Effect of cobalt addition on the corrosion ...
Type de document :
Compte-rendu et recension critique d'ouvrage
DOI :
Titre :
Effect of cobalt addition on the corrosion behavior of near equiatomic NiTi shape memory alloy in normal saline solution: electrochemical and XPS studies
Auteur(s) :
Alqarni, Nawal [Auteur]
Taif University [TU]
Wysocka, Joanna [Auteur]
El-Bagoury, Nader [Auteur]
Taif University [TU]
Ryl, Jacek [Auteur]
Amin, Mohammed [Auteur]
Taif University [TU]
Boukherroub, Rabah [Auteur]
NanoBioInterfaces - IEMN [NBI - IEMN]
Taif University [TU]
Wysocka, Joanna [Auteur]
El-Bagoury, Nader [Auteur]
Taif University [TU]
Ryl, Jacek [Auteur]
Amin, Mohammed [Auteur]
Taif University [TU]
Boukherroub, Rabah [Auteur]
![refId](/themes/Mirage2//images/idref.png)
NanoBioInterfaces - IEMN [NBI - IEMN]
Titre de la revue :
RSC Advances
Pagination :
19289-19300
Éditeur :
Royal Society of Chemistry
Date de publication :
2018
Discipline(s) HAL :
Chimie/Matériaux
Résumé en anglais : [en]
The electrochemical and corrosion (uniform and localized) behavior of a binary Ni52Ti48 shape memory alloy (SMA) and two ternary Ni52Ti48−xCox (x = 1.5 and 4.0 wt%) SMAs were studied. Measurements were conducted in 0.9% ...
Lire la suite >The electrochemical and corrosion (uniform and localized) behavior of a binary Ni52Ti48 shape memory alloy (SMA) and two ternary Ni52Ti48−xCox (x = 1.5 and 4.0 wt%) SMAs were studied. Measurements were conducted in 0.9% NaCl solution at 37 °C employing various electrochemical methods. These include: linear polarization resistance (LPR), linear sweep voltammetry (LSV), chronoamperometry and dynamic electrochemical impedance spectroscopy (DEIS). Such measurements were complemented with scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) analysis. Results revealed that the addition of alloyed Co to NiTi significantly reduced the uniform corrosion rate of the studied SMA and greatly enhanced its pitting corrosion resistance. XPS measurements evidenced high stability of the passive layer and limited adsorption of chloride ions. Additionally, it was found that the passive layer remained primarily composed of titanium oxides. Microstructure changes accompanying the addition of Co were also used to account for its role in improving the corrosion resistance of these materials.Lire moins >
Lire la suite >The electrochemical and corrosion (uniform and localized) behavior of a binary Ni52Ti48 shape memory alloy (SMA) and two ternary Ni52Ti48−xCox (x = 1.5 and 4.0 wt%) SMAs were studied. Measurements were conducted in 0.9% NaCl solution at 37 °C employing various electrochemical methods. These include: linear polarization resistance (LPR), linear sweep voltammetry (LSV), chronoamperometry and dynamic electrochemical impedance spectroscopy (DEIS). Such measurements were complemented with scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) analysis. Results revealed that the addition of alloyed Co to NiTi significantly reduced the uniform corrosion rate of the studied SMA and greatly enhanced its pitting corrosion resistance. XPS measurements evidenced high stability of the passive layer and limited adsorption of chloride ions. Additionally, it was found that the passive layer remained primarily composed of titanium oxides. Microstructure changes accompanying the addition of Co were also used to account for its role in improving the corrosion resistance of these materials.Lire moins >
Langue :
Anglais
Vulgarisation :
Non
Source :
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- https://pubs.rsc.org/en/content/articlepdf/2018/ra/c8ra02031k
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- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9080660/pdf
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