Abstract
Al2O3 ceramic coatings with different metallic bonding layers, i.e. Ni60, NiAl and FeAl, were prepared by the plasma spraying technique. To study the effect of bonding layer on corrosion behavior of plasma sprayed Al2O3 coatings, metallic coatings were also prepared for direct use as working layer. Phase analyses of the coatings were determined by X-ray diffraction (XRD). The corrosion behavior of the coated samples was evaluated by potentiodynamic polarization tests in simulated seawater. The results showed that Ni60 could make Al2O3 coating attain the best corrosion resistance amongst the three metallic bonding layers. The corrosion resistance of Al2O3 coatings first increased and then decreased with the increased Ni60 bonding layer thickness. Conclusively, it is found that chemical composition and thickness of bonding layers played an important role in the corrosion behavior of the plasma sprayed Al2O3 coatings.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
