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Corrosion of Magnesium Alloys
G L Song (Edited by)
9781845697082, Elsevier Science
Hardback, published 25 March 2011
656 pages
23.3 x 15.6 x 3.5 cm, 0.13 kg
"…a useful addition to any library dealing with materials… I highly recommend this book." --Materials World
The use of magnesium alloys is increasing in a range of applications, and their popularity is growing wherever lightweight materials are needed. This book provides a comprehensive account of the corrosion of magnesium alloys. It covers not only the corrosion performances and mechanisms of Mg alloys in conventional environments, such as sodium chloride solutions, but also looks at their corrosion behaviours in special media, like engine coolants and simulated body fluids.Part one covers fundamentals such as the corrosion electrochemistry, activity and passivity of magnesium and its alloys. Part two then considers the metallurgical effect in relation to the corrosion of magnesium alloys, including the role of micro-structure and earth-rare elements, the corrosion behaviour of magnesium-based bulk metallic glasses, and the corrosion of innovative magnesium alloys. Part three goes on to describe environmental influences on the corrosion of magnesium alloys, such as atmospheric corrosion, stress corrosion cracking, creep and fatigue behaviour, and galvanic corrosion. Finally, part four is concerned with various means of protecting magnesium alloys against corrosion through the use of aluminium electrodeposition, conversion and electrophoretic coatings, and anodisation.With its distinguished editor and team of contributors, this book is an invaluable resource for metallurgists, engineers and designers working with magnesium and its alloys, as well as professionals in the aerospace and automotive industries.
Contributor contact details Preface Part I: Fundamentals Chapter 1: Corrosion electrochemistry of magnesium (Mg) and its alloys Abstract: 1.1 Introduction 1.2 Thermodynamics 1.3 Surface film 1.4 Anodic process 1.5 Cathodic process 1.6 Corrosion mechanism and characteristic processes Chapter 2: Activity and passivity of magnesium (Mg) and its alloys Abstract: 2.1 Active and passive behaviors of magnesium (Mg) and its alloys 2.2 Passive properties and stability 2.3 Improvements and promising avenues of the passive behavior 2.4 Specific factors characterizing corrosion behavior 2.5 Active and passive behaviors and corrosion forms 2.6 Performance of sacrificial magnesium (Mg) and its alloys 2.7 Mechanism of corrosion of sacrificial anodes 2.8 Examples of actual and possible uses 2.9 Evaluation of the sacrificial behavior 2.10 Future trends 2.11 Acknowledgements Part II: Metallurgical effects Chapter 3: Corrosion of magnesium (Mg) alloys and metallurgical influence Abstract: 3.1 Introduction 3.2 Measurement details 3.3 Second phase effect 3.4 Impurity concentration 3.5 Surface condition 3.6 Medical implant applications 3.7 Concluding remarks 3.8 Acknowledgements Chapter 4: Role of structure and rare earth (RE) elements on the corrosion of magnesium (Mg) alloys Abstract: 4.1 Introduction 4.2 Role of structure on the corrosion process of magnesium (Mg) alloy 4.3 Role of rare earth (RE) elements on the corrosion process of magnesium (Mg) alloy Chapter 5: Corrosion behaviour of magnesium (Mg)-based bulk metallic glasses Abstract: 5.1 Introduction 5.2 Magnesium (Mg)-based bulk metallic glasses (BMGs) 5.3 Effect of micro-structural refinement on the corrosion of magnesium (Mg)-based alloys 5.4 General corrosion and passivation behaviour of magnesium (Mg)-based bulk metallic glasses (BMGs) 5.5 Chloride-induced local corrosion behaviour of magnesium (Mg)-based metallic glasses 5.6 Effect of hydrogen on the stability of magnesium (Mg)-based glassy alloys 5.7 Future trends 5.8 Acknowledgements Chapter 6: Corrosion of innovative magnesium (Mg) alloys Abstract: 6.1 Recycled alloys 6.2 Amorphous alloys 6.3 Alloy coatings 6.4 Ion implantation 6.5 Laser