The effect of pure iron in a nanocrystalline grain size on the corrosion inhibitor behavior of sodium benzoate in near-neutral aqueous solution

Afshari, Vahid; Dehghanian, Changiz

doi:10.1016/j.matchemphys.2010.06.067

Cited by 16 publications

(5 citation statements)

References 28 publications

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“…Actually, numerical and experimental results show that the electrochemical reaction rate of nanograined materials is size-dependent. As examples, the corrosion resistance properties of 304 stainless steel in NaCl solution14151617 and iron in alkaline solutions18 were improved when the material grain size was at the nanometer scale. Despite the same chemical composition, the breakdown potential of the sputtered nanocrystalline (grain size approximately 25 nm) 304 type stainless steel film is found to be approximately 850 mV higher than that of the conventional material 16.…”

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confidence: 99%

Eigenstress model for electrochemistry of solid surfaces

Xiong

Gao

et al. 2016

Sci Rep

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Thermodynamic analysis and molecular dynamics simulations were conducted to systematically study the size-dependent electrochemical response of solids. By combining the generalized Young-Laplace equation with the popular Butler-Volmer formulation, the direct influence of surface stress on solid film electrochemical reactions was isolated. A series of thermodynamic formulas were developed to describe the size-dependent electrochemical properties of the solid surface. These formulas include intrinsic surface elastic parameters, such as surface eigenstress and surface elastic modulus. Metallic films of Au, Pt, Ni, Cu and Fe were studied as examples. The anodic current density of the metal film increased, while the equilibrium potential decreased with increasing solid film thickness.

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confidence: 99%

Eigenstress model for electrochemistry of solid surfaces

Xiong

Gao

et al. 2016

Sci Rep

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“…This fact means that this inhibitor can partially retard anodic (e. g. metal dissolution) and cathodic (e. g. hydrogen evolution) reactions. Adsorption of inhibitor molecules onto the metal surface and blocking the active sites is an accepted mechanism for such observations [39]. According to Table 3, the corrosion rate of mild steel coupon in 0.1 M HCl solution is remarkably increased after SNC process.…”

Section: Resultsmentioning

confidence: 99%

Improved corrosion inhibition of 3-amino-1,2,4-triazole on mild steel electrode in HCl solution using surface nanocrystallization

Pour-Ali

Rashid

Babakhani

2016

International Journal of Materials Research

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Improved corrosion inhibition of 3-amino-1,2,4triazole on mild steel electrode in HCl solution using surface nanocrystallization A nanocrystalline surface layer with average grain size of 77 nm was produced on mild steel through a wire brushing process. Its corrosion behavior was studied in the absence and presence of 3-amino-1,2,4-triazole (3-AT) as corrosion inhibitor. Although the increase in the inhibitor concentration shows a positive effect on inhibition efficiency of micro-and nano-grained surfaces, this effect is more remarkable for the sample with a nanocrystalline surface layer. In addition, in the presence of the optimum concentration of 3-AT, temperature increment has a more negative effect on the sample with a microcrystalline surface layer. The results also revealed that due to enhanced adsorption of 3-AT inhibitor and formation of a protective layer with a high polarization resistance, the inhibition effect of 3-AT increased as the grain size decreased from microcrystalline to nanocrystalline.

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“…Many researchers, , especially Gutman, systematically reported that mechanical effects lead to modified electrochemical reaction kinetics compared to those of stress-free solid materials. Moreover, many numerical and experimental results have shown that the electrochemical properties of nanoscale metallic materials are size-dependent. , The corrosion resistance properties of 304 stainless steel − and iron , in aqueous solutions are improved when the grain size of materials tends to be in the nanoscale regime. The corrosion rate of nanocrystalline zinc (56 nm) with a random orientation was approximately 60% lower than that of electrogalvanized steel .…”

Section: Introductionmentioning

confidence: 99%

Size-Dependent Electrochemical Properties of Pure Metallic Nanoparticles

Gao

Qian

et al. 2020

J. Phys. Chem. C

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A generalized size-dependent thermodynamic model was derived to describe the electrochemical properties of nanoparticles, which takes into account the effects of size-dependent stress distributions in the surface shell and core of nanoparticles, based on the thermodynamic equilibrium theory. This model can be used to simultaneously analyze the nanoparticle size, stresses, electrochemical properties, and their coupling behaviors in thermodynamic equilibrium nanoparticles. Combined with the molecular dynamics simulations, the spherical nanoparticles of pure metals (Au, Pt, Ni, Cu, and Fe) were modeled as a core–shell structure. The thermodynamic analysis showed that the anodic current density decreased with decreasing nanoparticle radius, implying that the stability of nanoparticles was enhanced, which is qualitatively consistent with some experimental observations.

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The effect of pure iron in a nanocrystalline grain size on the corrosion inhibitor behavior of sodium benzoate in near-neutral aqueous solution

Cited by 16 publications

References 28 publications

Eigenstress model for electrochemistry of solid surfaces

Eigenstress model for electrochemistry of solid surfaces

Improved corrosion inhibition of 3-amino-1,2,4-triazole on mild steel electrode in HCl solution using surface nanocrystallization

Size-Dependent Electrochemical Properties of Pure Metallic Nanoparticles

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