Download or read book Hydrogen Entry and Action in Metals written by Malcolm Allan Fullenwider and published by Pergamon. This book was released on 1983 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Perspectives in Hydrogen in Metals written by M. F. Ashby and published by Elsevier. This book was released on 2017-09-21 with total page 773 pages. Available in PDF, EPUB and Kindle. Book excerpt: Perspectives in Hydrogen in Metals: Collected Papers on the Effect of Hydrogen on the Properties of Metals and Alloys discusses the advancement in the understanding of the effects of hydrogen on the physical and mechanical properties of metals and alloys. The title first covers solubility and other thermodynamic properties, and then proceeds to tackling diffusivity. Next, the selection discusses the trapping of hydrogen by defects and hydride formation. The text also talks about hydrogen in amorphous metals, along with the effect of hydrogen on plastic deformation. The last chapter covers hydrogen embrittlement. The book will be of great use chemists, metallurgists, and materials engineers.
Download or read book Hydrogen in Metals Application oriented properties written by G. Alefeld and published by . This book was released on 1978 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen in Steel written by Michael Smialowski and published by Elsevier. This book was released on 2014-05-09 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrogen in Steel: Effect of Hydrogen on Iron and Steel During Production, Fabrication, and Use focuses on the effect of hydrogen on iron and steel during production, fabrication, and use. Topics covered range from the solubility of hydrogen in iron and ferrous alloys to the diffusion and permeation of hydrogen through iron and steel. Electrochemical problems related to the ability of iron to absorb hydrogen from aqueous solutions are also considered. Comprised of 19 chapters, this book begins with a detailed treatment of the nature and properties of metal-hydrogen systems, paying particular attention to the behavior of hydrogen in the bulk of the metal phase and the mechanism of reactions between metals and hydrogen or hydrogen-producing compounds. The reader is then introduced to the solubility of hydrogen in iron and ferrous alloys as well as the nature of the final product of the hydrogen-iron interaction. Subsequent chapters deal with dimensional changes and stresses produced in steel by cathodically evolved hydrogen; the effects of hydrogen on the physical, mechanical, and chemical properties of iron and steel; influence of welding on hydrogen; and sulfide corrosion cracking of steel. The effects of pickling on steel are also examined, along with the blistering and embrittlement caused by hydrogen on the base metal during electroplating. This book will be of value to students and practitioners in the field of physical chemistry.
Download or read book Corrosion of Metals and Hydrogen Related Phenomena written by J. Flis and published by Elsevier. This book was released on 2016-01-11 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is estimated that about 40% of the annual production of metals is used to repair or replace materials damaged by corrosion. Corrosion causes waste of the natural material and energy resources, it creates serious materials problems for many technologies and adversely affects almost every area of engineering. The use of metals in various aggressive environments has resulted in an extremely wide diversity of corrosion problems. This book presents a collection of concise reviews written by experts in the field on selected topics of metallic corrosion and on some aspects of interaction of hydrogen with metals. A comprehensive range of problems is examined including localized corrosion, high temperature corrosion in liquid metals and molten salts, transport control in corrosion processes, entry of hydrogen into metals, hydrogen embrittlement, and hydrogen reactions with metals. The variety of topics covered in the book will provide corrosion scientists, engineers, university lecturers and students alike with an interdisciplinary approach to solving problems of materials degradation and surface processes in metal corrosion.
Download or read book Hydrogen Effects in Materials written by Anthony W. Thompson and published by John Wiley & Sons. This book was released on 2013-09-27 with total page 1090 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Fifth International Conference on the Effect of Hydrogen on the Behavior of Materials sponsored by the Structural Materials Division (SMD) Mechanical Metallurgy and Corrosion & Environmental Effects Committees of The Minerals, Metals & Materials Society held at Jackson Lake Lodge, Moran, Wyoming, September 11-14, 1994.
Download or read book Electrochemistry of Insertion Materials for Hydrogen and Lithium written by Su-Il Pyun and published by Springer Science & Business Media. This book was released on 2012-08-22 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: The understanding of hydrogen/lithium insertion phenomena is of great importance for the development of the next generation of functional electrochemical devices such as rechargeable batteries, electrochromic devices, and fuel cells. This volume introduces a variety of viable electrochemical methods to identify reaction mechanisms and evaluate relevant kinetic properties of insertion electrodes. The authors also outline various ways to analyze anomalous behaviour of hydrogen/lithium transport through insertion electrodes.
Download or read book Hydrogen Effects in Metals written by Irving Melvin Bernstein and published by . This book was released on 1981 with total page 1418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Hydrogen Evolution and Entry Into Metals for the Discharge Recombination Process written by Howard W. Pickering and published by . This book was released on 1989 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: A mechanistic model has been developed which for the first time considers the effect of hydrogen entry into a metal on the kinetics of the hydrogen evolution reaction (h.e.r.). The model enables computation of: 1) the hydrogen surface coverage and surface concentration; 2) the hydrogen adsorption, absorption, discharge and recombination rate constants; and 3) the h.e.r. coverage-dependent transfer coefficient, alpha and the exchange current density io, from a knowledge of the steady state hydrogen permeation current, cathodic charging current, hydrogen overvoltage and hydrogen diffusivity. The model predicts a linear relationship between permeation flux and square-root of the hydrogen recombination flux and provides an analytical method to determine the cathodic potential range for operation of a coupled discharge-recombination mechanism of the h.e.r. With modifications the model can treat permeation data for which 1) the mechanics of the discharge step involve a (proposed) selvedge reaction; and 2) surface hydrogen coverages are relatively high as in the presence of poisons (e.g., H2S or As2O3). Some of the existing literature data for hydrogen permeation in iron and nickel in acid and alkaline solutions are successfully analyzed. Keywords: Electrochemistry; Hydrogen permeation model; Surface coverage; H.E.R. rate constants; Selvedge reaction; Exchange current; Hydrogen overvoltage; Hydrogen absorption and adsorption rate constants. (edc).
