Corrosion behavior of titanium dioxide (TiO₂)-coated Al alloy in saline environment
dc.contributor.author | Rabbey, Md Fazlay | |
dc.date.accessioned | 2018-12-21T01:02:21Z | |
dc.date.available | 2018-12-21T01:02:21Z | |
dc.date.issued | 2018-08 | |
dc.identifier.uri | http://hdl.handle.net/11122/9717 | |
dc.description | Master's Project (M.S.) University of Alaska Fairbanks, 2018 | en_US |
dc.description.abstract | Al alloys have been used in many applications, however, they are susceptible to corrosion when exposed in saline environment. In this work, TiO₂ nanoellipsoids with aspect ratios (AR) of 1, 2, 4 and 6 were synthesized, TiO₂ coatings of AR 1, AR2, AR4, and AR6 were fabricated on AA2024-T3 Al alloy substrate, and their corrosion behaviors in the saline environment were investigated by analyzing the scanning electron microscope (SEM) imaging, potentiodynamic polarization scans and electrochemical impedance spectroscopy. TiO₂-coated Al samples showed better corrosion performance compared to the bare Al sample. Among the coated samples, TiO₂ AR6 coated samples showed lower corrosion rate compared to other samples. Although TiO₂ nanoellipsoids coatings show good corrosion resistance, it is noted that TiO₂ coatings are porous, which allows the penetration of corrosive media through the pores to reach the surface of the substrate. A polystyrene (PS)-TiO₂ AR6 nanocomposite coating was fabricated, where the pores of the coatings were sealed by polystyrene, which is expected to further improve the corrosion resistance of TiO₂ coatings. | en_US |
dc.language.iso | en_US | en_US |
dc.subject | Titanium dioxide | en_US |
dc.subject | Corrosion | en_US |
dc.subject | Aluminum alloys | en_US |
dc.subject | Prevention | en_US |
dc.title | Corrosion behavior of titanium dioxide (TiO₂)-coated Al alloy in saline environment | en_US |
dc.type | Master's Project | en_US |
dc.type.degree | ms | |
dc.identifier.department | Department of Mechanical Engineering | |
dc.contributor.chair | Zhang, Lei | |
dc.contributor.committee | Zhang, Junqing | |
dc.contributor.committee | Huang, Daisy | |
dc.contributor.committee | Peterson, Rorik | |
refterms.dateFOA | 2020-03-06T01:53:49Z |