Improvement of corrosion performance of 316L stainless steel via PVTMS/henna thin film

Polarization resistance and potentiodynamic scan testing were performed on 316L stainless steel (SS) at room temperature in carbon nanotube (CNT)-water nanofluid. Different CNT loadings of 0.05, 0.1, 0.3 and 0.5 wt% were suspended in deionized water using gum arabic (GA) surfactant. Corrosion potential, Tafel constants, corrosion rates and pitting potential values indicated better corrosion performance in the presence of CNTs with respect to samples tested in GA-water solutions. According to Gibbs free energy of adsorption, CNTs were physically adsorbed into the surface of the metal, and this adsorption followed Langmuir adsorption isotherm type II. Samples tested in CNT nanofluid revealed a corrosion performance comparable to that of tap water and better than that for GA-water solutions. Among all samples tested in CNT nanofluids, the lowest corrosion rate was attained with 0.1 wt% CNT nanofluid, while the highest value was obtained with 0.5 wt% CNT nanofluid. At higher CNT concentrations, accumulated CNTs might form active anodic sites and increase the corrosion rate. SEM images for samples of higher CNT loadings were observed to have higher pit densities and diameters.

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Electrophoretic deposition and corrosion performance of Zirconia-Silica composite coating applied on surface treated 316L stainless steel: Toward improvement of interface structure

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2019.125015 ◽

2019 ◽

Vol 380 ◽

pp. 125015 ◽

Cited By ~ 2

Author(s):

M. Farhadian ◽

K. Raeissi ◽

M.A. Golozar ◽

S. Labbaf ◽

T. Hajilou ◽

...

Keyword(s):

Stainless Steel ◽

Composite Coating ◽

Electrophoretic Deposition ◽

316L Stainless Steel ◽

Interface Structure ◽

Corrosion Performance ◽

Silica Composite

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Accelerated corrosion performance of AISI 316L stainless steel concrete reinforcement used in restoration works of ancient monuments

MATEC Web of Conferences ◽

10.1051/matecconf/201818803003 ◽

2018 ◽

Vol 188 ◽

pp. 03003 ◽

Cited By ~ 1

Author(s):

Sofia Tsouli ◽

Angeliki G. Lekatou ◽

Evangelos Siozos ◽

Spyridon Kleftakis

Keyword(s):

Stainless Steel ◽

316L Stainless Steel ◽

Salt Spray ◽

Localized Corrosion ◽

Corrosion Performance ◽

Cyclic Polarization ◽

Accelerated Corrosion ◽

Before And After ◽

Ancient Monuments ◽

Steel Rebars

The accelerated corrosion performance of AISI type 316L stainless steel rebars in solutions simulating concrete exposed to various environments was studied by means of cyclic polarization, before and after a four month salt spray test. B500A structural steel rebars were also tested for comparison reasons. Although 316L showed some susceptibility to localized corrosion during polarization in saturated Ca(OH)2containing 3.5 wt.% NaCl, four months of salt spraying did not significantly affect its polarization behavior. Salt spraying for 4 m did not have any significant effect on the macrostructural state of 316L reinforced concrete.

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