processed magnesium (Mg) alloys Part III: Environmental influences Chapter 7: Atmospheric corrosion of magnesium (Mg) alloys Abstract: 7.1 Introduction 7.2 The atmospheric environment 7.3 Electrochemical reactions 7.4 The oxide film 7.5 The effect of atmospheric gases and particles 7.6 Corrosion of magnesium (Mg) alloys during field exposure 7.7 Corrosion products 7.8 Influence of microstructure on the atmospheric corrosion behaviour 7.9 Differences between field-exposed magnesium (Mg) and accelerated tests 7.10 Concluding remarks Chapter 8: Stress corrosion cracking (SCC) of magnesium (Mg) alloys Abstract: 8.1 Introduction 8.2 Alloy influences 8.3 Loading 8.4 Environmental influences 8.5 Fractography 8.6 Stress corrosion cracking (SCC) mechanisms 8.7 Recent insights 8.8 Open issues 8.9 Acknowledgements Chapter 9: Corrosion creep and fatigue behavior of magnesium (Mg) alloys Abstract: 9.1 Introduction 9.2 Historical review of environmentally enhanced creep and fatigue of metals 9.3 Mechanoelectrochemical behavior of magnesium (Mg) alloys 9.4 Corrosion creep of magnesium (Mg) and diecast magnesium (Mg) alloys 9.5 Corrosion fatigue of magnesium (Mg) alloys 9.6 Summary Chapter 10: Magnesium (Mg) corrosion: a challenging concept for degradable implants Abstract: 10.1 An introduction to degradable magnesium (Mg) implants 10.2 The appropriate selection and use of biodegradable magnesium (Mg) alloys 10.3 In vivo corrosion of magnesium (Mg) alloys: what happens in living tissue? 10.4 Methods to characterize in vivo corrosion 10.5 In vitro corrosion test methods 10.6 Future trends Chapter 11: Corrosion of magnesium (Mg) alloys in engine coolants Abstract: 11.1 Introduction 11.2 Magnesium (Mg) alloys and coolants 11.3 Laboratory evaluation methodology 11.4 Corrosion of magnesium (Mg) in ethylene glycol solution 11.5 Magnesium (Mg) alloys in ethylene glycol solution 11.6 Magnesium (Mg) alloys in commercial coolants 11.7 Corrosion inhibition 11.8 Health and environmental concerns 11.9 Summary Chapter 12: Numerical modelling of galvanic corrosion of magnesium (Mg) alloys Abstract: 12.1 Introduction 12.2 Boundary element method (BEM) model 12.3 One-dimensional (1D) galvanic corrosion 12.4 Galvanic interaction 12.5 Steel fastener 12.6 Discussion 12.7 Conclusions 12.8 Future trends 12.9 Acknowledgements Chapter 13: Non-aqueous electrochemistry of magnesium (Mg) Abstract: 13.1 Introduction 13.2 A short review of non-aqueous electrolyte solutions 13.3 A short review of the passivation phenomena of active metals in non-aqueous electrolyte solutions 13.4 Magnesium (Mg) electrodes in conventional polar aprotic solvents and in Grignard solutions 13.5 Ionic liquids (ILs) for magnesium (Mg) electrochemistry 13.6 On solutions with a wide electrochemical window (> 2 V) in which magnesium (Mg) deposition is reversible 13.7 On magnesium (Mg) ions insertion into inorganic hosts 13.8 Future trends Part IV: Corrosion protection Chapter 14: Electrodeposition of aluminum (Al) on magnesium (Mg) alloy in ionic liquid Abstract: 14.1 Introduction 14.2 Basics for ionic liquid plating 14.3 Electrochemical characteristics of AlCl3–EMIC ionic liquids 14.4 Material characteristics 14.5 Electrochemical and corrosion resistance of aluminum (Al) and aluminum/zinc (Al/Zn)-coated magnesium (Mg) alloys 14.6 Summary 14.7 Acknowledgement Chapter 15: Corrosion protection of magnesium (Mg) alloys using conversion and electrophoretic coatings Abstract: 15.1 Introduction 15.2 Conversion coating for magnesium (Mg) and its alloys 15.3 Electrocoat 15.4 Concluding remarks Chapter 16: Anodization and corrosion of magnesium (Mg) alloys Abstract: 16.1 Overview of anodizing techniques 16.2 Characteristics of anodizing behavior 16.3 Anodized coating/film 16.4 Influencing factors 16.5 Anodizing mechanism 16.6 Corrosion of anodized magnesium (Mg) alloys 16.7 Application examples Chapter 17: Corrosion of magnesium (Mg) alloys: concluding remarks Index
Subject Areas: Metals technology / metallurgy [TDM]
