Microstructure and performance of electrodeposited nanocrystalline Ni-W alloys
来源期刊：中国有色金属学报(英文版)2005年第z3期
论文作者：任榕 吴玉程 舒霞 史成武 李云 郑玉春
文章页码：198 - 202
Key words：electro-deposition； nanocrystalline Ni-W alloy； surface morphology； micro-hardness； corrosion resistance
Abstract: The electro-deposition method was used for preparation of nanocrystalline Ni-W alloys coating. The formation, microstructure and performance of the nanocrystalline were investigated. X-ray diffraction results show that Ni-W alloys are crystallized in scale of 1730nm. Changing with the depositional time, the coating varies with different surface morphology. The observation on the formation of the coating implies that, the alloys preferentially deposit and grow on the scratch and corrosion pit edges. The hardness of the alloy coatings is related to the solution composition, pH value and current density, and the pH value and current density are mainly concerned. The corrosion resistance of Ni-W alloy coating is excellent compared with that of Cr and Ni coatings.
