Ni-W alloy coatings deposited from a citrate electrolyte
-
Matilda Zemanová
,
Robert Kurinec
Abstract
Ni-W alloy coatings were deposited by applying current pulses with different pulse parameters at 60°C onto mild steel substrates from aqueous electrolytes with different tungstate concentration. Morphology and composition of the alloys were analyzed by SEM and EDX, respectively. XRD was used to determine metallic phases. Scanning electron micrographs revealed that deposition parameters had a strong effect on the morphology of the coatings. Increasing the duty cycle or decreasing the off time led to a compact morphology. Corrosion properties of the coatings were investigated by potentiodynamic polarization in a chloride medium. It was found that compact morphology of the deposits and high content of tungsten in the coating contribute to satisfactory corrosion results of Ni-W alloy coatings under the conditions studied.
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© 2011 Institute of Chemistry, Slovak Academy of Sciences
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Articles in the same Issue
- Ultrathin organic, inorganic, hybrid, and living cell coatings — Topical Issue
- Functional polymer thin films designed for antifouling materials and biosensors
- In-situ polymerized molecularly imprinted polymeric thin films used as sensing layers in surface plasmon resonance sensors: Mini-review focused on 2010–2011
- Design of polyglycidol-containing microspheres for biomedical applications
- On the interfacial chemistry of aryl diazonium compounds in polymer science
- Polypyrrole coating of inorganic and organic materials by chemical oxidative polymerisation
- Spectroscopy of thin polyaniline films deposited during chemical oxidation of aniline
- Ultrathin functional films of titanium(IV) oxide
- Sol-gel thin films with anti-reflective and self-cleaning properties
- Nanostructured electrocatalysts immobilised on electrode surfaces and organic film templates
- Influence of adsorbed oxygen on charge transport and chlorine gas-sensing characteristics of thin cobalt phthalocyanine films
- Ni-W alloy coatings deposited from a citrate electrolyte
- Role of reactive species in processing materials at laboratory temperature by spray plasma devices
- Electrodeposition of hafnium and hafnium-based coatings in molten salts
- Role of interfacial chemistry on the rheology and thermo-mechanical properties of clay-polymer nanocomposites for building applications
- Endothelial cell adhesion on polyelectrolyte multilayer films functionalised with fibronectin and collagen
