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Corrosion Sous Contrainte Des Aciers Au C Mn En Milieu Methanol
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Book Synopsis Corrosion sous contrainte des aciers au C-Mn en milieu méthanol by : Elodie Risson
Download or read book Corrosion sous contrainte des aciers au C-Mn en milieu méthanol written by Elodie Risson and published by . This book was released on 2002 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le travail s'inscrit dans l'étude d'un cas de fissuration par CSC rencontré sur des citernes-propane en acier au C-Mn. Les fissures de CSC sont localisées dans une zone baignée par le méthanol préalablement introduit pour piéger l'eau résiduelle et éviter les phénomènes de givrage de gaz. L'objectif de cette étude est de déterminer les mécanismes d'amorçage et de propagation des fissures engagés dans l'endommagement par CSC pour la définition d'un test de classification des aciers vis à vis de leur résistance à la CSC en milieu méthanol. Nous nous sommes intéressés dans un premier temps au comportement électrochimique des aciers en milieu méthanol pollué par de faibles teneurs en eau et acide formique. L'étude montre qu'en milieu aéré, l'acier présente une passivité médiocre et favorable au développement d'une corrosion localisée. Nous montrons ensuite que l'amorçage des fissures à potentiel libre est basé sur un mécanisme de dissolution anodique. La localisation de la dissolution anodique, à travers des effets d'interactions corrosion-déformation, conduit à la formation d'un embryon de fissure et permet à l'hydrogène lié à la réaction cathodique couplée, de pénétrer de manière très localisée dans le matériau. L'hydrogène, au travers des effets d'interactions hydrogène/plasticité est quant à lui responsable de l'avancée de la fissure. A partir de l'étude des mécanismes de fissuration réalisée sur différentes microstructures d'aciers au C-Mn, nous avons défini le rôle des carbures et des phases carburées dans l'endommagement par CSC et préconisé l'emploi de microstructures présentant une meilleure résistance à la CSC. Sur la base de la compréhension des micromécanismes de fissuration, nous avons défini un test de classification des aciers. Ce test est basé sur l'utilisation d'éprouvettes micro-entaillées sollicitées sous contrainte cyclique en dessous de la limite d'élasticité et permet de reproduire de manière accélérée l'endommagement obtenu sur le terrain.
Book Synopsis Modelling Aqueous Corrosion by : Kenneth R. Threthewey
Download or read book Modelling Aqueous Corrosion written by Kenneth R. Threthewey and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt: All significant studies agree that aqueous corrosion continues to cost nations dearly in almost every area of technological endeavour. Over the past ten years, microcomputers have facilitated an explosion in the power of modelling as a technique in science and engineering. In corrosion they have enabled better understanding of polarization curves, they have transformed the scope of electrochemical impedance measurements and they have placed a large range of electrochemistry at the fingertips of the corrosion scientist. This book focuses on the models, rather than the computing, which have been made possible during the past decade. Aimed at all those with an interest in corrosion and its control, the book draws together the range of new modelling strands, suggests new avenues of approach and generates further momentum for improvements to corrosion management, whether by increased understanding of atomistic processes or by control of large plant.
Book Synopsis Copper in Iron and Steel by : L. McDonald Schetky
Download or read book Copper in Iron and Steel written by L. McDonald Schetky and published by John Wiley & Sons. This book was released on 1982-12-27 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first work on the subject in thirty years. Presents current methods and technologies for utilizing copper in the manufacture of steel alloys, copper containing steel, and iron products. Includes coverage of new techniques for producing powdered metal products, high-strength steels, and corrosion resistant steels. Chapters contributed by internationally recognized experts.
Book Synopsis Modern Surface Organometallic Chemistry by : Jean-Marie Basset
Download or read book Modern Surface Organometallic Chemistry written by Jean-Marie Basset and published by John Wiley & Sons. This book was released on 2009-07-10 with total page 725 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering everything from the basics to recent applications, this monograph represents an advanced overview of the field. Edited by internationally acclaimed experts respected throughout the community, the book is clearly divided into sections on fundamental and applied surface organometallic chemistry. Backed by numerous examples from the recent literature, this is a key reference for all chemists.
Book Synopsis Flexoelectricity in Liquid Crystals by : Agnes Buka
Download or read book Flexoelectricity in Liquid Crystals written by Agnes Buka and published by World Scientific. This book was released on 2013 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.
