Properties of Glass Forming Melts

  • Filename: properties-of-glass-forming-melts.
  • ISBN: 9781420027310
  • Release Date: 2005-05-12
  • Number of pages: 512
  • Author: David Pye
  • Publisher: CRC Press

This book presents state-of-the-art information concerning properties and processes involved in glass melts. Based upon contributions by renowned authors and scientists working with glass melt systems, Properties of Glass-Forming Melts is an excellent compilation of the current knowledge on property data, mechanisms, measurement techniques, and structure-related properties of glass-forming. The authors provide in-depth analyses of such topics as glass-melt density, thermal expansion, heat conductivity, and chemical activities. Each chapter combines fundamental concepts with a compilation of recent and reliable data that is essential in the modeling of glass melting, fining, conditioning, and forming. The book first discusses the glass-forming melts, thermodynamics, transport properties, and redox effects of glass. This provides a sound basis to the analysis of important properties of glass melts such as viscosity, surface tension, density, and heat capacity as well as more generalized subjects of heat transfer and gas solubility. A chapter on electrical properties provides a solid foundation for understanding glass melting via direct Joule heating of the melt. The examination of the corrosive nature of molten glasses will be of great interest to tank designers and operators. This unique handbook concludes with an overview of nuclear waste vitrification, a growing discipline that relies on current data and encourages research in glass melts. This book is an ideal starting place for future-generation glass scientists and an effective reference for scientists who require data on the behavior of viscous melts and for glass technologists who apply mathematical models simulating the melting and forming processes. Properties of Glass-Forming Melts offers a one-of-a-kind and valuable source of reliable data and insight by those with firsthand knowledge and experiences in this field.

Introduction to Glass Science and Technology

  • Filename: introduction-to-glass-science-and-technology.
  • ISBN: 0854046399
  • Release Date: 2005-01-01
  • Number of pages: 291
  • Author: J. E. Shelby
  • Publisher: Royal Society of Chemistry

An Introduction to Glass Science and Technology presents the fundamental topics in glass science and technology including glass formation, crystallisation and phase separation. A detailed discussion of glass structure models with emphasis on the oxygen balance model is also presented. This expanded second edition also includes new chapters on the compositions and properties of commercial glasses and thermal analysis of glasses and melts. Exercises are included at the end of the chapters. This introductory text is ideal for undergraduates in materials science, ceramics or inorganic chemistry. It will also be useful to the engineer or scientist seeking basic knowledge of the formation, properties and production of glass.

Glasses and the Glass Transition

  • Filename: glasses-and-the-glass-transition.
  • ISBN: 9783527636549
  • Release Date: 2011-04-27
  • Number of pages: 428
  • Author: Ivan S. Gutzow
  • Publisher: John Wiley & Sons

Written by renowned researchers in the field, this up-to-date treatise fills the gap for a high-level work discussing current materials and processes. It covers all the steps involved, from vitrification, relaxation and viscosity, right up to the prediction of glass properties, paving the way for improved methods and applications. For solid state physicists and chemists, materials scientists, and those working in the ceramics industry. With a preface by L. David Pye and a foreword by Edgar D. Zanotto

The Vitreous State

  • Filename: the-vitreous-state.
  • ISBN: 9783642346330
  • Release Date: 2013-04-12
  • Number of pages: 553
  • Author: Ivan S. Gutzow
  • Publisher: Springer Science & Business Media

This book summarizes the experimental evidence and modern classical and theoretical approaches in understanding the vitreous state, from structural problems, over equilibrium and non-equilibrium thermodynamics, to statistical physics. Glasses, and especially silicate glasses, are only the best known representatives of this particular physical state of matter. Other typical representatives include organic polymer glasses, and many other easily vitrifying organic and inorganic substances, technically important materials, amidst them vitreous water and vitrified aqueous solutions, and also many metallic alloy systems. Some of these systems only form glasses under particular conditions, e.g. through ultra-rapid cooling. This book describes the properties and the formation of both every-day technical glasses and especially of such more exotic forms of vitreous matter. It is a unique source of knowledge and new ideas for materials scientists, engineers and researchers working on condensed matter. The new edition emphasizes latest experimental findings and modern theories, explaining the kinetics of glass formation, the relaxation and stabilization of glasses and their crystallization in terms of new models, derived from the framework of the thermodynamics of irreversible processes. It shows how the properties of common technical glasses, window glass, or the vitreous ice kernel of comets can be used to develop a new understanding of the existence of matter in various, unusual forms. The described theories can even find application for the description of lasers and interesting unusual processes in the universe.

