Corrosion Protection Of Magnesium And Magnesium Alloys

Author : G L Song
Publisher : Woodhead Publishing
Page : 0 pages
File Size : 44,8 Mb
Release : 2011-03-25
Category : Technology & Engineering
ISBN : 1845697081

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Corrosion of Magnesium Alloys by G L Song Pdf

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.

Author : E. L. White,Frederick W. Fink
Publisher : Unknown
Page : 42 pages
File Size : 45,7 Mb
Release : 1965
Category : Magnesium alloys
ISBN : UOM:39015095155654

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Corrosion Protection of Magnesium and Magnesium Alloys by E. L. White,Frederick W. Fink Pdf

This memorandum deals with the corrosion protection of magnesium and magnesium alloys. The corrosion resistance of these alloys in many natural environments, while not as good as that of copper, nickel, stainless steel, and aluminum, is in the same range as that of the iron and plain carbon steels. Some type of additional corrosion protection is often necessary and, as with steel, the protective measures usually involve some type of coating system and/or surface treatments. Also, magnesium can suffer accelerated attack when coupled, in the presence of a conductive electrolyte, to most metals below it in the galvanic series. This galvanic effect complicates the problem of corrosion protection. A number of coating systems have been proposed and used satisfactorily. Depending upon the application, these coating systems include the use of conversion coatings, organic coatings, metallic coatings, and others. In addition, special designs can be employed to improve the over-all corrosion resistance of the systems. This memorandum describes many of the coating systems and design methods which are used to reduce corrosive attack on both galvanically coupled and uncoupled magnesium assembliesd (Author).

Author : Guang-Ling Song
Publisher : Woodhead Publishing
Page : 586 pages
File Size : 45,8 Mb
Release : 2017-11-13
Category : Technology & Engineering
ISBN : 0081015976

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Corrosion Prevention of Magnesium Alloys by Guang-Ling Song Pdf

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

Author : G.-L. Song
Publisher : Elsevier Inc. Chapters
Page : 582 pages
File Size : 41,7 Mb
Release : 2013-02-22
Category : Technology & Engineering
ISBN : 9780128089408

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Corrosion prevention of magnesium alloys by G.-L. Song Pdf

Magnesium (Mg) alloys have low corrosion resistance and exhibit unusual corrosion behavior in aqueous environments. Because of this unique corrosion performance, some special corrosion prevention techniques have to be employed for Mg alloys in their applications. This chapter briefly summarizes the corrosion characteristics of Mg alloys, and also presents a strategy and methodologies to mitigate the corrosion damage of Mg alloys in applications.

Author : Liang Wu,Xiao-Bo Chen,Yingwei Song
Publisher : Frontiers Media SA
Page : 111 pages
File Size : 54,9 Mb
Release : 2023-02-16
Category : Technology & Engineering
ISBN : 9782832515617

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Corrosion and Protection of Magnesium Alloys by Liang Wu,Xiao-Bo Chen,Yingwei Song Pdf

Magnesium (Mg) alloys, possessing good thermal and electrical conductivity, low density, recyclability, high specific strength, and excellent damping capacity, are regarded as one of the most promising light metallic materials. Mg alloys are also known as the “inexhaustible green light engineering material” compared with steel, aluminum, copper, and engineering plastics, providing some important applications in communications, automotive, defense, aerospace, and biomedical industries. However, the low electrode potential causes poor corrosion resistance in the environment of moist air, sulfur, and marine atmosphere. And thus, the corrosion and protection technology of Mg and its alloys is listed as an important research topic in this field. In this Research Topic, the latest research papers on corrosion and protection of Mg and its alloys are collected to provide a platform for researchers and readers to understand the recent developments in this field. Good use of this platform could improve the international research level in corrosion and protection of Mg and its alloys and promote the “green, safe, life-extending and smart” anti-corrosion technology and expand the application range of Mg and its alloys. High-quality Original Research and Review articles in this field are all welcome for submission to this Research Topic. Research interests include but are not limited to the following areas: • Corrosion behaviors and mechanisms • Surface treatment technology • Biodegradable medical applications • High-temperature oxidation • Inhibitors for Mg and its alloys • New monitoring, evaluation, simulation, and prediction methods