Book Synopsis Stress-corrosion Cracking of Aluminum Alloys by : F. H. Haynie
Download or read book Stress-corrosion Cracking of Aluminum Alloys written by F. H. Haynie and published by . This book was released on 1966 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report deals with the stress-corrosion cracking of aluminum alloys, and it represents an effort by DMIC to expand on the information contained in DMIC Memorandum 202, 'Stress-Corrosion Cracking of Aluminum Alloys', dated February 15, 1965. DMIC Report 228 begins by presenting a comprehensive definition of stress-corrosion cracking. This is followed by sections dealing with (1) the historical development and growth in awareness of the problem, (2) the mechanisms involved, and (3) the theory of stress-corrosion cracking. A section on experimental techniques is presented. These techniques include test methods used to determine the susceptibility of alloys to stress-corrosion cracking, as well as more refined methods of studying the fundamental mechanisms of the problem. Different evaluation methods, applicable to obtaining the different objectives of stress-corrosion testing, are also presented. All of the foregoing serve as background to the sections on stress-corrosion-cracking behavior of aluminum alloys and preventive measures. (Author).
Book Synopsis Stress-corrosion Cracking of Titanium by :
Download or read book Stress-corrosion Cracking of Titanium written by and published by . This book was released on 1966 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ZnO Thin Films written by Paolo Mele and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zinc oxide (ZnO) is an n-type semiconductor with versatile applications such as optical devices in ultraviolet region, piezoelectric transducers, transparent electrode for solar cells and gas sensors. This book "ZnO Thin Films: Properties, Performance and Applications" gives a deep insight in the intriguing science of zinc oxide thin films. It is devoted to cover the most recent advances and reviews the state of the art of ZnO thin films applications involving energy harvesting, microelectronics, magnetic devices, photocatalysis, photovoltaics, optics, thermoelectricity, piezoelectricity, electrochemistry, temperature sensing. It serves as a fundamental information source on the techniques and methodologies involved in zinc oxide thin films growth, characterization, post-deposition plasma treatments and device processing. This book will be invaluable to the experts to consolidate their knowledge and provide insight and inspiration to beginners wishing to learn about zinc oxide thin films.
Book Synopsis Brittle Failure of Rock Materials by : G.E. Andreev
Download or read book Brittle Failure of Rock Materials written by G.E. Andreev and published by CRC Press. This book was released on 1995-01-01 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text comprises different basic aspects of brittle failure for rocks. It considers classical and contemporary models, as well as failure patterns under different loading schemes.
Book Synopsis Nonlinear Optical Materials by : Jerome V. Moloney
Download or read book Nonlinear Optical Materials written by Jerome V. Moloney and published by Springer Science & Business Media. This book was released on 1998-08-13 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical methods play a significant role in the rapidly growing field of nonlinear optical materials. This volume discusses a number of successful or promising contributions. The overall theme of this volume is twofold: (1) the challenges faced in computing and optimizing nonlinear optical material properties; and (2) the exploitation of these properties in important areas of application. These include the design of optical amplifiers and lasers, as well as novel optical switches. Research topics in this volume include how to exploit the magnetooptic effect, how to work with the nonlinear optical response of materials, how to predict laser-induced breakdown in efficient optical devices, and how to handle electron cloud distortion in femtosecond processes.
Book Synopsis Underground Disposal of Radioactive Wastes by : International Atomic Energy Agency
Download or read book Underground Disposal of Radioactive Wastes written by International Atomic Energy Agency and published by . This book was released on 1981 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acousto-Ultrasonics written by J. Duke and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Finding and slzmg cracks and other crack-like discontinuities has been the center of attention for scientists and engineers developing and using nondestructive evaluation (NDE) technology. However, with advanced mate rials being "engineered" and used in critical structural components, a new for NDE has emerged. Whereas many traditional engineering materi challenge als fail due to the initiation and self-similar propagation of a crack, reinforced composite materials degrade and fail in a manner more analogously to the collapse of a structure. Consequently the NDE of such materials involves assessing the combined effect of the material's damaged condition rather than identifying and sizing single critical imperfection. In 1979 Alex Vary, seeking to address the challenge confronting the NDE of advanced fiber reinforced composite materials began work on a new method of materials characterization. Focusing on the problem of evaluating graphite fiber reinforcedl epoxy laminated plates; Vary used a piezoelectric transducer to excite a mechanical disturbance in a plate and, with a sensi tive piezoelectric transducer monitored the disturbance on the same surface of the plate. (Placing the transducers on the same surface was primarily for practical purpose but their displacement in the direction of anticipated service load was of fundamental significance!) To quantify this observation, he counted the number of excursions, of the resulting electrical signal, above a arbitrary voltage threshold; a procedure frequently used for acoustic emission signal analysis.
Book Synopsis Urban Environment Expert Contributions by : Commission of the European Communities
Download or read book Urban Environment Expert Contributions written by Commission of the European Communities and published by . This book was released on 1990 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
