Viscosity and Glass Transition in Amorphous Oxides
TLDR
In this paper, an overview of amorphous oxide materials viscosity and glass-liquid transition phenomena is given, including the configuron model of glass transition which shows a reduction of Hausdorff dimension of bonds at glass liquid transition.Abstract:
An overview is given of amorphous oxide materials viscosity and glass-liquid transition phenomena. The viscosity is a continuous function of temperature, whereas the glass-liquid transition is accompanied by explicit discontinuities in the derivative parameters such as the specific heat or thermal expansion coefficient. A compendium of viscosity models is given including recent data on viscous flow model based on network defects in which thermodynamic parameters of configurons—elementary excitations resulting from broken bonds—are found from viscosity-temperature relationships. Glass-liquid transition phenomena are described including the configuron model of glass transition which shows a reduction of Hausdorff dimension of bonds at glass-liquid transition.read more
Citations
More filters
Journal ArticleDOI
Glassy Wasteforms for Nuclear Waste Immobilization
Michael I. Ojovan,William E. Lee +1 more
TL;DR: In this article, a detailed analysis of the role of ion exchange and hydrolysis, and performance of irradiated glasses is analyzed with a detailed analytical model of glassy materials, along with a brief description of waste vitrification technology.
Journal ArticleDOI
Influence of thermal gradients on stress state of veneered restorations
TL;DR: Differences in residual stress were found for fast and slow cooled PZ and PFM crowns, and high magnitude transient stresses observed within the porcelain during fast cooling may explain clinical fractures involving internal defects.
Journal ArticleDOI
Connectivity and glass transition in disordered oxide systems
Michael I. Ojovan,William E. Lee +1 more
TL;DR: Angell's congruent bond lattice (CBL) model of topologically disordered oxide systems is used to analyse the connectivity of disordered systems accounting for the threshold degree of connectivity below which the system has a fluid-like behaviour as discussed by the authors.
Journal ArticleDOI
Brittle to ductile transition of tribomaterial in relation to wear response at high temperatures
Ariane Viat,Gaylord Guillonneau,Siegfried Fouvry,Guillaume Kermouche,Sergio Sao Joao,Juri Wehrs,Johann Michler,Jean-François Henne +7 more
TL;DR: In this paper, the third body formed in a contact between HS25 cobalt-based superalloy versus ceramic under fretting wear (small reciprocating displacements) was investigated.
References
More filters
Book
Introduction to solid state physics
TL;DR: In this paper, the Hartree-Fock Approximation of many-body techniques and the Electron Gas Polarons and Electron-phonon Interaction are discussed.
Journal ArticleDOI
Introduction to Solid State Physics
TL;DR: Kind's new edition is to be welcomed as mentioned in this paper, with a revised format and attractive illustrations, and with the inclusion of much new material this book has become one of the best sources for undergraduate teaching, likely to give the student a wish to dig deeper into the solid state.
Journal ArticleDOI
On the Temperature Dependence of Cooperative Relaxation Properties in Glass‐Forming Liquids
Gerold Adam,Julian H. Gibbs +1 more
TL;DR: In this paper, a molecularkinetic theory was proposed to explain the temperature dependence of relaxation behavior in glass-forming liquids in terms of the temperature variation of the size of the cooperatively rearranging region.
Journal ArticleDOI
Formation of glasses from liquids and biopolymers.
TL;DR: The onset of a sharp change in ddT( is the Debye-Waller factor and T is temperature) in proteins, which is controversially indentified with the glass transition in liquids, is shown to be general for glass formers and observable in computer simulations of strong and fragile ionic liquids, where it proves to be close to the experimental glass transition temperature.
Journal ArticleDOI
Molecular Transport in Liquids and Glasses
Morrel H. Cohen,David Turnbull +1 more
TL;DR: In this paper, the authors derived a relation between the diffusion constant D in a liquid of hard spheres and the free volume vf, which is based on the concept that statistical redistribution of free volume occasionally opens up voids large enough for diffusive displacement.