Synthesis and Performance Evaluation of Pulse Electrodeposited Ni-AlN Nanocomposite Coatings
| Autor: | Moinuddin M. Yusuf, Paul C. Okonkwo, Rana Abdul Shakoor, Ramazan Kahraman, Kamran Ali, Sivaprasad Narayana, Abdullah Alashraf |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Morphology (linguistics) Materials science Nanocomposite lcsh:QH201-278.5 Article Subject Nanoparticle chemistry.chemical_element 02 engineering and technology Nanoindentation 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Atomic and Molecular Physics and Optics Corrosion Matrix (chemical analysis) Nickel chemistry 0103 physical sciences Composite material lcsh:Microscopy 0210 nano-technology Instrumentation Research Article |
| Zdroj: | Scanning Scanning, Vol 2018 (2018) |
| ISSN: | 1932-8745 0161-0457 |
| Popis: | This research work presents the microscopic analysis of pulse electrodeposited Ni-AlN nanocomposite coatings using SEM and AFM techniques and their performance evaluation (mechanical and electrochemical) by employing nanoindentation and electrochemical methods. The Ni-AlN nanocomposite coatings were developed by pulse electrodeposition. The nickel matrix was reinforced with various amounts of AlN nanoparticles (3, 6, and 9 g/L) to develop Ni-AlN nanocomposite coatings. The effect of reinforcement concentration on structure, surface morphology, and mechanical and anticorrosion properties was studied. SEM and AFM analyses indicate that Ni-AlN nanocomposite coatings have dense, homogenous, and well-defined pyramid structure containing uniformly distributed AlN particles. A decent improvement in the corrosion protection performance is also observed by the addition of AlN particles to the nickel matrix. Corrosion current was reduced from 2.15 to 1.29 μA cm−2 by increasing the AlN particles concentration from 3 to 9 g/L. It has been observed that the properties of Ni-AlN nanocomposite coating are sensitive to the concentration of AlN nanoparticles used as reinforcement. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text