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Journal of Engineering and Applied Sciences
Year: 2018 | Volume: 13 | Issue: 5 | Page No.: 1201-1209
DOI: 10.36478/jeasci.2018.1201.1209  
Effects of Natural Rock and Nano-TiO2 Additives on Al2 O3 Layer Deposited on Al Alloys by Micro-Arc Oxidation (MAO)
Farqad Saleem Murad , Samir Hamid Awad and Elham Abdalmajeed
 
Abstract: Ceramic coatings on Al alloys were prepared via. micro arc oxidation process using natural rock (10 g/L fired and unfired porcelanite) and (2.4 g/L) nano-TiO2 additives. The phase composition, microstructure (SEM and EDX), micro hardness, thickness, roughness and wear resistance of the coatings were studied. The results showed that the thick and hard (γ-Al2 O3 ceramic coatings can be deposited by MAO process on Al alloys using electrolytes contained fired porcelanite with modified tribological properties and less porosity and its non-uniform distribution in the structure. The addition of nano-TiO2 recorded the highest hardness and reduced the pore size and tunnels in coatings structure.
 
How to cite this article:
Farqad Saleem Murad, Samir Hamid Awad and Elham Abdalmajeed, 2018. Effects of Natural Rock and Nano-TiO2 Additives on Al2 O3 Layer Deposited on Al Alloys by Micro-Arc Oxidation (MAO). Journal of Engineering and Applied Sciences, 13: 1201-1209.
DOI: 10.36478/jeasci.2018.1201.1209
URL: http://medwelljournals.com/abstract/?doi=jeasci.2018.1201.1209