Download or read book Metallic Hydrogen Research written by T. J. Burgess and published by . This book was released on 1978 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metallic Hydrogen Research written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical studies predict that molecular hydrogen can be converted to the metallic phase at very high density and pressure. These conditions were achieved by subjecting liquid hydrogen to isentropic compression in a magnetic-flux compression device. Hydrogen became electrically conducting at a density of about 1.06 g/cm3 and a calculated pressure of about 2 Mbar. In the experimental device, a cylindrical liner, on implosion by high explosive, compresses a magnetic flux which in turn isentropically compresses a hydrogen sample; coaxial conical anvils prevent escape of the sample during compression. One anvil contains a coaxial cable that uses alumina ceramic as an insulator; this probe allows continuous measurement of the electrical conductivity of the hydrogen. A flash x-ray radiograph exposed during the experiment records the location of the sample-tube boundaries and permits calculation of the sample density. The theoretical underpinnings of the metallic transition of hydrogen are briefly summarized, and the experimental apparatus and technique, analytical methods, and results are described. 9 figures.
Download or read book The Metal Hydrogen System written by Yuh Fukai and published by Springer Science & Business Media. This book was released on 2006-02-02 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal hydrides are of inestimable importance for the future of hydrogen energy. This unique monograph presents a clear and comprehensive description of the bulk properties of the metal-hydrogen system. The statistical thermodynamics is treated over a very wide range of pressure, temperature and composition. Another prominent feature of the book is its elucidation of the quantum mechanical behavior of interstitial hydrogen atoms, including their states and motion. The important topic of hydrogen interaction with lattice defects and its materials-science implications are also discussed thoroughly. This second edition has been substantially revised and updated.
Download or read book MOLECULAR AND METALLIC HYDROGEN A REPORT PREPARED FOR DEFENSE ADVANCED RESEARCH PROJECTS AGENCY written by Rand Corporation and published by . This book was released on with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen Materials Science and Chemistry of Metal Hydrides written by Michael D. Hampton and published by Springer Science & Business Media. This book was released on 2002-08-31 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of metal hydrides opens up promising avenues for the solution of world energy problems, as well as casting light on the interactions of hydrogen with materials, the role of hydrogen in materials science, and the chemistry of metal hydrides, all of which are discussed in this book in terms that range from a global look at the new vision of energy and how hydrogen fits into that future to reviews such as a look at nickel hydride over the last 40 years. Very specific current research in such areas as hydrogen in materials science discuss properties like superconductivity, diffusion EMF, magnetic properties, physicochemical properties, phase composition, and permeability. Hydrogen can also be used as a processing or alloying agent, and in the synthesis of battery electrodes, composite materials and alloys. The interaction of hydrogen with many metals, composites and alloys offers potential hydrogen storage systems. There is also a discussion of hydrogen sensors.
Download or read book Molecular Hydrogen for Medicine written by Yuh Fukai and published by Springer Nature. This book was released on 2020-11-25 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive account of the current status of molecular hydrogen medicine, a young field that emerged with the discovery that inhalation of hydrogen gas leads to the elimination of harmful reactive oxygen species in rats. Various physiologic effects have since been demonstrated, and possible medical applications identified. Numerous clinical projects have now been undertaken, yielding startling results. Despite this, molecular hydrogen medicine remains underappreciated among the medical community at large. The author aims to rectify this situation by fairly but critically evaluating the potential clinical benefits based on the latest scientific research. In addition, the observed physiological effects of hydrogen gas are considered within the broad context of the evolution of life on earth, offering new perspectives and helping to place molecular hydrogen medicine legitimately within the framework of life sciences. Written in an accessible manner, the book will be of value to students, researchers, clinicians, and the general public.
Download or read book Tomorrow s Energy written by Peter Hoffmann and published by MIT Press. This book was released on 2002-08-23 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: How hydrogen—nonpolluting and easy to produce—could become the fuel of the future. Hydrogen is the quintessential eco-fuel. This invisible, tasteless gas is the most abundant element in the universe. It is the basic building block and fuel of stars and an essential raw material in innumerable biological and chemical processes. As a completely nonpolluting fuel, it may hold the answer to growing environmental concerns about atmospheric accumulation of carbon dioxide and the resultant Greenhouse Effect. In this book Peter Hoffmann describes current research toward a hydrogen-based economy. He presents the history of hydrogen energy and discusses the environmental dangers of continued dependence on fossil fuels. Hydrogen is not an energy source but a carrier that, like electricity, must be manufactured. Today hydrogen is manufactured by "decarbonizing" fossil fuels. In the future it will be derived from water and solar energy and perhaps from "cleaner" versions of nuclear energy. Because it can be made by a variety of methods, Hoffmann argues, it can be easily adapted by different countries and economies. Hoffmann acknowledges the social, political, and economic difficulties in replacing current energy systems with an entirely new one. Although the process of converting to a hydrogen-based economy would be complex, he demonstrates that the environmental and health benefits would far outweigh the costs.
