Novel Electrochemical Techniques in Corrosion Research

Grundmeier, Guido; Jttner, Klaus-Michael; Stratmann, M.

doi:10.1002/9783527619306.ch7

Cited by 12 publications

(3 citation statements)

References 204 publications

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“…Therefore, as a rough guide, SKPFM is unlikely to resolve information about intermetallic features should the thickness of the oxides exceed 250 nm. Note that the potential difference measured by SKPFM in a system metal-oxide-air is determined by the sum of potential differences of all interfaces 23,24…”

Section: Resultsmentioning

confidence: 99%

Applications and Limitations of Scanning Kelvin Probe Force Microscopy for the Surface Analysis of Aluminum Alloys

Muster

Hughés

2006

J. Electrochem. Soc.

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The surface properties of aluminum alloy 2024-T3 ͑AA2024-T3͒ sheet after several surface treatments were investigated using scanning Kelvin probe force microscopy ͑SKPFM͒ and scanning electron microscopy ͑SEM͒. Treatments included boiling water, sodium chloride solution, and a chromate-free deoxidizing solution. The ability of SKPFM to resolve contact potential differences on both polished and rolled AA2024-T3 surfaces has been evaluated. While sensible data could be obtained on rolled sheet surfaces, SKPFM on pitted surfaces proved to be problematic. The inability of the scanning tip to accurately trace the surface topography resulted in erroneously high contact potential differences. Polished AA2024-T3 was analyzed by SEM before and after oxide growth. Carbon deposits on polished AA2024-T3 occurring during SEM analysis were revealed as areas with contact potential contrast using SKPFM. The influence of oxide thickening on contact potential differences was explored for AA2024-T3 and pure copper foil. The applicability of SKPFM for studying intermetallic features on other aluminum and other common engineering alloys is discussed.

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Section: Resultsmentioning

confidence: 99%

Applications and Limitations of Scanning Kelvin Probe Force Microscopy for the Surface Analysis of Aluminum Alloys

Muster

Hughés

2006

J. Electrochem. Soc.

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“…The Scanning Kelvin Probe (SKP) allows the study of localized corrosion processes underneath insulating coatings [34] relevant for the corrosion processes at the polymer-coated metal interface, like swelling and ion incorporation into the coating [35]; the initiation of localized corrosion in defects; and corrosion propagation, caused by anodic or cathodic reactions occurring on the underlying interface. The SKP measures the work-function of a sample using the vibrating condenser method.…”

Section: Scanning Electrochemical Techniquesmentioning

confidence: 99%

A Critical Review of the Application of Electrochemical Techniques for Studying Corrosion of Mg and Mg Alloys: Opportunities and Challenges

Fajardo¹,

García-Galván²,

Barranco³

et al. 2018

Magnesium Alloys - Selected Issue

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In order to elucidate the corrosion mechanism of Magnesium (Mg), assess its corrosion rate and evaluate the viability of effective corrosion protection methods, a number of different and complementary techniques are required. Aqueous corrosion is, in nature, an electrochemical process and as such electrochemical methods represent a powerful tool for the study of Mg corrosion. In this chapter the main electrochemical techniques used to study the corrosion of Mg are reviewed along with other simple non-electrochemical methods such as weight loss and hydrogen evolution measurements. The electrochemical techniques covered in this review include conventional DC and AC electrochemical techniques and the latest advances in local electrochemical methods for the evaluation and characterization of Mg corrosion. Each technique presented will be discussed, and its major advantages and drawbacks for the study of Mg corrosion will be commented. Applications range from studies of influence of the impurities in catalytic activity of high purity Mg towards hydrogen evolution, the determination of corrosion rate for Mg and Mg alloys by electrochemical methods and electrochemical study of sol-gel films as pretreatment for Mg alloys.

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“…One can also observe that corrosion products were distributed on the surface of the UHS steel more heterogeneously. According to literature [59], the Galvani potential difference between the sample under study and Kelvin probe, A step increase in difference of potential between the pristine and the corroded surfaces of the UHS steel, ∆E kp , with the time of the NSS test is caused by thickening of the oxide film (or an icrease in ox Φ ∆…”

Section: Study On Electrochemical and Initial Corrosion Behavior Of U...mentioning

confidence: 99%

Application of the Scanning Kelvin Probe Technique for Characterization of Corrosion Interfaces

Łosiewicz

Popczyk

Szklarska

et al. 2015

SSP

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This paper deals with the basic theory and the usability of the scanning Kelvin probe (SKP) being a non-destructive, non-contact method for testing the condition of the surface of conductor, semiconductor and dielectric samples. This technique is based on the electron work function (EWF) characteristic of various test substances and depends, inter alia, on the sample surface condition. During measurement, the so-called surface potential distribution map containing information about EWF value is registered. Key applications of SKP and its various modifications to characterization of corrosion interfaces, have been presented based on the newest literature data covering the past two years of the active research in the field of corrosion in a nanoscale.

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Novel Electrochemical Techniques in Corrosion Research

Cited by 12 publications

References 204 publications

Applications and Limitations of Scanning Kelvin Probe Force Microscopy for the Surface Analysis of Aluminum Alloys

Applications and Limitations of Scanning Kelvin Probe Force Microscopy for the Surface Analysis of Aluminum Alloys

A Critical Review of the Application of Electrochemical Techniques for Studying Corrosion of Mg and Mg Alloys: Opportunities and Challenges

Application of the Scanning Kelvin Probe Technique for Characterization of Corrosion Interfaces

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