Download or read book Effects of Irradiation on Ceramics for Fusion reactor Applications written by D. L. Porter and published by . This book was released on 1982 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Irradiation on Ceramics for Fusion reactor Applications written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study, coordinated with efforts of LANL and Grumman Aircraft, was to lay some basic groundwork to study the irradiation effects on the engineering properties of some useful classes of ceramic materials; ANL's efforts were pointed towards multiphase materials (glass ceramics and partially-stabilized zirconias). The materials were irradiated at 400 and 550°C to fast (E> 0.1 MeV) neutron fluences of approx. 2 x 1022n/cm2. Fluorophlogapite mica based glass ceramics (Macor, etc.) were found susceptible to weakening due to void formtion between mica plates. Composition variations within this class of glass ceramics seemed to cause sharp variations in the magnitude of the effect. Lithium silicate glass ceramic (ReX) showed sharp contrasts between the effects of ionization irradiation and displacement damage, neutron irradiation having little effect on the ReX structure while electron irradiation creating lithium silicate vitrification and rapid structural annealing.
Download or read book Effect of Irradiation induced Defects on Fusion Reactor Ceramics written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural, thermal, and electrical properties critical to performance of ceramics in a fusion environment can be profoundly altered by irradiation effects. Neutron damage may cause swelling, reduction of thermal conductivity, increase in dielectric loss, and either reduction or enhancement of strength depending on the crystal structure and defect content of the material. Absorption of ionizing energy inevitably leads to degradation of insulating properties, but these changes can be reduced by alterations in structural or compositional makeup. Assessment of the irradiation response of candidate ceramics Al2O3, MgAl2O4, SiC and Si3N4 shows that each may find use in advanced fusion devices. The present understanding of irradiation-induced defects in ceramics, while far from complete, nevertheless points the way to methods for developing improved materials for fusion applications.
Download or read book Ceramics in Nuclear and Alternative Energy Applications Volume 27 Issue 5 written by Sharon Marra and published by John Wiley & Sons. This book was released on 2009-09-29 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on recent developments and advances of ceramics and ceramic matrix composites for use in fission and fusion reactors, nuclear fuels and alternative energy applications. With the continued increasing demands for energy, nuclear energy has experienced a renewed interest. Recent developments associated with advanced fuel cycles have resulted in new research efforts on nuclear fuel materials. The effects of radiation on the properties of ceramics and ceramic matrix composites are also addressed.
Download or read book Nuclear Science and Technology for Ceramists written by and published by . This book was released on 1967 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of papers is presented which ha * s the purpose of providing an introductory survey of properties involved in the choice and use of ceramic materials in nuclear technology.Topics include:Radiation fields present in nuclear reactors and the features of these fields most important to the development of nuclear materials; Principle physical effects induced in materials by reactor radiation; Solid state effects of radiation damage processes, with examples drawn partially from ceramics; Physical properties of irradiated ceramic materials; Thermodynamics of nonstoichiometry and its applications to nuclear fuels; Problems encountered in the development of nuclear fuels, reactor moderators, and structural materials.
Download or read book Effects of Neutron Irradiation on Ceramics Fiber Reinforced Composites written by A. Kohyama and published by . This book was released on 1992 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ceramic fiber-reinforced composites are expected to be potential candidates as fusion reactor structural materials. Aluminum matrix composites reinforced with carbon (C) or silicon-carbon (SiC) fibers are investigated. The objectives of this investigation are to evaluate the potential of aluminum (Al) matrix composites as low-activation fusion reactor materials and to develop them for fusion applications.
Download or read book Neutron irradiation Effects on SiO2 and SiO2 based Glass Ceramics written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A preliminary data base to assess the radiation-damage resistance of some glass ceramic materials has been gathered. These are rather complex materials, both in structure and composition, but possess many of those properties required for structural, insulator applications in fusion-reactor design. Property measurements were made after fast (E> 0.1 MeV) neutron irradiations of approx. 2.4 x 1022 n/cm2 at 400°C and 550°C. The results have shown general resistance to changes in thermal expansion and most did not eperience severe loss of mechanical integrity. The maximum volume expansion occurred in several of the fluorophlogapite-based glass ceramics (approx. 3.0%). Several observations demonstrated differences between the effects of neutron and electron irradiation; irradiation conditions proptotypic of projected reactor uses need be considered for optimum materials selection.
