Impact of silica nanoparticles on the morphology and mechanical properties of sol-gel derived coatings
journal contributionposted on 24.04.2019, 14:38 by LV Mora, A Taylor, S Paul, R Dawson, C Wang, W Taleb, J Owen, A Neville, R Barker
Although corrosion resistance and mechanical properties of sol-gel coatings have been studied independently, there are limited studies that consider both collectively. However, since any form of mechanical damage could impair the protective function of the coating, it is prudent to consider the mechanical durability of coatings as well as their corrosion resistance. The present work considers the impact of silica nanoparticles on the morphology and mechanical properties of a sol-gel derived coating. The relationships between the results obtained from tests such as atomic force microscopy (AFM), nanoindentation or erosion test with previously reported corrosion results obtained via salt spray or electrochemical impedance spectroscopy (EIS) are discussed. Results show that reinforcing a sol-gel coating with silica nanoparticles and, particularly, functionalised silica nanoparticles led to coatings with improved mechanical properties and enhanced erosion impact resistance. The role of nanoparticles on improving mechanical properties and corrosion resistance, which is of importance within the coating industry, is discussed.
The author would like to thank the Lloyd's Register Foundation for sponsoring this PhD research and the FCR Team at TWI for their support. [Lloyd's Register Foundation] is a charitable foundation, helping to protect life and property by supporting engineering-related education, public engagement and the application of research.
CitationSurface and Coatings Technology, 2018, 342, pp. 48-56 (9)
Author affiliation/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Engineering
VersionAM (Accepted Manuscript)
Published inSurface and Coatings Technology
Science & TechnologyTechnologyPhysical SciencesMaterials Science, Coatings & FilmsPhysics, AppliedMaterials SciencePhysicsSol-gel coatingsSilica nanoparticlesNanoparticle surface treatmentCorrosion protectionMechanical durabilityRESISTANT POLYMERIC NANOCOMPOSITESINORGANIC HYBRID COATINGSCORROSION PROTECTIONSCRATCH RESISTANCEHARD COATINGSSILANE FILMSCOMPOSITESBEHAVIORSURFACECERIUM