Electrochemical tests as alternatives to current methods for assessing effects of exhibition materials on metal artifacts

Reedy, Chandra L.; Corbett, R.A.; Burke, M. P.

doi:10.1179/sic.1998.43.3.183

Cited by 14 publications

(2 citation statements)

References 20 publications

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“…In the mass loss "gravimetric" experiment, the mass of a sample of C-steel C37 was first measured, and then it was placed in two distinct HCl solutions for 24 h. One solution included a PCE inhibitor with a certain concentration, whereas the other solution (blank) was without an inhibitor. After immersion, the samples underwent rinsing, drying with distilled water and acetone, and were subsequently measured again prior to being subjected to SEM testing All measurements were conducted in accordance with ASTM G 31-72 [22].…”

Section: Mass Loss Methodsmentioning

confidence: 99%

Electrochemical, Structural and Thermodynamic Investigations of Methanolic Parsley Extract as a Green Corrosion Inhibitor for C37 Steel in HCl

Boutoumit,

Elhawary,

Bellaouchou

et al. 2024

Coatings

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Phytochemical-rich natural extracts have recently attracted intense attention as green corrosion inhibitors and costly benign coating components for the protection of metallic structures of immense commercial importance. Herein, various methods were applied to assess the corrosion protection efficiency of a methanolic extract of parsley (Petroselinum crispum) (PCE) on carbon steel C37 in 1 M HCl. Initially, the chemical profile of PCE was analyzed using gas chromatography/mass spectrometry (GC/MS), and myristicin and apiol were identified as the main components. The results from the weight loss, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization (PDP) techniques revealed a substantial reduction in the corrosion rate upon the use of PCE, with a maximum inhibition efficiency of 92% at 1 g L−1 PCE. To optimize the performance, the corrosion behavior was investigated over a temperature range of 303–333 K and for concentrations of 0.1–1 g L−1. The inhibition effectiveness increased at higher concentrations of PCE, whilst it decreased when the temperature was elevated. The query suggests that the adsorption process involves both physical and chemical mechanisms. The adsorption of PCE onto C37 was well described by the Langmuir adsorption isotherm. The data were used to determine the activation energy and thermodynamic parameters. The PCE coating acted as a mixed-type inhibitor, hampering both cathodic and anodic corrosion reactions. SEM further confirmed the formation of a protective coating film on the steel surface when exposed to PCE. UV-Vis and XRD were implemented to understand the inhibition mechanism and formed products at the microscopic and spectroscopic levels. Hence, the green PCE inhibitor may potentially be applied in corrosion mitigation due to its high corrosion protection efficacy and its environmentally benign nature.

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Section: Mass Loss Methodsmentioning

confidence: 99%

Electrochemical, Structural and Thermodynamic Investigations of Methanolic Parsley Extract as a Green Corrosion Inhibitor for C37 Steel in HCl

Boutoumit,

Elhawary,

Bellaouchou

et al. 2024

Coatings

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“…A general and practical method widely applied in museums to evaluate the safety of storage and display materials is the Oddy test, which was first proposed by Andrew Oddy at the British Museum in 1973. More complex alternative tests have been suggested [7][8][9]; however, they have not yet been adopted in museum laboratories due to the specialized equipment and expertise required. The test system is incubated at 60°C for 28 days, after which the coupons are visually examined for evidence of corrosion due to off-gassing emissions from the test material.…”

Section: Introductionmentioning

confidence: 99%

Silver Nanoparticle Films as Sulfide Gas Sensors in Oddy Tests

et al. 2007

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The preparation and performance of a silver nanoparticle-based sensor for use in Oddy tests are reported. A suspension of spherical silver nanoparticles (Ag NPs) (mean diameter of 30 nm, absorption of surface plasmon resonance (SPR) at 428 nm) in methanol was synthesized and the Ag NPs were assembled into monolayer films on glass slides, using polyethylenimine as a linking agent. UV-Vis spectrophotometry was employed to measure the SPR intensity of the Ag NP films in order to evaluate the extent of reaction. It was observed that the Ag NP films were quite stable under Oddy test conditions in a blank test, after a brief alteration of the spectrum due to particle dispersal, with no significant decrease in the SPR intensity after 1.5 months at 60°C and 100% RH. The sensitivity of Ag NP films to sulfide gases emitted from a test wool fabric in the Oddy test was investigated. UV-Vis spectra taken after the Oddy tests showed the disappearance of the Ag NP SPR peak and the growth of the UV absorption due to Ag 2 S. Elemental analysis with energy dispersive x-ray spectroscopy confirmed that sulfur had been incorporated into the Ag NP film. Ag NP assemblies of lower NP density were created that indicated the presence of sulfide gases prior to significant tarnishing of a Ag foil. The results demonstrate that the Ag NP films can be used as sensitive, quantitative optical sensors to replace Ag foils in the Oddy test system.

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Restoration of cultural heritage: evaluation of the compatibility between metals and sealing products

Costa

Texier

2009

J Solid State Electrochem

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Electrochemical tests as alternatives to current methods for assessing effects of exhibition materials on metal artifacts

Cited by 14 publications

References 20 publications

Electrochemical, Structural and Thermodynamic Investigations of Methanolic Parsley Extract as a Green Corrosion Inhibitor for C37 Steel in HCl

Electrochemical, Structural and Thermodynamic Investigations of Methanolic Parsley Extract as a Green Corrosion Inhibitor for C37 Steel in HCl

Silver Nanoparticle Films as Sulfide Gas Sensors in Oddy Tests

Restoration of cultural heritage: evaluation of the compatibility between metals and sealing products

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