Reducing subjectivity in EIS interpretation of corrosion and corrosion inhibition processes by in-situ optical analysis

Denissen, Paul J.; Garcia, Santiago J.

doi:10.1016/j.electacta.2018.10.018

Cited by 40 publications

(51 citation statements)

References 38 publications

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“…Optical-electrochemical setup.- Figure 1 shows the improved optical-electrochemical setup used in this work derived from our previous studies. 17,18 The current and potential signals for EN were recorded with an Ivium Compactstat using IviumSoft V2.86. The electrochemical current noise (ECN) was measured between the two parallel working electrodes (see sample preparation) with the Compactstat acting as zero resistance ammeter (ZRA).…”

Section: Methodsmentioning

confidence: 99%

“…Compared to the setup used in our previous works, 18 a new geometry of the optical-electrochemical cell was used for the alignment of the high-resolution microscope. Two different magnification cameras from Dino-Lite with a 5.0 megapixel CMOS sensor (2592 × 1944 pixels) were used.…”

Section: Methodsmentioning

confidence: 99%

“…Timeresolved information can only be achieved by combining electrochemistry with a supplementary techniques such as in-situ XRD 15 or optical z E-mail: P.J.Denissen@tudelft.nl; S.J.GarciaEspallargas@tudelft.nl microscopy in real-time. [16][17][18] In the particular case of EN, gathering information on the corrosion processes that can be directly related to the EN signals would boost the potential use and robustness of this technique.…”

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confidence: 99%

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Interpreting Electrochemical Noise and Monitoring Local Corrosion by Means of Highly Resolved Spatiotemporal Real-Time Optics

Denissen

Homborg

Garcia

2019

J. Electrochem. Soc.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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Interpreting Electrochemical Noise and Monitoring Local Corrosion by Means of Highly Resolved Spatiotemporal Real-Time Optics

Denissen

Homborg

Garcia

2019

J. Electrochem. Soc.

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“…The validated contact probe is directly applied on an outdoor surface, such as the nineteenth statue of Napoleon located in Milan, to evaluate the efficiency of the restoration treatments [29,41,42,43]. In situ experimental results were comparable to those observed in the laboratory from bronze coupon samples [3,26,39,40,41]. In particular, |Z| is the measured parameter that resulted in a 10 mHz value, after in situ experiments, meaning that different areas showed different values of corrosion susceptibility.…”

Section: Electrochemical Impedance Spectroscopy In Chmentioning

confidence: 99%

Smart Electrochemical Portable Tools for Cultural Heritage Analysis: A Review

Valentini

2019

Sensors

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Protecting Cultural Heritage (CH) from corrosion and other environmental damages, mainly involving metallic or organic layers contained in artwork, represents a major challenge for conservation scientists. Electrochemical techniques provide useful information about the deterioration effects of metallic coatings and organic layers. Recently, Electrochemical Impedance Spectroscopy (EIS) has been successfully applied in the study of metallic corrosion. However, EIS has not succeeded in becoming a routine technique, due to problems regarding both instrumental apparatus (which is not ideal for in situ analysis, especially with previous cell configurations), and the difficulty with data processing. At the same time, new portable electrochemical sensors, immunosensors, and biosensors have successfully made a scientific impact, mainly with in situ diagnosis of organic components contained in CH objects. For this purpose, this review presents two sections: the first describes the analytical optimization of impedance electrochemical cell geometries that are suitable for in situ metal-coating investigation; the second reports on the assembly of small electrochemical sensors, immunosensors, and biosensors, which useful for in situ organic layer characterization. This overview summarizes the state of the art regarding the application of electrochemical techniques and small electrochemical devices as alternative tools for the understanding of CH.

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“…Due to the presence of the thiol group in the structure of the DEDTC, which also was found in very active corrosion inhibitors, this compound have a potential application to be used as an inexpensive corrosion inhibitor for the AA2024-T3 [45][46][47] . Ferrer et al 48 used the NaY zeolite particles double-doped with cerium and diethyldithiocarbamate (DEDTC) to improve the corrosion inhabitation of the AA2024-T3 in saline solution.…”

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confidence: 99%

Cerium/diethyldithiocarbamate complex as a novel corrosion inhibitive pigment for AA2024-T3

Mohammadi

Shahrabi

Mahdavian

et al. 2020

Sci Rep

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In this work, cerium-diethyldithiocarbamate (Ce-DEDTC) complex was synthesized as a novel anticorrosion pigment. the structure of the synthesized pigment was characterized by employing fourier transfer infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, inductively coupled plasma optical emission spectroscopy, and ultraviolet-visible spectroscopy. All of the characterization techniques showed that the Ce-DEDTC pigment was successfully produced. The electrochemical tests were used to investigate the subsequence effect of the synthesized complex on the corrosion behavior of the AA2024-T3. AA2024-T3 showed a wide passive range in the presence of the Ce-DEDTC pigment. Scanning electron microscopy, optical microscopy, X-ray photoelectron spectroscopy, and contact angle tests were employed to investigate the effect of the synthesized pigment on aluminum surface properties. The result illustrated that the existence of the Ce-DEDTC complex led to the creation of a thin film on the AA2024-T3 surface, which was significantly inhibited the localized corrosion of the aluminum alloy.Due to high strength to weight ratio and low density, aluminum, and its alloys have found various industrial applications 1-3 . AA2024-T3 which is the precipitation hardening alloy, has various engineering applications in aeronautics and aerospace industries 4 . S-phase Al 2 MgCu and Al-Cu-Fe-Mn are the main intermetallic compounds in the structure of the 2024-T3 aluminum alloy 4,5 . In the presence of these intermetallic compounds, the substrate is locally degraded, especially in the presence of halide species 5 . The utilization of coatings, especially organic coatings, is a promising method to improve the corrosion performance of aluminum alloy against aggressive solutions 6 . But, it is well-known that the organic coatings alone don't have the long-term protective behavior against the aggressive ions. Due to the permeation of the oxygen, water, and corrosive ions through the organic coatings, as the main corrosive species for the metallic substrates, the metal is degraded even in the presence of the organic coatings 7 . Therefore, for improving the ability of the organic coatings against the destructive species, the use of other materials is a requirement.Inhibitive pigments are the main additives used to improve the corrosion protection functioning of the organic coatings in corrosive media. Pigments are utilized in different types and they have different protection mechanisms [8][9][10] . It is generally believed that the pigments are the fine particle size and insoluble materials used as colloidal dispersions which are added to the organic coatings for various purposes 11 . Providing the color, modifying the applications of the coatings, reducing the cost and improving the performance of the coatings are the main pigment applications 11 . Enhancing the organic coatings corrosion inhibition is the most important application of the pigments. Although it was mentioned that the pigments are the insoluble materials, the corrosi...

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Reducing subjectivity in EIS interpretation of corrosion and corrosion inhibition processes by in-situ optical analysis

Cited by 40 publications

References 38 publications

Interpreting Electrochemical Noise and Monitoring Local Corrosion by Means of Highly Resolved Spatiotemporal Real-Time Optics

Interpreting Electrochemical Noise and Monitoring Local Corrosion by Means of Highly Resolved Spatiotemporal Real-Time Optics

Smart Electrochemical Portable Tools for Cultural Heritage Analysis: A Review

Cerium/diethyldithiocarbamate complex as a novel corrosion inhibitive pigment for AA2024-T3

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