Download or read book Handbook of Advanced Ceramics written by Toyohiko Yano and published by Elsevier Inc. Chapters. This book was released on 2013-04-11 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Overview of Irradiation Effects Research on Insulating Ceramics written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Insulating ceramics have many uses in fusion reactors. Although various environmental conditions can degrade these materials, the most severe problems lie in the area of irradiation damage. Such damage can be detrimental to dimensional stability, strength, thermal conductivity, and various electrical properties; failure of an insulator can result from deleterious changes in any of these areas. Degradation of electrical properties falls into two categories: permanent effects, and transient effects that occur only when irradiation fluxes are actually impinging on the material. Consequences of irradiation damage can be severe not only for power reactors but for nearer-term machines such as ITER. Fusion reactors will require electrical ceramics to serve as insulators in rf heating systems and neutral beam injectors, diagnostic components, lightly-shielded magnetic coils, and current breaks between metallic structural elements. When these insulators are subjected to radiation fields (neutron, gamma, or ion bombardment) various physical properties can be degraded; these are discussed.
Download or read book Ceramics for Fusion Devices written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ceramics are required for a number of applications in fusion devices, among the most critical of which are magnetic coil insulators, windows for RF heating systems, and structural uses. Radiation effects dominate consideration of candidate materials, although good pre-irradiation properties are a requisite. Materials and components can be optimized by careful control of chemical and microstructural content, and application of brittle material design and testing techniques. Future directions for research and development should include further extension of the data base in the areas of electrical, structural, and thermal properties; establishment of a fission neutron/fusion neutron correlation including transmutation gas effects; and development of new materials tailored to meet the specific needs of fusion reactors.
Download or read book Structural Materials for Generation IV Nuclear Reactors written by Pascal Yvon and published by Woodhead Publishing. This book was released on 2016-08-27 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: Operating at a high level of fuel efficiency, safety, proliferation-resistance, sustainability and cost, generation IV nuclear reactors promise enhanced features to an energy resource which is already seen as an outstanding source of reliable base load power. The performance and reliability of materials when subjected to the higher neutron doses and extremely corrosive higher temperature environments that will be found in generation IV nuclear reactors are essential areas of study, as key considerations for the successful development of generation IV reactors are suitable structural materials for both in-core and out-of-core applications. Structural Materials for Generation IV Nuclear Reactors explores the current state-of-the art in these areas. Part One reviews the materials, requirements and challenges in generation IV systems. Part Two presents the core materials with chapters on irradiation resistant austenitic steels, ODS/FM steels and refractory metals amongst others. Part Three looks at out-of-core materials. Structural Materials for Generation IV Nuclear Reactors is an essential reference text for professional scientists, engineers and postgraduate researchers involved in the development of generation IV nuclear reactors. Introduces the higher neutron doses and extremely corrosive higher temperature environments that will be found in generation IV nuclear reactors and implications for structural materials Contains chapters on the key core and out-of-core materials, from steels to advanced micro-laminates Written by an expert in that particular area
Download or read book The Effects of Reactor Irradiation on Ceramic Materials written by F. J. P. Clarke and published by . This book was released on 1960 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Advanced Ceramics and Composites written by Yashwant Mahajan and published by Springer. This book was released on 2020-11-26 with total page 1527 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook presents an authoritative account of the potential of advanced ceramics and composites in strategic applications, including defense, national security, aerospace, and energy security (especially nuclear energy). It highlights how their unique combination of superior properties such as low density, high strength, high elastic modulus, high hardness, high temperature capability, and excellent chemical and environmental stability are optimized in technologies within these fields. The handbook is organized according to application type. It allows readers to learn about strategies that have been used in different fields and to transfer them to their own. The book addresses a wide variety of ceramics and their composites, including PZT ceramics, carbon nanotubes, aerogels, silica radomes, relaxor ferroelectrics, and many others.
