abstract
Ni-P nanometer amorphous film is an excellent industrial materials of surface coatings owing to its electrocatalytic activity in hydrogen production、special paramagnetism 、superb microhardness and high corrosion resistance. While electrodeposition is an effective method to synthesis Ni-P nanometer amorphous film, which acquired more and more attention in the recent years. A lot of studies show that higher phosphorus content is one of the most important factors, which acquire amorphous coatings. Meanwhile, the size of amorphous particles become nanoscale, some properties of Ni-P coatings could be improved.
Ni-P nanometer amorphous coatings are obtained by pulse electrodeposition, and the influences of bath temperature、bath pH and H3PO3 on the phosphorus content of the film were investigated. ON-time and OFF-time, the two pulse plating parameters were also regulated to analysis their impact on the phosphorus content. At the sametime, pulse plating could obtain smaller particles, even nanoscale particles, than direct current electrodeposition.
Keywords pulse plating Ni-P alloy nanoglasses coatings