Effect of molecular-scale surface energy alteration of aluminium on its corrosion resistance behaviour

Moazzam, P; Luciano, G; Razmjou, A; Akbari, E; Ul'yanov, PG; Mahanty, S

Effect of molecular-scale surface energy alteration of aluminium on its corrosion resistance behaviour

Moazzam, P Luciano, G Razmjou, A Akbari, E Ul'yanov, PG Mahanty, S

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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

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Field	Value	Language
dc.contributor.author	Moazzam, P
dc.contributor.author	Luciano, G
dc.contributor.author	Razmjou, A
dc.contributor.author	Akbari, E
dc.contributor.author	Ul'yanov, PG
dc.contributor.author	Mahanty, S
dc.date.accessioned	2023-03-26T23:18:26Z
dc.date.available	2023-03-26T23:18:26Z
dc.date.issued	2019-02-05
dc.identifier.citation	Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2019, 562, pp. 26-33
dc.identifier.issn	0927-7757
dc.identifier.issn	1873-4359
dc.identifier.uri	http://hdl.handle.net/10453/168464
dc.description.abstract	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.
dc.language	English
dc.publisher	ELSEVIER SCIENCE BV
dc.relation.ispartof	Colloids and Surfaces A: Physicochemical and Engineering Aspects
dc.relation.isbasedon	10.1016/j.colsurfa.2018.10.046
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	02 Physical Sciences, 03 Chemical Sciences, 09 Engineering
dc.subject.classification	Chemical Physics
dc.title	Effect of molecular-scale surface energy alteration of aluminium on its corrosion resistance behaviour
dc.type	Journal Article
utslib.citation.volume	562
utslib.for	02 Physical Sciences
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2023-03-26T23:18:25Z
pubs.publication-status	Published
pubs.volume	562

Abstract:

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.

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http://hdl.handle.net/10453/168464