Download or read book Radiation induced Aperiodicity in Irradiated Ceramics written by and published by . This book was released on 1993 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The experimental program is designed to reveal details of the metamict (amorphization, or crystal-to-glass) transformation in irradiated ceramics (silica compounds, less-connected lead phosphates). The silica compounds were amorphized using electrons, neutrons, and ions, while the phosphates were amorphized using ions (primarily) and neutrons. Energy-filtered electron microdiffraction, high-resoltuion transmission electron microscopy, and high-performance liquid-phase chromatography are being used.

Download or read book Radiation induced Aperiodicity in Irradiated Ceramics Progress Report 22 June 1992 1 February 1993 written by and published by . This book was released on 1993 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The experimental program is designed to reveal details of the metamict (amorphization, or crystal-to-glass) transformation in irradiated ceramics (silica compounds, less-connected lead phosphates). The silica compounds were amorphized using electrons, neutrons, and ions, while the phosphates were amorphized using ions (primarily) and neutrons. Energy-filtered electron microdiffraction, high-resoltuion transmission electron microscopy, and high-performance liquid-phase chromatography are being used.

Download or read book Radiation disorder and Aperiodicity in Irradiated Ceramics written by and published by . This book was released on 1992 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: This final technical report documents the accomplishments of the program of research entitled Radiation Disorder and Aperiodicity in Irradiated Ceramics'' for the period June 22, 1989--June 21, 1992. This research forms the latest part on an on-going program, begun at MIT in 1983 under DOE support, which has had as its objectives investigation of the responses in radiation environments of ceramics heavily-irradiated with electrons, neutrons and ions, with potential applications to fusion energy technology and high-level nuclear waste storage. Materials investigated have included SiO2, MgAl2O4, Al23O2--N5, SiC, BeO, LiAlO2, Li2ZrO3, CaTiO3KTaO3 and Ca(Zr, Pu)Ti2O--. The program initially proposed for 1989 had as its major objectives two main thrusts: (1) research on defect aggregation in irradiated non-oxide ceramics, and (2) research on irradiation-induced amorphization of network silicas and phosphates.

Download or read book Radiation disorder and Aperiodicity in Irradiated Ceramics Final Technical Report 22 June 1989 21 June 1992 written by and published by . This book was released on 1992 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: This final technical report documents the accomplishments of the program of research entitled ''Radiation Disorder and Aperiodicity in Irradiated Ceramics'' for the period June 22, 1989--June 21, 1992. This research forms the latest part on an on-going program, begun at MIT in 1983 under DOE support, which has had as its objectives investigation of the responses in radiation environments of ceramics heavily-irradiated with electrons, neutrons and ions, with potential applications to fusion energy technology and high-level nuclear waste storage. Materials investigated have included SiO2, MgAl2O4, Al23O2--N5, SiC, BeO, LiAlO2, Li2ZrO3, CaTiO3KTaO3 and Ca(Zr, Pu)Ti2O--. The program initially proposed for 1989 had as its major objectives two main thrusts: (1) research on defect aggregation in irradiated non-oxide ceramics, and (2) research on irradiation-induced amorphization of network silicas and phosphates.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineered Materials Abstracts written by and published by . This book was released on 1993-10 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1993 with total page 1834 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Table Shewing the Exact Value of the Several Forts of Cane Chairs written by and published by . This book was released on 1689* with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Irradiation Spectrum and Ionization induced Diffusion Effects in Ceramics written by and published by . This book was released on 1997 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are two main components to the irradiation spectrum which need to be considered in radiation effects studies on nonmetals, namely the primary knock-on atom energy spectrum and ionizing radiation. The published low-temperature studies on Al2O3 and MgO suggest that the defect production is nearly independent of the average primary knock-on atom energy, in sharp contrast to the situation for metals. On the other hand, ionizing radiation has been shown to exert a pronounced influence on the microstructural evolution of both semiconductors and insulators under certain conditions. Recent work on the microstructure of ion-irradiated ceramics is summarized, which provides evidence for significant ionization-induced diffusion. Polycrystalline samples of MgO, Al2O3, and MgAl2O4 were irradiated with various ions ranging from 1 MeV H to 4 MeV Zr ions at temperatures between 25 and 650°C. Cross-section transmission electron microscopy was used to investigate the depth-dependent microstructural of the irradiated specimens. Dislocation loop nucleation was effectively suppressed in specimens irradiated with light ions, whereas the growth rate of dislocation loops was enhanced. The sensitivity to irradiation spectrum is attributed to ionization-induced diffusion. The interstitial migration energies in MgAl2O4 and Al2O3 are estimated to be d".4 eV and d".8 eV, respectively for irradiation conditions where ionization-induced diffusion effects are expected to be negligible.

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 Physics of Radiation Effects in Crystals written by R.A. Johnson and published by Elsevier. This book was released on 2012-12-02 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: ``Physics of Radiation Effects in Crystals'' is presented in two parts. The first part covers the general background and theory of radiation effects in crystals, including the theory describing the generation of crystal lattice defects by radiation, the kinetic approach to the study of the disposition of these defects and the effects of the diffusion of these defects on alloy compositions and phases. Specific problems of current interest are treated in the second part and include anisotropic dimensional changes in x-uranium, zirconium and graphite, acceleration of thermal creep in reactor materials, and radiation damage of semiconductors and superconductors.

Download or read book Pyrochlore Ceramics written by Anirban Chowdhury and published by Elsevier. This book was released on 2022-06-09 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: Present-day interest in pyrochlore materials is immense. Academic and industrial researchers working with pyrochlore materials need a fundamental understanding of what pyrochlores are and their potential applications. Pyrochlore Ceramics: Properties, Processing, and Applications provides key knowledge and information needed on pyrochlore materials. With an emphasis on recent research developments, the contents review a broad spectrum of pyrochlore systems, focusing on their structures, their successful synthesis, multifaceted properties, and applications. The book brings all aspects together and presents recent research findings on pyrochlore materials. It will be the definitive text for all researchers who aim to venture into the eclectic world of pyrochlores. In addition, the book will be of interest to researchers who are already working on pyrochlore materials, providing them with novel information on the uncommon virtues of pyrochlore systems. All chapters presented in the book are at the cutting edge of research and have never been assembled in book form before. Any researcher working in related fields will gain not only a historical perspective but also a comprehensive overview of recent developments. The book will be a valuable reference resource for academic and industrial researchers working in ceramics and materials science, mechanical, electronics, and chemical engineering, as well as physical and chemical science. Provides an extensive review of novel pyrochlore material systems Compares different types of pyrochlore materials, including their structure, properties, and performance Describes potential applications

Download or read book Radioactive Waste Management written by and published by . This book was released on 1981 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Clay Science written by and published by Newnes. This book was released on 2013-07-23 with total page 1748 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of the Handbook of Clay Science published in 2006 assembled the scattered literature on the varied and diverse aspects that make up the discipline of clay science. The topics covered range from the fundamental structures (including textures) and properties of clays and clay minerals, through their environmental, health and industrial applications, to their analysis and characterization by modern instrumental techniques. Also included are the clay-microbe interaction, layered double hydroxides, zeolites, cement hydrates, and genesis of clay minerals as well as the history and teaching of clay science. The 2e adds new information from the intervening 6 years and adds some important subjects to make this the most comprehensive and wide-ranging coverage of clay science in one source in the English language. Provides up-to-date, comprehensive information in a single source Covers applications of clays, as well as the instrumental analytical techniques Provides a truly multidisciplinary approach to clay science

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1993-10 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: