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Heterogeneous Electrode Processes and Localized Corrosion (eBook)

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2012 | 1. Auflage
264 Seiten
John Wiley & Sons Inc (Verlag)
978-1-118-46633-9 (ISBN)

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Heterogeneous Electrode Processes and Localized Corrosion -  R. Winston Revie,  Mike Yongjun Tan
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Sheds new light on the significance of electrode inhomogeneity and electrochemical heterogeneity A major contribution to the field of electrochemistry, this book based on a thorough review of the literature and author Yongjun Tan's twenty years of pioneering research examines electrochemical heterogeneity and its effects on non-uniform electrode processes. The book focuses on localized corrosion, uneven electrodeposition, and non-uniform electrodissolution. Readers will learn all the core fundamentals, experimental methods, and engineering aspects of localized corrosion and other important heterogeneous electrode processes. In particular, readers will learn core methods to quickly calculate corrosion rates and study electrode inhomogeneity and electrochemical heterogeneity. Heterogeneous Electrode Processes and Localized Corrosion begins with a review of homogeneous electrode models and uniform corrosion measurements and then explores probing electrode inhomogeneity, electrochemical heterogeneity, and localized corrosion. Next, the book examines: Visualizing localized corrosion using electrochemically integrated multi-electrode arrays Measuring thermodynamic and kinetic parameters of localized corrosion processes Characterizing inhomogeneity and localized corrosion on coated electrode surfaces Designing experiments to study localized corrosion and its inhibition in inhomogeneous media Sensing localized electrodeposition and electrodissolution Exploring versatile heterogeneous electrode processes Throughout the book, there are case studies with maps that illustrate key aspects of heterogeneous electrode processes. In addition, the author provides plenty of examples that enable readers to fully grasp core concepts of electrochemical heterogeneity and its relationship to non-uniform electrode processes. Reviewing the experimental findings presented in this book, electrochemists will gain a better appreciation and understanding of the fundamental significance of electrode inhomogeneity and electrochemical heterogeneity.

YONGJUN TAN is currently Associate Professor of Applied Electrochemistry and Corrosion Technology at Deakin University, Australia. Dr. Tan invented the wire beam electrode method and developed a localized corrosion probe. He has contributed to the development of the electrochemical noise analysis technique and the understanding of noise signatures. Dr. Tan has authored or coauthored more than 100 scientific and technical publications in the fields of electrochemistry and corrosion science.

Preface ix

1. Homogeneous Electrode Models and Uniform CorrosionMeasurements 1

1.1 Homogeneous electrodes and traditional electrochemicalmethods 3

1.2 Mixed electrodes and uniform corrosion models7

1.3 The mixed potential theory and electrochemicalcorrosion measurement 10

1.4 Electrochemical impedance investigation ofelectrode-solution interface 19

1.5 Electrochemical noise monitoring of rapidelectrode processes 26

1.6 Issues and difficulties in traditionalelectrochemical methods 31

References 32

2. Probing Electrode Inhomogeneity, ElectrochemicalHeterogeneity and Localized Corrosion 37

2.1 Probing electrode inhomogeneity 39

2.2 Probing electrochemical heterogeneity and localizedcorrosion 44

2.3 Overview of various techniques for probing localizedcorrosion 48

References 61

3. Visualizing Localized Corrosion Using ElectrochemicallyIntegrated Multielectrode Arrays 67

3.1 An electrochemically integrated multielectrode array: Thewire beam electrode 70

3.2 Visualizing the progression of localized corrosion in anEvans water drop 76

3.3 Visualizing localized corrosion in environments with ionconcentration gradients 84

3.4 Visualizing localized corrosion by the WBE in conjunctionwith scanning probes 91

References 99

4. Measuring Thermodynamic and Kinetic Parameters fromLocalized Corrosion Processes 101

4.1 Methods of probing localized corrosion thermodynamics andkinetics 103

4.2 Measuring localized corrosion using theoverpotential-galvanic current method 109

4.3 Measuring localized corrosion using the galvanic currentmethod 120

4.4 Measuring localized corrosion using the Rn-WBEmethod 125

References 131

5. Characterizing Inhomogeneity and Localised Corrosion onCoated Electrode Surfaces 135

5.1 Characterising inhomogeneities in organic coatings andinhibitor films 137

5.2 Characterising inhomogeneity in organic coatings using theWBE method 141

5.3 The effects of coating inhomogeneity on electrochemicalmeasurement 145

5.4 Visualisng underfilm corrosion and the effects of cathodicprotection 148

5.5 Studying corrosion protection by coatings and cathodicprotection 155

References 157

6. Designing Experiments for Studying Localized Corrosion andIts Inhibition in Inhomogeneous Media 161

6.1 Basic issues in localized corrosion and inhibitor testdesign 162

6.2 Fundamental considerations in selecting corrosionmeasurement techniques 165

6.3 Designing corrosion tests in highly-resistive andinhomogeneous media 168

6.4 Case studies: Designing crevice corrosion tests by means ofthe WBE 181

6.5 Case study: Designing experiments for localized corrosioninhibitor discovery 186

References 190

7. Sensing Localized Electrodeposition andElectrodissolution195

7.1 Experimental methods for sensing localized electrodepositionand dissolution 197

7.2 Sensing localized electrodeposition using the WBE 200

7.3 Sensing localized electrodissolution using the WBE 204

7.4 Sensing nonuniform electrochemical deposition of organiccoatings 211
References 216

8. Versatile Heterogeneous Electrode Processes 219

8.1 Scanning and modeling various heterogeneous electrodeprocesses 222

8.2 Electrochemical noise generation from electrochemicalheterogeneity 225

8.3 Harvesting electrical power from electrochemical using theWBE 231

8.4 Further research issues on electrochemical heterogeneity237

References 238

Index 243

Erscheint lt. Verlag 9.10.2012
Reihe/Serie Wiley Series in Corrosion
Wiley Series in Corrosion
Sprache englisch
Themenwelt Naturwissenschaften Chemie Physikalische Chemie
Naturwissenschaften Chemie Technische Chemie
Technik Maschinenbau
Schlagworte chemical engineering • Chemie • Chemische Verfahrenstechnik • Chemistry • Corrosion • Electrochemistry • Elektrochemie • Korrosion • Materials Science • Materialwissenschaften
ISBN-10 1-118-46633-0 / 1118466330
ISBN-13 978-1-118-46633-9 / 9781118466339
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