Abstract
The work herein describes the effect of the dispersion of ZrC and TiNi nanostructures, produced by mechanosynthesis, on the anticorrosion and tribological properties of epoxy resin (ER) coatings. Electrochemical impedance spectroscopy (EIS) showed that the addition of the nanostructured materials in the polymer matrix improved by three to four orders of magnitude the corrosion resistance of a pristine epoxy resin coated steel exposed to a 3.5 wt% NaCl solution. The chemical and nanocrystalline nature as well as the particle size of the reinforcements played an important role in the penetration of aggressive agents and corrosion of the steel. Interestingly, TiNi promoted a corrosion inhibiting effect through the deposition of its cations on the steel surface. On the other hand, scratch tests as well as electron and atomic force microscopy analysis revealed that the particle size of the reinforcements was a dominant effect on the scratch resistance of the nanocomposite coatings due to the modification of the surface roughness as well as the stress distribution during the scratch tests. The scratch resistance of the pristine epoxy resin was higher than that of the TiNi powder nanocomposite, but lower than that of the ZrC coating. In addition, ZrC promoted a lubricating effect during the scratch test. Up to ∼20 wt% of TiNi shape memory phase in TiNi reinforcement did not provide evident enhancement of the coatings scratch resistance.
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.
