Patterning SS304 Surface at Microscale to ...
Document type :
Article dans une revue scientifique: Article original
DOI :
Permalink :
Title :
Patterning SS304 Surface at Microscale to Reduce Wettability and Corrosion in Saline Water
Author(s) :
Annakodi, Vivek Anand [Auteur]
Indian Institute of Technology [Hyderabad] [IIT Hyderabad]
Arvind Singh, Ramachandra [Auteur]
Wenzhou University
Jayalakshmi, Subramanian [Auteur]
Wenzhou University
Zhang, Yupeng [Auteur]
Xiamen University
Anaz Khan, Muhammed [Auteur]
Indian Institute of Technology [Hyderabad] [IIT Hyderabad]
Srinivas Rao, Koppula [Auteur]
Indian Institute of Technology [Hyderabad] [IIT Hyderabad]
Shabadi, Rajashekhara [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Indian Institute of Technology [Hyderabad] [IIT Hyderabad]
Arvind Singh, Ramachandra [Auteur]
Wenzhou University
Jayalakshmi, Subramanian [Auteur]
Wenzhou University
Zhang, Yupeng [Auteur]
Xiamen University
Anaz Khan, Muhammed [Auteur]
Indian Institute of Technology [Hyderabad] [IIT Hyderabad]
Srinivas Rao, Koppula [Auteur]
Indian Institute of Technology [Hyderabad] [IIT Hyderabad]
Shabadi, Rajashekhara [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Journal title :
Metals
Volume number :
12
Pages :
1137
Publisher :
MDPI
Publication date :
2022-07-03
ISSN :
2075-4701
English keyword(s) :
304 stainless steel
micropillars
wettability
corrosion
saline water
micropillars
wettability
corrosion
saline water
HAL domain(s) :
Chimie/Matériaux
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
English abstract : [en]
Stainless steel 304 (SS304) experiences corrosion when it is exposed to a saline atmosphere, which attains severity due to its high surface wettability. Topographical modification of metallic surfaces is an effective route ...
Show more >Stainless steel 304 (SS304) experiences corrosion when it is exposed to a saline atmosphere, which attains severity due to its high surface wettability. Topographical modification of metallic surfaces is an effective route to reduce wettability and thereby mitigate liquid-mediated corrosion. In this work, topographical modification of stainless steel 304 flat surface in the form of micropillars was done (pillar width: 100 μm, inter-pillar distance: 100 μm and height: 80 μm). Micropillars were fabricated by a chemical etching process. Wetting and corrosion of the micropillars was studied over long-time duration in comparison with flat surface, before and after intermittent and continuous exposures to saline water for 168 h. Wetting was characterized by measuring the static water contact angle on the test surfaces and their corrosion by electrochemical polarization tests (electrolyte: 3.5 wt.% sodium chloride solution). The relationship between the nature of wetting of the test surfaces and their corrosion was examined. Micropillars showed predominantly composite wetting over a long time, which imparted an effective resistance against corrosion over a long time to the SS304 surface. When compared to the flat surface, the corrosion rates of the micropillars were lower by two orders of magnitude, prior to and also upon long-time contact with the NaCl solution. Micropillars lowered corrosion due to composite wetting, i.e., solid-liquid-air interface that reduced the area that was in contact with the NaCl solution. The efficiency of corrosion inhibition (η) of micropillars was 88% before long-time contact, 84% after intermittent contact, and 77% after continuous contact with NaCl solution. Topographical modification in the form of micropillars that can impart composite wetting is an effective route to induce long-term anticorrosion ability to the SS304 surface.Show less >
Show more >Stainless steel 304 (SS304) experiences corrosion when it is exposed to a saline atmosphere, which attains severity due to its high surface wettability. Topographical modification of metallic surfaces is an effective route to reduce wettability and thereby mitigate liquid-mediated corrosion. In this work, topographical modification of stainless steel 304 flat surface in the form of micropillars was done (pillar width: 100 μm, inter-pillar distance: 100 μm and height: 80 μm). Micropillars were fabricated by a chemical etching process. Wetting and corrosion of the micropillars was studied over long-time duration in comparison with flat surface, before and after intermittent and continuous exposures to saline water for 168 h. Wetting was characterized by measuring the static water contact angle on the test surfaces and their corrosion by electrochemical polarization tests (electrolyte: 3.5 wt.% sodium chloride solution). The relationship between the nature of wetting of the test surfaces and their corrosion was examined. Micropillars showed predominantly composite wetting over a long time, which imparted an effective resistance against corrosion over a long time to the SS304 surface. When compared to the flat surface, the corrosion rates of the micropillars were lower by two orders of magnitude, prior to and also upon long-time contact with the NaCl solution. Micropillars lowered corrosion due to composite wetting, i.e., solid-liquid-air interface that reduced the area that was in contact with the NaCl solution. The efficiency of corrosion inhibition (η) of micropillars was 88% before long-time contact, 84% after intermittent contact, and 77% after continuous contact with NaCl solution. Topographical modification in the form of micropillars that can impart composite wetting is an effective route to induce long-term anticorrosion ability to the SS304 surface.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
CNRS
INRAE
ENSCL
CNRS
INRAE
ENSCL
Collections :
Research team(s) :
Métallurgie Physique et Génie des Matériaux
Submission date :
2024-01-15T14:29:14Z
2024-01-31T16:30:35Z
2024-01-31T16:30:35Z
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