Download or read book Hydrogen Storage Materials written by R. G. Barnes and published by . This book was released on 1988 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ames Laboratory, Iowa, USA
Download or read book Hydrogen Materials Science and Chemistry of Metal Hydrides written by T. Nejat Veziroglu and published by Springer Science & Business Media. This book was released on 2002-10-31 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2001 International Conference «Hydrogen Materials Science and Chemistry of Metal Hydrides» (ICHMS'2001) was held in the picturesque town Alushta (Crimea, Ukraine) on the bank of Black Sea in September 16-22, 2001. In the tradition of the earlier ICHMS conferences, the 7th ICHMS'2001 provided an international forum for the presentation and discussion of the latest research on transition to hydrogen-based energy systems, technologies for hydrogen production, storage, utilization, materials, energy and environmental problems. The aim of ICHMS '200 1 was to provide an overview of the latest information on research and development in the different topics cited above. The representatives from industry, public laboratories, universities and governmental agencies could meet, discuss and present the most recent advances in hydrogen concepts, processes and systems, to evaluate current progress in these areas of investigations and to identify promising research directions for the future. The ICHMS'2001 was the first conference in this series, where a related new important topic of considerable current interest on fullerene-related materials as hydrogen storage was included into the conference program. The hydrogen sorbing properties of newly discovered carbon nanostructural materials inspire hydrogen scientists with optimism. Thus, the ICHMS'2001 conference was unique in bringing together hydrogen and carbon materials researchers and engineers from developed countries of Europe and America, new independent states of FSU and other countries for discussions in advanced materials development and applications.
Download or read book Hydrogen in Metal Systems II written by Frederick A. Lewis and published by Trans Tech Publications Ltd. This book was released on 2000-08-04 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the behaviour of hydrogen in metals is one of the most pressing research tasks in the physical sciences. The embrittling effect of hydrogen in mild steel was recognised from the very beginnings of the Industrial Revolution, and its effects still plague modern alloys during either fabrication or use. At the same time, the tendency of certain alloys to form stable hydrides in a reversible manner holds out the promise of the safe storage of hydrogen in vehicles and therefore the prospect of non-polluting transport and a true 'hydrogen economy'. Researchers in this field will therefore welcome the publication of this 2-volume set, "Hydrogen Metal Systems I & II", which presents comprehensive information and critical data concerning ionic and metallic hydrides; all conveniently based upon a periodic-table layout.
Download or read book The Forever Fuel written by Peter Hoffmann and published by Routledge. This book was released on 2019-07-11 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a world increasingly plagued by pollution, where limited availability of fossil fuels creates international tensions, and where global disaster from proliferating technology lurks on the horizon, the search for alternative synthetic fuels is no longer an idle scientist's dream—it is necessity. Hydrogen—with its vast and ready availability from water, its nearly universal utility, and its inherently benign characteristics—is one of several attractive synthetic fuels being considered for a "post-fossil-fuel" world, and it may well be the miracle fuel of the future. It is of special interest because, technically at least, it is so easily produced and because it produces simple water vapor in the combustion process rather than loading an already burdened environment with more hydrocarbons, carbon dioxide and monoxide, sulfur, particulate matter, and even more exotic pollutants. Journalist Peter Hoffmann describes worldwide scientific work toward a future hydrogen economy, looking at the auspicious prospects of this potential fuel, at its applicability to powering everything from automobiles to airplanes, and at the principles and technologies involved in making hydrogen a viable energy alternative. He examines how—and how soon—nature's simplest element may become available as an energy carrier, as well as the economic conditions that will accompany its introduction and the social impact of "clean" hydrogen energy. The picture he paints of the fuel future is a welcome alternative to the now-common prognostications of impending doom.