Download or read book Ceramic Matrix Composites written by Narottam P. Bansal and published by John Wiley & Sons. This book was released on 2014-10-27 with total page 725 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive source of information on various aspects of ceramic matrix composites (CMC). It covers ceramic and carbon fibers; the fiber-matrix interface; processing, properties and industrial applications of various CMC systems; architecture, mechanical behavior at room and elevated temperatures, environmental effects and protective coatings, foreign object damage, modeling, life prediction, integration and joining. Each chapter in the book is written by specialists and internationally renowned researchers in the field. This book will provide state-of-the-art information on different aspects of CMCs. The book will be directed to researchers working in industry, academia, and national laboratories with interest and professional competence on CMCs. The book will also be useful to senior year and graduate students pursuing degrees in ceramic science and engineering, materials science and engineering, aeronautical, mechanical, and civil or aerospace engineering. Presents recent advances, new approaches and discusses new issues in the field, such as foreign object damage, life predictions, multiscale modeling based on probabilistic approaches, etc. Caters to the increasing interest in the application of ceramic matrix composites (CMC) materials in areas as diverse as aerospace, transport, energy, nuclear, and environment. CMCs are considered ans enabling technology for advanced aeropropulsion, space propulsion, space power, aerospace vehicles, space structures, as well as nuclear and chemical industries. Offers detailed descriptions of ceramic and carbon fibers; fiber-matrix interface; processing, properties and industrial applications of various CMC systems; architecture, mechanical behavior at room and elevated temperatures, environmental effects and protective coatings, foreign object damage, modeling, life prediction, integration/joining.
Download or read book Proceedings of the Office of Fusion Energy written by and published by . This book was released on 1990 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: A workshop to assess the potential application of ceramic matrix composites (CMCs) for structural applications in fusion reactors was held on May 21--22, 1990, at University of California, Santa Barbara. Participants included individuals familiar with materials and design requirements in fusion reactors, ceramic composite processing and properties and radiation effects. The primary focus was to list the feasibility issues that might limit the application of these materials in fusion reactors. Clear advantages for the use of CMCs are high-temperature operation, which would allow a high-efficiency Rankine cycle, and low activation. Limitations to their use are material costs, fabrication complexity and costs, lack of familiarity with these materials in design, and the lack of data on radiation stability at relevant temperatures and fluences. Fusion-relevant feasibility issues identified at this workshop include: hermetic and vacuum properties related to effects of matrix porosity and matrix microcracking; chemical compatibility with coolant, tritium, and breeder and multiplier materials, radiation effects on compatibility; radiation stability and integrity; and ability to join CMCs in the shop and at the reactor site, radiation stability and integrity of joints. A summary of ongoing CMC radiation programs is also given. It was suggested that a true feasibility assessment of CMCs for fusion structural applications could not be completed without evaluation of a material tailored'' to fusion conditions or at least to radiation stability. It was suggested that a follow-up workshop be held to design a tailored composite after the results of CMC radiation studies are available and the critical feasibility issues are addressed.
Download or read book Effects of Irradiation on Structural Properties of Crystalline Ceramics written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Stability of crystalline ceramic nuclear waste may be degraded by self-irradiation damage. Changes in density, strength, thermal conductivity, and lattice structure are of concern. Structural damage of ceramics under various radiation conditions is discussed and related to possible effects in nuclear waste.
Download or read book Ceramic Materials for Energy Applications IV written by Hua-Tay Lin and published by John Wiley & Sons. This book was released on 2015-02-02 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of 14 papers from The American Ceramic Society’s 38th International Conference on Advanced Ceramics and Composites, held in Daytona Beach, Florida, January 26-31, 2014. This issue includes papers presented in Symposia 6 - Advanced Materials and Technologies for Energy Generation, Conversion, and Rechargeable Energy Storage and Symposium 13 - Advanced Ceramics and Composites for Sustainable Nuclear Energy and Fusion Energy.