Download or read book Hydrogen Embrittlement written by Louis Raymond and published by ASTM International. This book was released on 1988 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen Embrittlement of Steel written by Robert Walton Buzzard and published by . This book was released on 1951 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Note National Advisory Committee for Aeronautics written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1952 with total page 986 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Prediction of Hydrogen Entry and Permeation in Metals and Alloys written by and published by . This book was released on 1993 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Grant focused on the investigation of the factors which affect hydrogen entry and permeation into metals/alloys that by themselves or in combination with other materials are used under conditions for which hydrogen embrittlement and cracking are a major concern. Factors that affect H entry include a broad range of metallurgical, environmental and interface properties such as adsorption, surface segregation, surface films and recesses in the surface. Research during this grant period focused on understanding how these parameters control hydrogen entry. The specific investigations included both aqueous and gas phase charging of hydrogen, utilizing primarily electrochemical techniques, in particular hydrogen permeation with the IPZ model, and microscopic methods in the case of aqueous phase charging, and ultra high resolution scanning tunneling microscopy (STM) in the case of gas phase charging.
Download or read book Hydrogen Movement in Steel written by Ellis E. Fletcher and published by . This book was released on 1965 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report discusses the ways in which H2 enters steels, how it moves through steel, and methods whereby it may be removed from steel. The solubility of H2 is important in understanding other aspects of the behavior of H2 in steel and such aspects of solubility as preferred lattice sites, lattice expansion, measurements of solubility, and estimates of equilibrium H2 pressure in steel are discussed. The permeation of H2 through steel consisting of interactions at both the entry and exit surfaces of the metal as well as diffusion through the bulk metal is discussed. The various possibilities of H2 entry by corrosion processes, electrochemical processes, and other means are considered as well as factors which influence the rate of H2 removal from iron and steel. (Author).
Download or read book Electronic Structure and Properties of Hydrogen in Metals written by C.B. Satterthwaite and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrogen is the smallest impurity atom that can be implanted in a metallic host. Its small mass and strong interaction with the host electrons and nuclei are responsible for many anomalous and interesting solid state effects. In addition, hydrogen in metals gives rise to a number of technological problems such as hydrogen embrittlement, hydrogen storage, radiation hardening, first wall problems associated with nuclear fusion reactors, and degradation of the fuel cladding in fission reactors. Both the fundamental effects and applied problems have stimulated a great deal of inter est in the study of metal hydrogen systems in recent years. This is evident from a growing list of publications as well as several international conferences held in this field during the past decade. It is clear that a fundamental understanding of these problems re quires a firm knowledge of the basic interactions between hydrogen, host metal atoms, intrinsic lattice defects and electrons. This understanding is made particularly difficult by hyrogen's small mass and by the large lattice distortions that accompany the hydrogenation process. The purpose of the "International Symposium on the Electronic Structure and Properties of Hydrogen in Metals" held in Richmond, Virginia, March 4-6, 1982 was to increase our fundamental under standing of hydrogen in metals. Such knowledge is essential in solving technologically important questions. The symposium con sisted of twenty-two invited papers and seventy-two contributed poster presentations and attracted nearly 150 participants from thirteen countries. The proceedings of this symposium constitute this book.
Download or read book Prediction of Hydrogen Entry and Permeation in Metals and Alloys written by and published by . This book was released on 1995 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes results of the past year on our continuing experiments directed to the problem of hydrogen entry and degradation of materials both of planar surfaces and for the more complicated recessed surface. For the planar surface the hydrogen permeation and scanning tunneling microscopy (STM) techniques were used, and for the recessed surface the study used the hydrogen permeation technique and a microscopy/electrochemical probe technique. Microstructural effects and the role of microbes are also under study. In aqueous solutions both IR drop and acidification within recesses in iron surfaces were found to enhance proton reduction and hydrogen absorption. In addition, it was found that flat, smooth surfaces can form or develop recesses as a result of corrosion or other reasons, e.g., grain boundary grooves that form during corrosion of Cr-depleted alloy in sensitized stainless steel. These recesses were found to be just as prone to proton discharge and hydrogen absorption as pre-existing recesses. Distributions of anodic and cathodic reaction sites were analyzed within a propagating crack under cathodic protection conditions using an IR based model. Results are presented of STM studies of hydrogen adsorption from the gas phase on silicon. jg.
Download or read book Hydrogen Diffusion in Metals written by D. J. Fisher and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to its small size, the hydrogen atom is, wanted or unwanted, an ubiquitous diffusant in many metallic systems. It has long been known for its harmful effect upon mild steel sheet; the deleterious phenomenon of hydrogen-embrittlement having been recognized since the early days of the industrial revolution. Its behavior in some metals is further complicated by its tendency to form hydrides with the metal, or with various non-metallic impurities. The ability of some metals and alloys to store large quantities of hydrogen - first recognized in the 19th century - is another complicating factor. The complexity of metal-hydrogen behavior was undoubtedly also the cause of the mistaken 'cold fusion' claims of the late 1980s. The present issue comprises a compilation of hydrogen diffusion and permeation data in metals. These data are believed to be 'pure': that is, free from the interfering effects of hydride formation, etc. The almost 600 entries, 201 tables and 41 figures cover the period from 1966 to 2013. These are supplemented by an original review, by T.B.Flanagan of the University of Vermont, which has as its subject, The Role of the Thermodynamic Factor in Hydrogen Diffusion in Metal and Alloy Membranes.
