Electrochemical Impedance Spectroscopy of Coated Aluminum Beverage Containers: Part 1 — Determination of an Optimal Parameter for Large Sample Evaluation

Grandle, J. A.; Taylor, S. R.

doi:10.5006/1.3293469

Cited by 72 publications

(42 citation statements)

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“…7b). The scattering of data points has been explained to be due to the result of the current fluctuation caused by the initiation of pitting on the surface of the metal [35]. The Nyquist plot for the coated specimen (CS-100) demonstrated a smooth curve free from the scattering of data points in the lower frequency region.…”

Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 95%

Corrosion behaviour of nano structured sol-gel alumina coated 9Cr–1Mo ferritic steel in chloride bearing environments

Ruhi

Modi

Singh

2009

Surface and Coatings Technology

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Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 95%

Corrosion behaviour of nano structured sol-gel alumina coated 9Cr–1Mo ferritic steel in chloride bearing environments

Ruhi

Modi

Singh

2009

Surface and Coatings Technology

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“…Several equivalent circuits have been evaluated in order to model electrode-electrolyte interfaces coated with organic films [25][26][27] and CPs [28][29][30]. Cui and co-workers used a simple model of interface that was proposed by Bobacka et al [28] for a neural electrode coated with PEDOT.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical characterization of implantable neural microelectrodes modified with conducting polymer nanotubes

2008

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Neural prostheses transduce bioelectric signals to electronic signals at the interface between neural tissue and neural microelectrodes. A low impedance electrode-tissue interface is important for the quality of signal during recording as well as quantity of applied charge density during stimulation. However, neural microelectrode sites exhibit high impedance because of their small geometric surface area. Here we analyze nanostructured-conducting polymers that can be used to significantly decrease the impedance of microelectrode typically by about two orders of magnitude and increase the charge transfer capacity of microelectrodes by three orders of magnitude. In this study poly (pyrrole) (PPy) and poly(3, 4-ethylenedioxythiophene) (PEDOT) nanotubes were electrochemically polymerized on the surface of neural microelectrode sites (1250 μm 2 ). An equivalent circuit model comprising a coating capacitance in parallel with a pore resistance and interface impedance in series was developed and fitted to experimental results to characterize the physical and electrical properties of the interface. To confirm that the fitting parameters correlate with physical quantities of interface, theoretical equations were used to calculate the parameter values thereby validating the proposed model. Finally, an apparent diffusion coefficient was calculated for PPy film (29.2 ± 1.1 cm 2 /s), PPy nanotubes (72.4 ± 3.3 cm 2 /s), PEDOT film (7.4 ± 2.1 cm 2 /s), and PEDOT nanotubes (13.0 ± 1.8 cm 2 /s). The apparent diffusion coefficient of conducting polymer nanotubes was larger than the corresponding conducting polymer films.

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“…Figure 14 [40] shows the low-frequency impedance values at 0.1 Hz (Z If ) of the silane-treated AA 2024-T3 panels after 24 h of immersion in the 0.6 M NaCl solution and the contact angles for the silane films, as a function of the number of CH 2 groups in the silanes. Z If values here can be roughly considered as a measure of corrosion performance of silane films [41]. It is observed that the values of both Z If and contact angles increase with the number of CH 2 groups.…”

Section: Effect Of Ch 2 Chain Length On the Corrosion Protection Of Amentioning

confidence: 96%

Overview: The Potential of silanes for chromate replacement in metal finishing industries

et al. 2006

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Trialkoxysilanes (or silanes) have emerged as a very promising alternative for chromates in metal finishing industries. Compared to the conventional chromating processes, the major merits of silane-based surface treatments include: eco-compliance, easy-control processing, comparable corrosion protection of metals as well as paint adhesion to a variety of topcoats. In this overview paper, we report the recent status of silane studies including results of corrosion performance tests, the mechanism of corrosion protection of metals by silanes and the themal stabilities of silane films. We also address the new fields that we are beginning to explore such as nano-structured silane films, "self-healing" silane films, and "super-primers".

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Electrochemical Impedance Spectroscopy of Coated Aluminum Beverage Containers: Part 1 — Determination of an Optimal Parameter for Large Sample Evaluation

Cited by 72 publications

References 0 publications

Corrosion behaviour of nano structured sol-gel alumina coated 9Cr–1Mo ferritic steel in chloride bearing environments

Corrosion behaviour of nano structured sol-gel alumina coated 9Cr–1Mo ferritic steel in chloride bearing environments

Experimental and theoretical characterization of implantable neural microelectrodes modified with conducting polymer nanotubes

Overview: The Potential of silanes for chromate replacement in metal finishing industries

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