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Microstructure of Ni/Al2O3 Electrodeposited Coatings Studied with XRD and SEM Techniques

Our interests are focused on the Ni/Al2O3 nanocomposite coatings electrochemically deposited in modified Watt’s-type baths into which α-Al2O3 nanopowder is added on steel substrates. The effect of different amounts of α-Al2O3 phase in the electrolyte baths on microstructure of electrodeposited Ni/Al2O3 coatings is investigated. In order to study the coatings the non-destructive X-ray diffraction techniques are applied. As indirect techniques, they are supported by imaging methods, especially scanning electron microscopy.