Anticorrosion Behaviour of SS304 Microgroove Surfaces in Saline Water

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

Type de document :

Article dans une revue scientifique

DOI :

10.3390/met11101543

URL permanente :

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

Titre :

Anticorrosion Behaviour of SS304 Microgroove Surfaces in Saline Water

Auteur(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

Titre de la revue :

Metals

Nom court de la revue :

Metals

Numéro :

Pagination :

1543

Éditeur :

MDPI AG

Date de publication :

2021-09-28

ISSN :

2075-4701

Discipline(s) HAL :

Chimie/Matériaux

Résumé en anglais : [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 ...
Lire la suite >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.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Métallurgie Physique et Génie des Matériaux

Date de dépôt :

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

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metals-11-01543-v3.pdf
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Ce document est diffusé sous licence Attribution 3.0 United States

Numéro de version	Lien	Date de modification
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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