Silica Glass and Binary Silicate Glasses

  • Filename: silica-glass-and-binary-silicate-glasses.
  • ISBN: 9780444598967
  • Release Date: 2012-12-02
  • Number of pages: 686
  • Author:
  • Publisher: Elsevier

Physical Sciences Data, Volume 15: Handbook of Glass Data: Silica Glass and Binary Silicate Glasses, Part A presents information on the systems capable of forming glasses by cooling melts. This book provides data on the crystallization rates of glasses. Organized into six chapters, this volume begins with an overview of the melt properties for the glass-forming systems. This text then examines the notion of a component that is very significant for determining the number of components in each investigated glass. Other chapters consider the contents of several oxides of the same element but in different valent state as the reason to transfer a glass to the category of the increased number of components. This book discusses as well the analytical composition of glass. The final chapter deals with flotation method using tetrabromoethane and benzene mixture. This book is a valuable resource for glass specialists, chemists, engineers, scientists, and information science workers.

The Complete Book on Glass Technology

  • Filename: the-complete-book-on-glass-technology.
  • ISBN: 9788178330174
  • Release Date: 2008-10-01
  • Number of pages: 584
  • Author: NPCS Board of Consultants & Engineers

Glass is an amorphous solid usually formed by the solidification of a melt without crystallisation. It is an inorganic product of melting, which has been cooled to rigid state without crystallization. Melting is in fact the sole large scale industrial method of glass making. Glass is being used worldwide and has various applications. They are typically brittle and optically transparent. It is widely used in buildings and having industrial applications. The presence of glasses in our everyday environment is so common that we rarely notice their existence. Glass, as a substance, plays an essential role in science and industry. There are various methods of glass making other than melting for example condensation of vapours, conversion of crystals to an amorphous form using mechanical means or irradiation with fast neutrons, dehydration and sintering of gels, etc. Silica (the chemical compound SiO2) is a common fundamental constituent of glass. The properties of glass can be varied and regulated over an extensive range by modifying the composition, production techniques, or both. In any glass, the mechanical, chemical, optical, and thermal properties cannot occur separately. Instead, any glass represents a combination of properties, and in selecting an individual glass for a product, it is this combination that is important. As an architectural element, glass has become the quite essential product for your home or building. The applications of glass are limited only by your imagination; glass has many applications both internal and external that play a vital role in the function and design of your project. Industrially produced glasses can be divided into groups according to various criteria: composition, appearance, properties, application, method of forming etc. According to their chemical composition glasses are classified as silica glass (quartz glass), water (soluble) glass or sodium silicate glass, crystal glass, heat resistant glass, low alkali glass etc. Glass is finding ever wider applications in modern technology; sealing glasses which have been in use for many years, serve in vacuum tight joining of glass to metal, especially in vacuum electronics, in nuclear technology (protection from radiation, immobilization of radioactive waste by fusion into a chemically, resistant glass, etc.), in agriculture (as carrier of fertilizers with long term effects) and a number of possible application in electronics and many more. Some of the fundamentals of the book are structure of glass, structure of special melts and glasses, composition of glass, glass formation, crystallization and liquid, optical properties, theoretical strength of glasses, practical strengths of glasses, flaw sources and removal, viscosity of glass forming melts, theoretical principles of glass melting, chemical reactions occurring in glass melting, dissolution of solids in the melt, flow of glass in melting furnaces, physical chemical factors in sol gel processing, deposition of transparent non crystalline, metal oxide coatings by the sol gel process etc. The present book covers different important parameters of glass technology. The book is comprehensive guide for researchers, technologists, new entrepreneurs and professionals.

Melt Chemistry Relaxation and Solidification Kinetics of Glasses

  • Filename: melt-chemistry-relaxation-and-solidification-kinetics-of-glasses.
  • ISBN: 9781118408070
  • Release Date: 2012-04-11
  • Number of pages: 249
  • Author: Hong Li
  • Publisher: John Wiley & Sons

This volume will summarize the most recent development in experimentation, computation, and theory on chemistry of glass forming melt, including melt structure modeling and melt structure and characterizations. This volume provides a timely update on the advances in glass basic science research and development.

High Temperature Glass Melt Property Database for Process Modeling

  • Filename: high-temperature-glass-melt-property-database-for-process-modeling.
  • ISBN: UOM:39015067688310
  • Release Date: 2005-09-01
  • Number of pages: 291
  • Author: Thomas P. Seward, III
  • Publisher: Wiley-American Ceramic Society

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.

Electrochemistry of Glasses and Glass Melts Including Glass Electrodes

  • Filename: electrochemistry-of-glasses-and-glass-melts-including-glass-electrodes.
  • ISBN: 3540586083
  • Release Date: 2000-10-04
  • Number of pages: 452
  • Author: Hans Bach
  • Publisher: Springer Science & Business Media

This volume presents background information on the electrochemical behaviour of glass melts and solid glasses. The text lays the foundations for a sound understanding of physicochemical redox and ion transfer processes in solid or liquid glasses and the interpretation of experimental results. Other topics discussed include: control of production processes, the field-driven ion exchange between solutions and glasses or within electrochromic thin-film systems, mechanisms responsible for glass corrosion, the concept of optical basicity, and others. Throughout, the text contains practical examples enabling readers to study the various aspects of electrochemical processes in ion-conducting materials.

Germanate Glasses

  • Filename: germanate-glasses.
  • ISBN: UOM:39015029943266
  • Release Date: 1993-01-01
  • Number of pages: 181
  • Author: Alfred Margaryan
  • Publisher: Artech House Publishers

Here's a coherent discussion of the structure, physical properties, and current applications of germanium oxide glasses including fabrication techniques in the form of fibers.

Non Newtonian Viscosity of Bulk Metallic Glass Forming Liquids and the Ordering and Shear Rate Induced Crystallization of Undercooled Zirconium titanium copper nickel beryllium Metallic Glass Forming Melt

  • Filename: non-newtonian-viscosity-of-bulk-metallic-glass-forming-liquids-and-the-ordering-and-shear-rate-induced-crystallization-of-undercooled-zirconium-titanium-copper-nickel-beryllium-metallic-glass-forming-melt.
  • ISBN: 9780549405368
  • Release Date: 2007
  • Number of pages: 153
  • Author:
  • Publisher: ProQuest

Finally, the viscosities of two bulk metallic glass forming liquids Zr 57Cu15.4Ni12.6Al10Nb5 (Vit106) and Pd43Ni10Cu27P20 are measured and compared with the viscosity of Vit1. The main goal of this study was to investigate whether high viscosity and shear thinning behavior is just associated with Vit1 or the other BMG forming liquids also show such behavior. It is shown that all these glass formers show higher viscosities than monoatomic metallic liquids and surprisingly the non-Newtonian shear thinning behavior. Vit1 exhibits the highest viscosity with the largest drop in viscosity on shearing from 0.1 s-1 to 250 s-1 at the temperatures above Tliq. Vit106 shows lower viscosities than Vit1, however, a stronger non-Newtonian behavior on shearing from 0.1 s-1 to 143 s-1 at the temperatures between 1130 K and 1305 K is seen. Surprisingly, this non-Newtonian behavior disappears at higher shear rates where the viscosity stays constant. The melt viscosity of the Pd 43Ni10Cu27P20 shows a lower viscosity and much smaller shear thinning behavior than the Zr-based alloys. The viscosity data of Vit106 and Pd43Ni10Cu27P20 indicate a possibility to reach a steady state viscosity if high enough shear rates are applied to the melt of Vit1 at the temperatures between 1075 K and 1225 K. In all the three alloys, this non-Newtonian behavior gets weaker with increasing temperature and the material starts to behave like a Newtonian liquid. This behavior is attributed to the presence of MRO and short range order (SRO) in the melt of these alloys. The MRO present in the melt can be reduced by shearing and more effectively destroyed to SRO by increasing the temperature which leads to a Newtonian liquid with smaller viscosity.

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