Author : Guang-Ling Song
Publisher : Elsevier
Page : 584 pages
File Size : 53,6 Mb
Release : 2013-02-22
Category : Technology & Engineering
ISBN : 9780857098962

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Corrosion Prevention of Magnesium Alloys by Guang-Ling Song Pdf

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

Author : Viswanathan S. Saji,T. S. N. Sankara Narayanan,Xiaobo Chen
Publisher : Springer Nature
Page : 577 pages
File Size : 49,6 Mb
Release : 2022-02-01
Category : Technology & Engineering
ISBN : 9783030899769

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Conversion Coatings for Magnesium and its Alloys by Viswanathan S. Saji,T. S. N. Sankara Narayanan,Xiaobo Chen Pdf

This book covers fundamentals and recent advancements on conversion coatings for magnesium and its alloys. The contents are presented in two sections, respectively dealing with chemical and electrochemical conversion coatings. The chemical conversion coating section is further subdivided into inorganic conversion coatings, organic conversion coatings and advanced approaches/coatings. The section on electrochemical conversion coatings spans from fundamentals to state-of-the-art progress on electrochemical anodization and plasma electrolytic oxidation of magnesium and its alloys.

Author : G.S. Cole
Publisher : Elsevier Inc. Chapters
Page : 582 pages
File Size : 49,9 Mb
Release : 2013-02-22
Category : Technology & Engineering
ISBN : 9780128089576

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Corrosion prevention of magnesium alloys by G.S. Cole Pdf

This chapter discusses magnesium corrosion with particular reference to how magnesium automotive components, exposed to the automotive corrosion environment, can be protected and provide durable function. The chapter introduces the four types of corrosion that occur with automotive magnesium alloy components. The major focus is on the galvanic events associated with manufacturing and fastening between magnesium components and the steel/aluminum structures used in automotive construction. Examples of new applications, taken from the literature, are discussed with details of the protective modalities that were developed to ensure long-term vehicle durability.

Author : Frank Czerwinski
Publisher : BoD – Books on Demand
Page : 360 pages
File Size : 46,8 Mb
Release : 2011-01-14
Category : Technology & Engineering
ISBN : 9789533079721

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Magnesium Alloys by Frank Czerwinski Pdf

A resistance of magnesium alloys to surface degradation is paramount for their applications in automotive, aerospace, consumer electronics and general-purpose markets. An emphasis of this book is on oxidation, corrosion and surface modifications, designed to enhance the alloy surface stability. It covers a nature of oxides grown at elevated temperatures and oxidation characteristics of selected alloys along with elements of general and electrochemical corrosion. Medical applications are considered that explore bio-compatibility of magnesium alloys. Also techniques of surface modifications, designed to improve not only corrosion resistance but also corrosion fatigue, wear and other behaviors, are described. The book represents a valuable resource for scientists and engineers from academia and industry.

Author : G.-L. Song
Publisher : Elsevier Inc. Chapters
Page : 582 pages
File Size : 43,5 Mb
Release : 2013-02-22
Category : Technology & Engineering
ISBN : 9780128089552

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Corrosion prevention of magnesium alloys by G.-L. Song Pdf

A thin E-coating can be rapidly deposited on the surface of a Mg alloy in a cathodic E-coating bath without applying any current or potential. The selectively self-deposited coating results from the high surface alkalinity of Mg. The ‘electroless’ E-coating pre-film can offer adequate corrosion protection for Mg alloys. The stability of the film can be further improved significantly after curing. The coating can be either a temporary or permanent layer. It may also be used to pre-treat a Mg alloy surface for a normal E-coating or powder coating. Such a simple dipping step can even seal porous phosphating or anodizing coatings on Mg alloys.

Author : S.A. Salman,M. Okido
Publisher : Elsevier Inc. Chapters
Page : 582 pages
File Size : 53,6 Mb
Release : 2013-02-22
Category : Technology & Engineering
ISBN : 9780128089477

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Corrosion prevention of magnesium alloys by S.A. Salman,M. Okido Pdf

Anodizing is one of the most widely used surface treatments for magnesium and its alloys. In this electrolytic oxidation process, the surface of a metal is converted to an anodic oxide/hydroxide film with desirable protective, decorative or functional properties. This chapter describes the fundamentals of anodizing treatment, with an emphasis on the difference between magnesium anodizing and aluminum anodizing. The chapter then discusses the most widely used commercial anodic treatments and describes how the treatment conditions affect the corrosion resistance and the physical and mechanical properties of the anodic coating that forms on magnesium alloys. A critical review of recent patents and advances in the anodizing of magnesium is given. After reviewing the literature, the chapter explains how surface treatment can lead to more widespread use of magnesium alloys in a range of industrial applications.

Author : Waldemar Alfredo Monteiro
Publisher : BoD – Books on Demand
Page : 140 pages
File Size : 44,9 Mb
Release : 2011-09-12
Category : Technology & Engineering
ISBN : 9789533073910

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Special Issues on Magnesium Alloys by Waldemar Alfredo Monteiro Pdf

Magnesium is the lightest of all the metals and the sixth most abundant on Earth. Magnesium is ductile and the most machinable of all the metals. Magnesium alloy developments have traditionally been driven by requirements for lightweight materials to operate under increasingly demanding conditions (magnesium alloy castings, wrought products, powder metallurgy components, office equipment, nuclear applications, flares, sacrificial anodes for the protection of other metals, flash photography and tools). The biggest potential market for magnesium alloys is in the automotive industry. In recent years new magnesium alloys have demonstrated a superior corrosion resistance for aerospace and specialty applications. Considering the information above, special issues on magnesium alloys are exposed in this book: casting technology; surface modification of some special Mg alloys; protective carbon coatings on magnesium alloys; fatigue cracking behaviors of cast magnesium alloys and also, magnesium alloys biocompatibility as degradable implant materials.

Author : K. Azumi,H.H. Elsentriecy,J. Tang
Publisher : Elsevier Inc. Chapters
Page : 582 pages
File Size : 53,6 Mb
Release : 2013-02-22
Category : Technology & Engineering
ISBN : 9780128089514

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Corrosion prevention of magnesium alloys by K. Azumi,H.H. Elsentriecy,J. Tang Pdf

Plating on Mg alloys has proved difficult due to their high susceptibility to the degradation reactions such as galvanic corrosion in the plating processes. In this chapter, surface conditioning, activation, electroless- or electroplating methods are discussed from viewpoints of corrosion engineering. Degradation reactions of the Mg substrate in each plating stage are considered to figure out how to suppress degradation of substrate and to achieve uniform deposition of a plating layer. Building up an interface between the substrate and the plating layer is also an important subject to establish enough adhesion strength of the plating layer and low defect density to prohibit corrosion progress of the substrate. Al coating plating on Mg alloys electrodeposited from an ionic liquid bath is also introduced to provide coatings with less-galvanic coupling property with a less-noble Mg substrate.

Author : V.K. Champagne,B. Gabriel,J. Villafuerte
Publisher : Elsevier Inc. Chapters
Page : 582 pages
File Size : 50,8 Mb
Release : 2013-02-22
Category : Technology & Engineering
ISBN : 9780128089545

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Corrosion prevention of magnesium alloys by V.K. Champagne,B. Gabriel,J. Villafuerte Pdf

Magnesium alloys are widely used in aircraft and automotive components because of their inherent light weight compared to other engineering metals. However, premature corrosion is one of the challenges associated with magnesium. In the aerospace industry, many expensive castings cannot be reclaimed adequately because current methods are often inappropriate due to excessive porosity, oxidation and thermal damage. Cold spray is a solid-state coating process that uses a supersonic gas jet to accelerate small particles against a substrate to produce metal bonding by rapid plastic deformation of the impacting particles. Significantly, magnesium components can be repaired, restored and protected by cold spray deposition of pure aluminum which has thus already been specified by some aerospace users as a standard technique for magnesium repair. In this chapter, the state of the art of commercial cold spray technologies for magnesium repair will be discussed, as well as their advantages and limitations compared to traditional thermal processes.

Author : Anonim
Publisher : Unknown
Page : 42 pages
File Size : 51,9 Mb
Release : 1952
Category : Magnesium
ISBN : MINN:31951D03790955B

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Magnesium Coating and Corrosion (including Cathodic Protection) by Anonim Pdf