About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Advanced Materials for Harsh Environments
|
| Presentation Title |
Corrosion Propensity of Polyester-Chromium Nitrate Coated Al7xxx in a Humid Environment |
| Author(s) |
Joseph Babalola Agboola, Olatunde Israel Sekunowo, chiamaka Uzuegbu |
| On-Site Speaker (Planned) |
Joseph Babalola Agboola |
| Abstract Scope |
The present work aims to evaluate chromium nitrate's effect on corrosion resistance of Polyester-Chromium Nitrate composite coated Al7xxx alloy in a humid environment. Polyester (PE) was synthesized by condensation, polymerizing symmetrical 1,3,4-oxadiazole and pimelic acid using sodium lauryl sulfate as a surfactant. Polyester-chromium nitrate composite was prepared by ultrasonication method. The prepared composite was applied on the surface of Al7xxx through the dipping method and cured at room temperature for 24 hours. Scanning electron microscopy (SEM/EDS) and X-ray Diffractometry (XRD) were carried out to compare the surface structure and the morphology of the coating. The results of the electrochemical measurement showed that Polyester chromium nitrate coated samples had a longer controlled sacrificial anodic protection on Al7xxx substrate, a lower corrosion current density ( 〖i 〗_corr) and a higher corrosion potential (e_corr). The 60/40% composite-coated sample exhibited better corrosion resistance compared with the uncoated and pure polyester-coated samples. |