Anticorrosion Behaviour of SS304 Microgroove Surfaces in Saline Water

Annakodi, Vivek Anand; Arvind Singh, Ramachandra; Jayalakshmi, Subramanian; Zhang, Yupeng; Srinivas Rao, Koppula; Shabadi, Rajashekhara

Document type :

Article dans une revue scientifique

DOI :

10.3390/met11101543

Permalink :

http://hdl.handle.net/20.500.12210/101665

Title :

Anticorrosion Behaviour of SS304 Microgroove Surfaces in Saline Water

Author(s) :

Annakodi, Vivek Anand [Auteur]
Indian Institute of Technology [Hyderabad] [IIT Hyderabad]
Arvind Singh, Ramachandra [Auteur]
Wenzhou Medical University [Wenzhou, China] [WMU]
Jayalakshmi, Subramanian [Auteur]
Wenzhou Medical University [Wenzhou, China] [WMU]
Zhang, Yupeng [Auteur]
Wenzhou Medical University [Wenzhou, China] [WMU]
Srinivas Rao, Koppula [Auteur]
Wenzhou Medical University [Wenzhou, China] [WMU]
Shabadi, Rajashekhara [Auteur]

Unité Matériaux et Transformations (UMET) - UMR 8207

Journal title :

Metals

Abbreviated title :

Metals

Volume number :

Pages :

1543

Publisher :

MDPI AG

Publication date :

2021-09-28

ISSN :

2075-4701

HAL domain(s) :

Chimie/Matériaux

English abstract : [en]

The 304 Stainless Steel (SS304) is severely affected by salt water corrosion due to its high surface wettability. By reducing its surface wettability, its corrosion can be reduced. To achieve this, topographical modification ...
Show more >The 304 Stainless Steel (SS304) is severely affected by salt water corrosion due to its high surface wettability. By reducing its surface wettability, its corrosion can be reduced. To achieve this, topographical modification of the steel surface is an effective route. In this work, SS304 flat surfaces were topographically modified into microgrooves (ridge width 250 μm to 500 μm, groove width 200 μm, width ratio = ridge width/groove width >1). Wire cut electrical discharge machining was used to fabricate the microgrooves. Long-term wetting characteristics and long-term corrosion behaviour of flat surface and microgrooves were studied. The influence of the nature of wetting of the tested surfaces on their corrosion behaviour was examined. The sessile drop method and potentiodynamic polarization tests in sodium chloride (3.5 wt. % NaCl) solution (intermittent and continuous exposures for 168 h) were studied to characterize their wetting and corrosion behaviours, respectively. Topographical modification imparted long-term hydrophobicity and, as a consequence, long-term anticorrosion ability of the steel surface. Micropatterning reduced the corrosion rate by two orders of magnitude due to reduction in interfacial contact area with the corrosive fluid via composite wetting, i.e., solid–liquid–air interface. Microgrooves showed corrosion inhibition efficiency ≥88%, upon long-term exposure to NaCl solution. By comparing the wetting and corrosion behaviours of the microgrooves with those of the previously studied microgrooves (ridge width/groove width <1), it was found that the surface roughness of their ridges strongly influences their wetting and corrosion properties.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Métallurgie Physique et Génie des Matériaux

Submission date :

2024-01-15T14:31:34Z
2024-01-25T15:02:16Z

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Except where otherwise noted, this item's license is described as Attribution 3.0 United States

Version	Link	Modification date
2	20.500.12210/101665*	2024-01-25T14:58:10Z
1	20.500.12210/101665.1	2024-01-15T14:31:34Z

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Anticorrosion Behaviour of SS304 Microgroove ...

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