Giovana B. Vitorasso, Maria G. Zacarin, Ivani A. Carlos
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引用次数: 0
Abstract
Ni coatings are widely industrially applied due to their excellent properties like resistance to corrosion and wear, increasing the durability of coated surfaces. Ni electrodeposits on steel were produced from an alternative bath to the traditional Watts type, using aspartic acid as a complexing agent at pH = 5 and 11. Scanning Electron Microscopy micrographs revealed that all deposits obtained from the acid and alkaline baths showed smooth morphology with fine grains and no cracks. The smoothest deposits were obtained at deposition current of − 2.05 mA cm−2 for both baths. The X-ray diffraction patterns of Nickel deposits obtained at pH = 5 and 11 indicated phases of pure Ni with the following reflections Ni(200), Ni (220), Ni (311), and a lower crystallinity for the deposits obtained at pH = 11 compared to that obtained at pH = 5. Adherence tests showed that the Ni coatings produced adhered well to the steel substrate, irrespective of the pH and deposition current density. By open circuit potential and linear polarizations, it was observed that Ni deposits presented a lower corrosion current and more positive corrosion potential than that of steel, indicating protection against corrosion, with those produced with jdep = -2.05 mA cm−2 responsible for the best protection and jdep = -5.00 mA cm−2 (pH = 11) the lowest protection.
期刊介绍：
The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry.
The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces.
The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis.
The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.
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