Abstract
Composite coating was prepared on magnesium alloy AZ31B through different hyamine intercalated montmorillonite (MMT) doping in glycidoxypropyltrimethoxysilane (GPTMS) and tetraethoxysilane (TEOS) hydrolyzed hybrid sol-gel system. Corrosion behaviors of different coated samples were investigated using potentiodynamic polarization. The results indicated an improvement of protective performance when modified MMT doped in, and the CC-MMT doped sol-gel coating showed better corrosion resistance than the CTA-MMT doped one. Combining the MMT characterization and structure of the coating, it could be concluded that this difference came from the tough bonding between CC-MMT and sol-gel system, while that did not exist in CTA-MMT/sol-gel coating. Due to this tough bonding, CC-MMT could guide the assembly of hydrolyzed silane molecules and silica sol particles, thus a denser structure and better protection performance.
Sign-in/Register to access full text options 
Free) 
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 call
