Effect of molecular-scale surface energy alteration of aluminium on its corrosion resistance behaviour
- Publisher:
- ELSEVIER SCIENCE BV
- Publication Type:
- Journal Article
- Citation:
- Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2019, 562, pp. 26-33
- Issue Date:
- 2019-02-05
Closed Access
Filename | Description | Size | |||
---|---|---|---|---|---|
Effect of molecular-scale surface energy alteration of aluminium on its corrosion resistance behaviour.pdf | Published version | 5.66 MB |
Copyright Clearance Process
- Recently Added
- In Progress
- Closed Access
This item is closed access and not available.
The degree of available energy on a surface determines how a surface interacts with its surrounding environment such as corrosion. Current approaches to protection of Aluminum surfaces from corrosion mainly focus on adding an organic or inorganic layer to either act as a barrier from oxidant or scarifying to inhibit the corrosion. Altering the surface energy of Al on a molecular level is another alternative approach to efficiently modify the Al surface without the need for another thick expensive protective or scarifying materials. Herein, an attempt was made to understand how a molecular scale energy alteration improves the anticorrosion behavior of an aluminum surface. Two different surface engineering alteration strategies have been discussed; termed ALOSH and ALTSH modification. A variety of analytical instruments, i.e., FTIR, EDAX, XPS, SEM, AFM, WCA, and SFE measurement were used to systematically characterize the samples. Electrochemical impedance spectroscopy revealed that there are different resistances after the surface modifications. The trapping air resistance appeared in ALTSH is approximately 2.4 and 36 times higher than that of ALOSH and bare samples, respectively. The potentiostat analysis results showed that the mili inch per year value of coating for ALTSH was 0.012 while that of ALOSH was 0.507. It was also found that the low surface energy alteration without using inert molecules is not enough to render corrosion inhibition property, as it needs to have a protective energy barrier with no or minimal active electrochemical behavior.
Please use this identifier to cite or link to this item: