Electrochemical Behaviour of Magnesium Alloys in Aqueous Media PDF Download
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Author: Ethan David
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
The book "Electrochemical Behaviour of Magnesium Alloys in Aqueous Media" by L. Sutha delves into the electrochemical behavior of magnesium alloys in aqueous media, with a particular focus on corrosion. The book covers various aspects related to magnesium alloys, including their composition, anodic dissolution, cathodic reactions, hydrogen evolution, pH, chloride ions, sulfate ions, and corrosion inhibitors. The author discusses different techniques used to study the electrochemical behavior of magnesium alloys, such as polarization curves, potentiodynamic scanning, and electrochemical impedance spectroscopy. Additionally, the book explores the surface morphology, microstructure, crystallographic texture, and mechanical properties of magnesium alloys. The book also covers various topics related to magnesium alloy processing, surface treatments, and corrosion prevention strategies. The author explains different corrosion mechanisms, including intermetallic compounds, intergranular corrosion, pitting corrosion, galvanic corrosion, crevice corrosion, corrosion fatigue, stress corrosion cracking, and hydrogen embrittlement. The book highlights the importance of corrosion testing, including immersion tests, electrochemical tests, and accelerated corrosion tests, in evaluating the electrochemical behavior of magnesium alloys. The author also discusses corrosion modeling and its applications in predicting the corrosion behavior of magnesium alloys in various environments. Furthermore, the book explores the potential applications of magnesium alloys in various fields, including biodegradable implants, biomedical applications, sustainable materials, environmental impact, industrial applications, aerospace industry, and automotive industry. Finally, the book discusses the use of cathodic protection, coatings, and inhibitors to prevent or mitigate the corrosion of magnesium alloys. Overall, the book provides a comprehensive overview of the electrochemical behavior of magnesium alloys in aqueous media and is a valuable resource for researchers, engineers, and students interested in this field.
Author: Ethan David
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
The book "Electrochemical Behaviour of Magnesium Alloys in Aqueous Media" by L. Sutha delves into the electrochemical behavior of magnesium alloys in aqueous media, with a particular focus on corrosion. The book covers various aspects related to magnesium alloys, including their composition, anodic dissolution, cathodic reactions, hydrogen evolution, pH, chloride ions, sulfate ions, and corrosion inhibitors. The author discusses different techniques used to study the electrochemical behavior of magnesium alloys, such as polarization curves, potentiodynamic scanning, and electrochemical impedance spectroscopy. Additionally, the book explores the surface morphology, microstructure, crystallographic texture, and mechanical properties of magnesium alloys. The book also covers various topics related to magnesium alloy processing, surface treatments, and corrosion prevention strategies. The author explains different corrosion mechanisms, including intermetallic compounds, intergranular corrosion, pitting corrosion, galvanic corrosion, crevice corrosion, corrosion fatigue, stress corrosion cracking, and hydrogen embrittlement. The book highlights the importance of corrosion testing, including immersion tests, electrochemical tests, and accelerated corrosion tests, in evaluating the electrochemical behavior of magnesium alloys. The author also discusses corrosion modeling and its applications in predicting the corrosion behavior of magnesium alloys in various environments. Furthermore, the book explores the potential applications of magnesium alloys in various fields, including biodegradable implants, biomedical applications, sustainable materials, environmental impact, industrial applications, aerospace industry, and automotive industry. Finally, the book discusses the use of cathodic protection, coatings, and inhibitors to prevent or mitigate the corrosion of magnesium alloys. Overall, the book provides a comprehensive overview of the electrochemical behavior of magnesium alloys in aqueous media and is a valuable resource for researchers, engineers, and students interested in this field.
Author: G.-L. Song
Publisher: Elsevier Inc. Chapters
ISBN: 0128089407
Category : Technology & Engineering
Languages : en
Pages : 42
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Book Description
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: G L Song
Publisher: Elsevier
ISBN: 0857091417
Category : Technology & Engineering
Languages : en
Pages : 665
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Book Description
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. - Provides a comprehensive account of the corrosion of magnesium alloys covering fundamentals such as the corrosion electrochemistry, activity and passivity - Reviews the metallurgical effect in relation to the corrosion of magnesium alloys, including the role of micro-structure and earth-rare elements - Assesses environmental influences such as atmospheric corrosion, stress corrosion cracking, creep and fatigue behaviour, and galvanic corrosion
Author: Nestor Perez
Publisher: Springer Science & Business Media
ISBN: 1402078609
Category : Science
Languages : en
Pages : 374
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Book Description
Electrochemistry and Corrosion Science is a graduate level text/professional reference that describes the types of corrosion on metallic materials. The focus will be on modeling and engineering approximation schemes that describe the thermodynamics and kinetics of electrochemical systems. The principles of corrosion behavior and metal recovery are succinctly described with the aid of pictures, figures, graphs and schematic models, followed by derivation of equations to quantify relevant parameters. Example problems are included to illustrate the application of electrochemical concepts and mathematics for solving complex corrosion problems. This book differs from others in that the subject matter is organized around the modeling and predicating approaches that are used to determine detrimental and beneficial electrochemical events. Thus, this book will take a more practical approach and make it especially useful as a basic text and reference for professional engineers.
Author: Marta Mohedano
Publisher: MDPI
ISBN: 3036505520
Category : Science
Languages : en
Pages : 172
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Book Description
Plasma electrolytic oxidation (PEO), also known as micro-arc oxidation (MAO), functionalizes surfaces, improving the mechanical, thermal, and corrosion performance of metallic substrates, along with other tailored properties (e.g., biocompatibility, catalysis, antibacterial response, self-lubrication, etc.). The extensive field of applications of this technique ranges from structural components, in particular, in the transport sector, to more advanced fields, such as bioengineering. The present Special Issue covers the latest advances in PEO‐coated light alloys for structural (Al, Mg) and biomedical applications (Ti, Mg), with 10 research papers and 1 review from leading research groups around the world.
Author: José Reyes Flores
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Jiayang Liu
Publisher:
ISBN:
Category : Biomedical materials
Languages : en
Pages : 262
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Book Description
In recent years, magnesium alloys, due to their high strength and biocompatibility, have attracted significant interest in medical applications, such as cardiovascular stents, orthopedic implants, and devices. To overcome the high corrosion rate of magnesium alloys, coatings have been developed on the alloy surface. Most coating methods, such as anodic oxidation, polymer coating and chemical conversion coating, cannot produce satisfactory coating to be used in human body environment. Recent studies demonstrate that micro-arc oxidation (MAO) technique can produce hard, dense, wear-resistant and well-adherent oxide coatings for light metals such as aluminum, magnesium, and titanium. Though there are many previous studies, the understanding of processing conditions on coating performance remains elusive. Moreover, previous tests were done in simulated body fluid. No test has been done in a cell culture medium, which is much closer to human body environment than simulated body fluid. In this study, the effect of MAO processing time (1 minute, 5 minutes, 15 minutes, and 20 minutes) on the electrochemical behaviors of the coating in both conventional simulated body fluid and a cell culture medium has been investigated. Additionally a new electrolyte (12 g/L Na2SiO3, 4 g/L NaF and 4 ml/L C3H8O3) has been used in the MAO coating process. Electrochemical behaviors were measured by performing potentiodynamic polarization and electrochemical impedance spectroscopy tests. In addition to the tests in simulated body fluid, the MAO-coated and uncoated samples were immersed in a cell culture medium to investigate the corrosion behaviors and compare the difference in these two kinds of media. The results show that in the immersion tests in conventional simulated body fluid, the 20-minute MAO coated sample has the best resistance to corrosion due to the largest coating thickness. In contrast, in the cell culture medium, all MAO coated samples demonstrate a similar high corrosion resistance behavior, independent of MAO processing time. This is probably due to the organic passive layers formed on the coating surfaces. Additionally, a preliminary finite element model has been developed to simulate the immersion test of magnesium alloy in simulated body fluid. Comparison between the predicted corrosion current density and experimental data is discussed.
Author: W.-T. Tsai
Publisher: Elsevier Inc. Chapters
ISBN: 0128089539
Category : Technology & Engineering
Languages : en
Pages : 32
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Book Description
To improve the corrosion resistance of magnesium (Mg) alloys, surface modification is applied in an attempt to produce a corrosion resistant barrier. In this chapter, a new method to deposit aluminum (Al) film on a Mg alloy surface is demonstrated. Electrodeposition of Al on AZ91D Mg alloy, using an acidic aluminum chloride–1-ethyl-3-methyl-imidazolium chloride ionic liquid (AlCl3–EMIC), has been shown to be feasible. The existence of Al coating can cause a substantial increase in corrosion resistance, reducing the susceptibility of Mg alloy to aqueous corrosion. The results of electrochemical impedance spectroscopy show that Al coating leads to an increase in the polarization resistance of a bare Mg alloy by one order of magnitude in 3.5wt% NaCl solution. Furthermore, the potentiodynamic polarization results show that Al-coated Mg alloy can be passivated, and a wider passive region with a lower passive current density can be obtained if the Al is electrodeposited at a lower applied current or a low cathodic overpotential. The passivity of the co-deposited Al/Zn film is slightly inferior to that of the pure Al coating.
Author: Frank Czerwinski
Publisher: BoD – Books on Demand
ISBN: 953307972X
Category : Technology & Engineering
Languages : en
Pages : 360
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Book Description
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: X.-B. Chen
Publisher: Elsevier Inc. Chapters
ISBN: 0128089504
Category : Technology & Engineering
Languages : en
Pages : 36
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Book Description
With the exception of a very few applications, the industrial deployment of magnesium alloys requires anti-corrosion coatings. This chapter looks at aqueous electrochemical plating systems (including pretreatment, undercoating, electroplating and electroless plating) and non-aqueous plating systems (including high temperature molten salts and ionic liquids). The performance assessment of various plated coatings upon magnesium alloys is discussed, along with the general pros and cons of plating techniques.
