Corrosion Prevention of Magnesium Alloys

by Guang-Ling Song (Editor)

Overview

Magnesium (Mg) alloys are receiving increasing attention due to their abundance, light weight, castability, formability, mechanical properties and corrosion performance. By selecting the appropriate combination of materials, coatings and surface modifications, their corrosion resistance can be greatly enhanced. Corrosion prevention of magnesium alloys is a comprehensive guide to the effective prevention of corrosion in these important light metals.Part one discusses alloying, inhibition and prevention strategies for magnesium alloys as well as corrosion and prevention principles. Part two reviews surface treatment and conversion. Beginning with an overview of surface cleaning and pre-conditioning, the book goes on to discuss the use of surface processing and alloying, laser treatments, chemical conversion and electrochemical anodization to improve the corrosion resistance of magnesium alloys. Coatings are then the focus of part three, including varied plating techniques, cold spray coatings, gel and electroless electrophoresis coatings. Finally, the book concludes in part four with a selection of case studies investigating the application of preventative techniques for both automotive and medical applications.With its distinguished editor and international team of expert contributors, Corrosion prevention of magnesium alloys is a key reference tool for all those working with magnesium and its alloys, including scientists, engineers, metallurgists, aerospace and automotive professionals, and academics interested in this field. - Chapters provide an overview of surface cleaning and pre-conditioning - Examines processes to improve the corrosion resistance of magnesium alloys, including laser treatments and chemical conversion and electrochemical anodization - Discusses cold spray, sol-gel and electrophoretic coatings

Product Details

ISBN-13:	9780857098962
Publisher:	Woodhead Publishing, Limited
Publication date:	02/22/2013
Series:	Woodhead Publishing Series in Metals and Surface Engineering
Sold by:	Barnes & Noble
Format:	eBook
Pages:	582
File size:	13 MB
Note:	This product may take a few minutes to download.

About the Author

Guang-Ling Song is currently a Research Scientist in ORNL National Lab, USA after 5 years working for General Motors Global Research and Development. He is also an Adjunct Professor at the University of Queensland, Australia, known internationally for his research in the field of corrosion and corrosion protection.

Table of Contents

Contributor contact details Preface Part I: Alloying and inhibition Chapter 1: Corrosion behavior and prevention strategies for magnesium (Mg) alloys Abstract: 1.1 Introduction 1.2 Corrosion characteristics and implications in protection 1.3 Corrosion mitigation strategy 1.4 Selection of corrosion protection techniques 1.5 Future trends Chapter 2: Corrosion performance of magnesium (Mg) alloys containing rare-earth (RE) elements Abstract: 2.1 Introduction 2.2 Factors affecting the Mg-RE alloy corrosion reaction 2.3 Structural analysis of the Mg-RE alloys containing Ce or La 2.4 Structural analysis of the Mg-RE alloys containing Y 2.5 Structural analysis of the Mg-RE alloys containing Nd 2.6 Structural analysis of Mg-RE alloys containing Gd 2.7 The effect of the cathode area and current density on corrosion 2.8 Conclusions Chapter 3: Corrosion inhibition of magnesium (Mg) Alloys Abstract: 3.1 Introduction 3.2 Inhibitors for magnesium 3.3 The behavior of different inhibitors on magnesium and its alloys 3.4 The influence of inhibitors on other materials 3.5 Inhibition and other corrosion protection techniques 3.6 Conclusions and future trends Part II: Surface treatment and conversion Chapter 4: Surface cleaning and pre-conditioning surface treatments to improve the corrosion resistance of magnesium (Mg) alloys Abstract: 4.1 Introduction 4.2 Principles of physical or mechanical cleaning 4.3 Principles of chemical cleaning 4.4 Application of cleaning solutions to achieve the desired finish 4.5 Conclusion and sources of further information and advice Chapter 5: Surface processing and alloying to improve the corrosion resistance of magnesium (Mg) alloys Abstract: 5.1 Introduction 5.2 Surface processing techniques to improve corrosion resistance 5.3 Effect of surface processing and corrosion resistance 5.4 Alloying and corrosion resistance 5.5 Conclusions and future trends 5.6 Acknowledgements Chapter 6: Laser treatment to improve the corrosion resistance of magnesium (Mg) alloys Abstract: 6.1 Introduction 6.2 Surface engineering for combating corrosion 6.3 Laser surface alloying for combating corrosion 6.4 Laser surface cladding for combating corrosion 6.5 Conclusions and future trends 6.6 Acknowledgement Chapter 7: Micro-arc oxidation (MAO) to improve the corrosion resistance of magnesium (Mg) alloys Abstract: 7.1 Introduction 7.2 Micro-arc oxidation fundamentals 7.3 Techniques for the MAO process 7.4 Corrosion resistance properties of MAO coating 7.5 Applications, industrial MAO processing and exploration of new processes 7.6 Future trends 7.7 Acknowledgements Chapter 8: Anodization of magnesium (Mg) alloys to improve corrosion resistance Abstract: 8.1 Introduction 8.2 Anodization treatment 8.3 Effects of anodizing parameters 8.4 Commercial magnesium anodizing processes 8.5 Other methods and recent developments in anodizing treatment of magnesium 8.6 Applications of magnesium alloys 8.7 Future trends Chapter 9: Anodization and corrosion of magnesium (Mg) alloys Abstract: 9.1 Overview of anodizing techniq 9.2 Characteristics of anodizing behavior 9.3 Anodized coating/film 9.4 Influencing factors 9.5 Anodizing mechanism 9.6 Corrosion of anodized magnesium (Mg) alloys 9.7 Application examples Chapter 10: Corrosion-resistant coatings for magnesium (Mg) alloys Abstract: 10.1 Introduction 10.2 Conversion coatings for Mg alloys: chromate and phosphate coatings 10.3 Conversion coatings for Mg alloys: fluoride (F) and stannate coatings 10.4 Conversion coatings for Mg alloys: rare earth (RE) and other coatings 10.5 Coating pretreatment processes 10.6 Evaluation of the coating (corrosion) performance 10.7 Conclusions Part III: Coatings Chapter 11: Corrosion-resistant electrochemical plating of magnesium (Mg) alloys Abstract: 11.1 Introduction 11.2 Aqueous plating: pretreatment, undercoating and electroplating 11.3 Electroless Ni-P plating 11.4 Platings from non-aqueous electrolytes 11.5 Evaluation of coatings 11.