Corrosion protection provided by trivalent chromium process conversion coatings on aluminum alloys
This dissertation focuses on a fundamental understanding of the formation mechanism, chemical structure, and basic electrochemical properties of the TCP coating on three high strength aluminum alloys: AA2024-T3, AA6061-T6, and AA7075-T6. The formation of the TCP coating is driven by an increase in the interfacial pH. The coating is about 50-100 nm thick and has a biphasic structure consisting of a ZrO 2 /Cr(OH)3 top layer and an AlF63- /Al(OH)3 interfacial layer. The coating contains hydrated channels and or defects. -- Abstract.
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- In Collections
-
Electronic Theses & Dissertations
- Copyright Status
- In Copyright
- Material Type
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Theses
- Authors
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Li, Liangliang
- Thesis Advisors
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Swain, Greg M.
- Committee Members
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Barton, Scott C.
Drzal, Lawrence
Lee, Andre
- Date Published
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2013
- Subjects
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Materials science
Chemistry, Inorganic
Chemical engineering
Aluminum alloys--Research
Corrosion resistant alloys
Evaluation
Chromium alloys
Research
- Program of Study
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Chemical Engineering - Doctor of Philosophy
- Degree Level
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Doctoral
- Language
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English
- Pages
- xxi, 239 pages
- ISBN
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9781303630965
1303630966
- Permalink
- https://doi.org/doi:10.25335/4ksv-5156