Download or read book Molecular and Metallic Hydrogen written by Marvin Ross and published by . This book was released on 1977 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents a comprehensive review and analysis of the published data on metallic hydrogen and a summary of the properties of molecular hydrogen that are required to determine the molecular-to-metallic hydrogen transition pressure. The best available effective interaction potential is utilized in calculating the equation of state for solid molecular hydrogen. The equation of state of metallic hydrogen is determined by four different methods and the possible range of molecular-to-metallic hydrogen is largely responsible for the wide discrepancy in calculations of the transition pressure. Metastability of metallic hydrogen is discussed and the experimental high- pressure research pertinent to the determination of molecular-to-metallic hydrogen transition pressure is reviewed.
Download or read book Experimental Studies of Metallic Hydrogen at Very High Pressures written by and published by . This book was released on 1996 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atomic hydrogen, because of its small mass and large recombination energy, is theoretically the most promising of all chemical propellants. Currently the best existing chemical propellant is the molecular hydrogen-oxygen fuel. Even in the liquid form, because of its low density, these fuels require large storage tanks, which add to the weight of a vehicle. Thus metallic hydrogen has two important advantages: it has a large specific impulse and its density will be more than an order of magnitude larger than that of ambient liquid hydrogen. Together these factors provide enormous advantages in rocket propulsion and are the reason for investigating the feasibility of producing metallic hydrogen in the laboratory. It is now known that to produce the atomic metallic phase by the brute force method of compression of molecular hydrogen, pressures in the range of 2-5 megabars are required. Achieving pressures in the 1- to 2-megabar range, under careful laboratory conditions using diamond anvils, is now fairly routine. With some care, higher pressures have been achieved. jg p7.
Download or read book The Metal Hydrogen System written by Yuh Fukai and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: I think it is expedient here to clearly specify the readership for whom this book is intended. Some readers might infer from the title that this is a data book convenient for occasional reference purposes. Most of the data on the bulk properties and a comprehensive list of publications are indeed compiled here, will be found useful as they are. The primary purpose of the book is, however, and rather to provide a coherent and consistent description of the basic bulk properties of the metal-hydrogen system, ranging from macroscopic properties such as solubilities and phase diagrams to microscopic properties such as atomistic states and diffusion. The emphasis has been placed on the physics of how these properties actually come about. This structure of the book is considered to be useful, and even necessary, not only for physicists but also for researchers interested in the materials-science aspects of the system. Who could have anticipated that the solubility of hydrogen in iron reaches a level as high as [H]/[Fe] ~ 1 under a hydrogen pressure of 10 GPa; who could have anticip ated that the diffusivity of hydrogen in metals increases at low temperatures; who could unravel the mechanism of "cold" fusion (if this indeed exists), without a basic understanding of the metal-hydrogen system? Obviously, these prob lems are not only of academic interest but also have profound technical implications.
Download or read book Metal Hydrogen Systems written by T. Nejat Veziroglu and published by Elsevier. This book was released on 2016-01-22 with total page 739 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal-Hydrogen Systems covers the proceedings of the Miami International Symposium on Metal-Hydrogen Systems. The book presents studies that discuss the possibility of exploiting hydrogen as an alternative energy source through metal-hydrogen systems. The first part of the text covers the general concerns with the system, such as getting and utilizing metal hydrides and developing hydrogen permeable metal membranes for the Li/LiH-process. The subsequent articles cover a much more specialized and specific topics, such as diffusion of hydrogen in metals; interaction of hydrogen with structure; hydride properties, formation, and utilization; and hydrogen storage. The book will be of use to scientists, engineers, and technicians who are involved in the research, development, and implementation of alternative energy technology.
Download or read book Hydrogen in Engineering Metallic Materials written by V. G. Gavriljuk and published by Springer Nature. This book was released on 2022-04-07 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book analyzes the effect of hydrogen on the atomic-level interactions in metals, detailing the corresponding changes in the physical properties of crystal lattice defects, diffusion, and phase transformations in metallic materials as a result of hydrogen loading. It presents a novel derivation of the structure of stacking faults, the mobility of dislocations, and short-range atomic order in hydrogen-infused metallic alloys based on the change in the concentration of free electrons. It reviews the current hypotheses behind hydrogen embrittlement of iron-, nickel, and titanium-based alloys, focusing on the phenomenon of hydrogen-enhanced localized plasticity and taking into account inherent atomic states in the alloys and other effects due to hydrogen loading. Finally, the book analyzes the use of hydrogen as an interim alloying element in the technological processing of titanium alloys, discussing the necessary preconditions for hydrogen-enhanced plasticity of metals. This book is an excellent resource for graduate students, academic researchers, and practicing engineers involved in the development of advanced hydrogen-resistant metallic materials.
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:
