Modeling the Molar Volume and Electrical Conductivity of Oxide Melts PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Modeling the Molar Volume and Electrical Conductivity of Oxide Melts PDF full book. Access full book title Modeling the Molar Volume and Electrical Conductivity of Oxide Melts by Eric Thibodeau. Download full books in PDF and EPUB format.
Author: Eric Thibodeau
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
"The physical properties of oxide melts are complex functions of temperature and composition. Both the molar volume and electrical conductivity of liquid oxides are strongly dependent on changes in its structure. Two semi-empirical models (molar volume and electrical conductivity) are proposed to reproduce the available experimental data for these physical properties, each as a function of changes in structure. Changes in molten oxide structure are calculated from the Modified Quasichemical Model (MQM) implemented in FactSage using the FToxid database. The molar volume model can reproduce the available experimental data with a high degree of accuracy over all composition and temperature ranges and can provide meaningful extrapolations. The molar volume of each pure oxide was fixed prior to modeling each binary system. Binary systems are modeled empirically with deviations from a linear model introduced as a function of silicate structure. Extrapolation to higher order systems is based on structure with no additional modeling parameters. The electrical conductivity model is based on a Nernst-Einstein formulation considering ionic conduction. Effective diffusivities of each cationic species are modeled as a function of the melt's silicate structure. Additional considerations are made for melts containing iron oxide as electronic conduction, as opposed to ionic conduction, is dominant at higher concentrations. A charge hopping mechanism is assumed. Molar volume can be calculated over all composition ranges of the Li2O-Na2O-K2O-MgO-CaO-FeO-Fe2O3-MnO-PbO-Al2O3-SiO2 system in the fully liquid state. The electrical conductivity model is applicable to the subsystems of the MgO-CaO-FeO-Fe2O3-MnO-PbO-Al2O3-SiO2 system. The models are useful for process modeling in geological, glass-making, and metal producing fields." --
Author: Eric Thibodeau
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
"The physical properties of oxide melts are complex functions of temperature and composition. Both the molar volume and electrical conductivity of liquid oxides are strongly dependent on changes in its structure. Two semi-empirical models (molar volume and electrical conductivity) are proposed to reproduce the available experimental data for these physical properties, each as a function of changes in structure. Changes in molten oxide structure are calculated from the Modified Quasichemical Model (MQM) implemented in FactSage using the FToxid database. The molar volume model can reproduce the available experimental data with a high degree of accuracy over all composition and temperature ranges and can provide meaningful extrapolations. The molar volume of each pure oxide was fixed prior to modeling each binary system. Binary systems are modeled empirically with deviations from a linear model introduced as a function of silicate structure. Extrapolation to higher order systems is based on structure with no additional modeling parameters. The electrical conductivity model is based on a Nernst-Einstein formulation considering ionic conduction. Effective diffusivities of each cationic species are modeled as a function of the melt's silicate structure. Additional considerations are made for melts containing iron oxide as electronic conduction, as opposed to ionic conduction, is dominant at higher concentrations. A charge hopping mechanism is assumed. Molar volume can be calculated over all composition ranges of the Li2O-Na2O-K2O-MgO-CaO-FeO-Fe2O3-MnO-PbO-Al2O3-SiO2 system in the fully liquid state. The electrical conductivity model is applicable to the subsystems of the MgO-CaO-FeO-Fe2O3-MnO-PbO-Al2O3-SiO2 system. The models are useful for process modeling in geological, glass-making, and metal producing fields." --
Author: Vladislav Boronenkov
Publisher: Springer Science & Business Media
ISBN: 364222377X
Category : Science
Languages : en
Pages : 415
Get Book Here
Book Description
This monograph describes mathematical models that enable prediction of phase compositions for various technological processes, as developed on the base of a complex physico-chemical analysis of reaction. It studies thermodynamics and kinetics of specific stages of complex pyrometallurgical processes involving boron, carbon, sulfur, tungsten, phosphorus, and many more, as well as their exposure to all sorts of factors. First and foremost, this enables to optimize processes and technologies at the stage of design, while traditional empirical means of development of new technologies are basically incapable of providing an optimal solution. Simulation results of metals and alloys production, welding and coating technologies allow obtaining materials with pre-given composition, structure and properties in a cost-saving and conscious manner. Moreover, a so-called "inverse problem", i.e., selecting source materials which would ensure the required results, cannot be solved by any other means.
Author: James M Toguri
Publisher: World Scientific
ISBN: 9814496707
Category : Technology & Engineering
Languages : en
Pages : 250
Get Book Here
Book Description
This book is an extended introductory treatise on the atomic scale structure and physicochemical properties of oxide melts (mainly silicates), from both the basic science and applied engineering points of view. It provides current experimental information on the structure of oxide melts and glasses as well as a convenient outline of their various physicochemical properties, including the subject of how structural data can be correlated with their macroscopic properties.The book also includes a fundamental introduction to the beneficial utilization of waste oxides largely arising from metal production around the world. This will be very useful for people working in the fields of metallurgy and environmental science. With more than 300 references, and numerous illustrations and tables, this book is a unique and valuable source of information and guidance for specialists and nonspecialists alike.
Author: Youxue Zahng
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 1501508393
Category : Science
Languages : en
Pages : 1056
Get Book Here
Book Description
Volume 72 of Reviews in Mineralogy and Geochemistry represents an extensive compilation of the material presented by the invited speakers at a short course on Diffusion in Minerals and Melts held prior (December 11-12, 2010) to the Annual fall meeting of the American Geophysical Union in San Francisco, California. The short course was held at the Napa Valley Marriott Hotel and Spa in Napa, California and was sponsored by the Mineralogical Society of America and the Geochemical Society.
Author: Vladimir Danek †
Publisher: Elsevier
ISBN: 0080464963
Category : Science
Languages : en
Pages : 468
Get Book Here
Book Description
Physico-Chemical Analysis of Molten Electrolytes includes selected topics on the measurement and evaluation of physico-chemical properties of molten electrolytes. It describes the features, properties, and experimental measurement of different physico-chemical properties of molten salt systems used as electrolytes for different metal production, metallic layer deposition, as a medium for reactions in molten salts.The physico-chemical properties such as phase equilibria, density (molar volume), enthalpy (calorimetry), surface tension, vapor pressure, electrical conductivity, viscosity, etc. are the most important parameters of electrolytes needed for technological use. For each property the theoretical background, experimental techniques, as well as examples of the latest knowledge and the processing of most important salt systems will be given.The aim of Physico-Chemical Analysis of Molten Electrolytes is not only to present the state of the art on different properties of molten salts systems and their measurement, but also to present the possibilities of modeling molten salt systems, to be able to forecast the properties of an electrolyte mixture from the properties of the pure components in order to avoid experimentally demanding, and in most cases also expensive measurements.This book fills a substantial gap in this field of science. Also documententing the latest research in molten salts chemistry and brings new results and new insights into the study of molten salts systems using the results of X-ray diffraction and XAFS methods, Raman spectroscopy, and NMR measurements. * This book fills a substantial gap in this field of science* Serves as a invaluable reference for all people working in the field of molten salts chemistry* Describes fundamentals of the various properties of molten electrolytes
Author:
Publisher:
ISBN:
Category : Liquid metals
Languages : en
Pages : 636
Get Book Here
Book Description
Author: Bjorn Mysen
Publisher: Elsevier
ISBN: 0080457711
Category : Science
Languages : en
Pages : 561
Get Book Here
Book Description
This book describes the structure-property-composition relationships for silicate glasses and melts of industrial and geological interest. From Antiquity to the 20th century, an introductory chapter presents this subject in a historical perspective. Basic concepts are then discussed in three chapters where attention is paid to the glass transition and its various consequences on melt and glass properties, to the structural and physical differences between amorphous and crystalline silicates, and to the mutual relationships between local order, energetics and physical properties. With pure SiO2 as a starting point, compositions of increasing chemical complexity are successively dealt with in a dozen chapters. The effects of network-modifying cations on structure and properties are first exemplified by alkali and alkaline earth elements. The specific influence of aluminum, iron, titanium, and phosphorus are then reviewed. With water, volatiles in the system COHS, noble gases, and halogens, the effects of volatile components are also described. The last chapter explains how the results obtained on simpler melts can be applied to chemically complex systems. In each chapter, physical and chemical properties are described first and followed by a review of glass and melt structure. When possible, pressure effects are also considered. *From SiO2 to complex silicate compositions, the physical and chemical properties of melts and glasses of geological and industrial interest*Structural characterization of melts and glasses, from ambient to high pressure and temperature*From basic concepts to an advanced level, a consistent description of the structure-property-composition relationships in glasses and melts
Author: Thomas P. Seward
Publisher: Wiley-American Ceramic Society
ISBN:
Category : Science
Languages : en
Pages : 318
Get Book Here
Book Description
This book is the result of a study to develop a high-temperature melt properties database with sufficient comprehensiveness and reliability to allow mathematical modeling of glass melting and forming processes for improved product quality, improved efficiency and lessened environmental impact. The study was initiated by the U.S. glass industry through the National Science Foundation Industry/University Center for Glass Research at Alfred University (CGR) and funded in part by a grant from the U.S. Department of Energy's Industrial Technologies Program.
Author: Daniel R. Neuville
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 1501510932
Category : Technology & Engineering
Languages : en
Pages : 1108
Get Book Here
Book Description
Volume 87 of Reviews in Mineralogy and Geochemistry covers fundamental aspects of the nature of silicate melts and the implications for the systems in which they participate, both technological and natural. The contents of this volume may perhaps best be summarized as structure – properties – dynamics. The volume contains syntheses of short and medium range order, structure-property relationships, and computation-based simulations of melt structure. It continues with analyses of the properties (mechanical, diffusive, thermochemical, redox, nucleation, rheological) of melts. The dynamic behavior of melts in magmatic and volcanic systems, is then treated in the context of their behavior in magma mixing, strain localization, frictional melting, magmatic fragmentation, and hot sintering. Finally, the non-magmatic, extraterrestrial and prehistoric roles of melt and glass are presented in their respective contexts.
Author: Sanjib Bhattacharya
Publisher: Elsevier
ISBN: 0128174595
Category : Technology & Engineering
Languages : en
Pages : 316
Get Book Here
Book Description
Metal Oxide Glass Nanocomposites covers recent developments in metal oxide glass nanocomposites, including a discussion of synthesis methods, properties, characterization methods, and the most promising applications. The book discusses electronic and ionic conduction mechanisms of this materials system with an eye towards device applications. It also provides a comprehensive review of the material’s useful properties and structure at a technical level that is appropriate for materials scientists and engineers, physicists and chemists. Includes a comprehensive overview of metal oxide glass nanocomposite, including its optical properties, magnetic properties, electronic transport, dielectric properties, mechanical properties, and more Reviews a wide range of the most relevant applications, such as photonic, biomedical, electronic and thermoelectric Considers the advantages and disadvantages of metal oxide glass nanocomposites for utilization in key applications
