Abstract
AbstractWatt's baths containing different amounts of Al powder were used to electroplate the pure Ni and Ni–Al composite coatings. Surface morphology, microstructure of the samples and particle distribution in the coatings were studied using optical microscope, SEM, EDX and XRD. The results showed that the electroplated sample in the bath containing 40 g.L−1 Al has the maximum particle and the best particle distribution. Evaluation of microstructures demonstrated that Al particles change the microstructure of Ni from coarse‐columnar to fine‐granular structure due to providing new nucleation sites and stopping columnar growth of Ni grains. Corrosion measurements revealed that Ni‐Al coatings have lower corrosion resistance than pure Ni probably due to formation of active‐passive cells and weak bandings between Al particles and Ni substrate.
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.
