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Self-Assembled Films for Improved Corrosion Resistance

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A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Corrosion".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 9322

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Special Issue Editors

Prof. Dr. Helena Otmačić Ćurković

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Guest Editor

Faculty of Chemical Engineering and Technology, University of Zagreb, Marulicev trg 19, 10000 Zagreb, Croatia
Interests: corrosion mechanisms; corrosion inhibitors; self-assembled films; protective coatings; electrochemical techniques
Special Issues, Collections and Topics in MDPI journals

Dr. Saman Hosseinpour

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Guest Editor

Institute of Particle Technology (LFG), Friedrich-Alexander University Erlangen-Nuremberg, Cauerstraße 4, D-91058 Erlangen, Germany
Interests: corrosion; self-assembled films; corrosion inhibitors; coatings; laser spectroscopy; electrochemistry; local probe techniques
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Corrosion processes lead to deterioration of metallic structures, which can result in both significant financial losses as well as in endangerment of human lives and environment. For this reason, various corrosion protection methods are applied in practice to prolong the lifetime of metallic structures. Recently, self-assembled films of organic compounds have found their application in many fields, including corrosion protection. Self-assembled films can form by spontaneous adsorption of amphiphilic molecules such as alkanethiols, carboxylic and phosphonic acids or silanes. Mainly, self-assembled monolayers are formed in this way. Self-assembly results in formation of highly ordered structures that can act as a barrier to diffusion of corrosive species, thus preventing or retarding corrosion processes. Nevertheless, the protective properties of such coatings strongly depend on the properties of underlying substrate, film formation conditions, as well on the properties of the applied amphiphilic molecules. Therefore, unravelling of the effect of these parameters on the protective properties of self-assembled films by various experimental techniques is of significant importance.

It is our pleasure to invite you to submit a manuscript on “Application and Characterization of Self-Assembled Films in Corrosion Protection” for this Special Issue. Both original scientific papers and reviews are welcome.

Prof. Dr. Helena Otmačić Ćurković
Dr. Saman Hosseinpour
Guest Editors

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Keywords

self-assembled monolayers (SAMs)
self-assembled multilayers
corrosion protection
electrochemical characterization
spectroscopic characterization
local probe characterization

Published Papers (3 papers)

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Research

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14 pages, 2491 KiB

Open AccessArticle

Effect of Substrate Grain Size on Structural and Corrosion Properties of Electrodeposited Nickel Layer Protected with Self-Assembled Film of Stearic Acid

by Amir Hossein Noorbakhsh Nezhad, Ehsan Rahimi, Reza Arefinia, Ali Davoodi and Saman Hosseinpour

Materials 2020, 13(9), 2052; https://doi.org/10.3390/ma13092052 - 28 Apr 2020

Cited by 14 | Viewed by 2228

Abstract

In the present study, the impact of copper substrate grain size on the structure of the succeeding electrodeposited nickel film and its consequent corrosion resistance in 3.5% NaCl medium were evaluated before and after functionalization with stearic acid. Nickel layers were electrodeposited on two different copper sheets with average grain size of 12 and 25 µm, followed by deposition of stearic acid film through self-assembly. X-ray diffraction analysis of the electrodeposited nickel films revealed that the deposition of nickel film on the Cu substrate with small (12 µm) and large (25 µm) grains is predominantly governed by growth in the (220) and (111) planes, respectively. Both electrodeposited films initially exhibited a hydrophilic nature, with water-contact angles of 56° and <10°, respectively. After functionalization with stearic acid, superhydrophobic films with contact angles of ~150° were obtained on both samples. In a 3.5% NaCl medium, the corrosion resistance of the nickel layer electrodeposited on the copper substrate with 25 µm grains was three times greater than that deposited on the copper substrate with 12 µm grains. After functionalization, the corrosion resistance of both films was greatly improved in both short and long immersion times in 3.5% NaCl medium. Full article

(This article belongs to the Special Issue Self-Assembled Films for Improved Corrosion Resistance)

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14 pages, 4521 KiB

Open AccessArticle

Preparation and Photocathodic Protection Properties of ZnO/TiO₂ Heterojunction Film Under Simulated Solar Light

by Xiong Zhang, Guanghui Chen, Weihua Li and Dianwu Wu

Materials 2019, 12(23), 3856; https://doi.org/10.3390/ma12233856 - 22 Nov 2019

Cited by 12 | Viewed by 2638

Abstract

In this work, a novel double layer made of ZnO nanorod arrays and TiO₂ nanorod arrays with anticorrosion function were successfully prepared on fluorine-doped tin oxide (FTO) substrate by a simple low-temperature solvothermal method. As compared with the pure TiO₂ and pure ZnO film, the combination of the two films presented higher photocathodic protection performance for 316 stainless steel (316 SS) and Q235 carbon steel in 3.5 wt% NaCl solution. The composite film with ZnO nanoparticles layer between ZnO nanorod arrays and TiO₂ nanorod arrays exhibited the best photocathodic performance, which lowered the open circuit potential (OCP) of 316 SS and Q235 to −991 mV, −1066 mV, respectively. The results demonstrated that the formation of the uniform heterojunction film and the small difference in band alignment played important roles in the promotion of photocathodic protection performance. Full article

(This article belongs to the Special Issue Self-Assembled Films for Improved Corrosion Resistance)

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Review

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25 pages, 3063 KiB

Open AccessFeature PaperReview

Formation of Self-Assembled Anticorrosion Films on Different Metals

by Judit Telegdi

Materials 2020, 13(22), 5089; https://doi.org/10.3390/ma13225089 - 11 Nov 2020

Cited by 25 | Viewed by 3793

Abstract

The review will first discuss shortly the phenomenon of corrosion and enroll some general possibilities to decrease the rate of this deterioration. The stress will be laid upon the presentation of anticorrosive self-assembled molecular (SAM) layers as well as on the preparation technology that is a simple technique, does not need any special device, and can be applied on different solids (metals or non-metals) alone or in combination. The paper groups the chemicals (mainly amphiphiles) that can develop nanolayers on different pure or oxidized metal surfaces. The history of the self-assembled molecular layer will be discussed from the beginning of the first application up to now. Not only the conditions of the nanofilm preparation as well as their characterization will be discussed, but the methods that can evaluate the corrosion-inhibiting efficiency of the SAM layers under a corrosive environment will be demonstrated as well. Full article

(This article belongs to the Special Issue Self-Assembled Films for Improved Corrosion Resistance)

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