Author: Joan M. LonerganPublisher:
ISBN:
Category :
Languages : en
Pages : 256
Book Description
Neodymium-containing Oxynitride Glasses and Glass-ceramics
Author: Joan M. LonerganPreparation and Properties of Oxynitride Glasses and Glass-ceramics
Author: Vincent MorrisseyGlasses and Glass-Ceramics
Author: M.H. LewisPublisher: Springer Science & Business Media
ISBN: 9400908172
Category : Technology & Engineering
Languages : en
Pages : 388
Book Description
The emergence of synthetic ceramics as a prominent class of materials with a unique combination of properties has been an important part of the materials-science scene over the past 20 years. These 'high-technology' ceramics have varied applications in areas utilizing their exceptional mechanical, thermal, optical, magnetic or electronic properties. A notable development of the 1970s was that of 'Si-based' ceramics (Si3N4' SiC and 'Sialons') as high-temperature engineering solids. More recently the zirconia-based ceramics have evolved as a class of material with significant improvements in fracture-toughness. In the 1980s we are on the threshold of development of ceramic-matrix composites with the promise of over coming major limitations in engineering design with 'brittle' ceramics and the development of novel properties unattainable with monolithic micro structures. Throughout this period there have been significant but less well-publicized developments in the field of glass-ceramics and glasses. It is the purpose of this publication to review selected topics within this important area of materials science. A key element in understanding the relation between properties and microstructure is a knowledge of atomic arrangement in ceramic phases. Recent developments in NMR and X-ray absorption spectroscopies have had considerable impact on studies of atomic co-ordination in glasses and crystalline ceramic materials and are reviewed in Chapters 1 and 2. Glass-ceramics are derived from the parent glasses by controlled crystal lization and have properties dictated, in part, by the efficiency of crystal nucleation within the glass volume.
Glass Technology
Author: Oxynitride Glasses and Glass-ceramics
Author: John Andrew FernieCeramic Materials Research
Author: R. BrookPublisher: Elsevier
ISBN: 0080983596
Category : Technology & Engineering
Languages : en
Pages : 484
Book Description
The high expectations set on ceramic materials in recent years have always been balanced by the very considerable difficulties seen in reaching the required levels of reproducibility and cost. Indications of the significant progress, which can be seen in the papers presented in this volume, coupled with the recognition that considerable problems still lie between the state of the art and the full and confident exploitation of the many merits of ceramics, provide a healthy basis for the profitable selection of future research directions. The mastery of ceramic processing and the imaginative matching of the properties of these materials to diverse applications remain among the most promising sectors for technological development.
The Preparation and Characterisation of Oxynitride Glasses and Glass-Ceramics
Author: Stuart HampshirePublisher:
ISBN:
Category :
Languages : en
Pages : 96
Book Description
The objective was to study the effect on properties (such as microhardness, glass transition, crystallization temperature, viscosity, etc.) of replacing oxygen by nitrogen in sialon-based glasses containing rare-earth cations and to study the formation of glass-ceramics by controlled crystallization of these oxynitride glasses and to assess the effects of this on properties. Glasses were prepared by melting appropriate oxides and nitrides in boron nitride lined crucibles, melting at 1700 C under nitrogen and casting into preheated graphite moulds followed by annealing. Characterization of the glasses was carried out by differential thermal analysis (DTA) to ascertain the glass transition and crystallization temperatures and standard techniques used for microhardness and viscosity. Nitrogen increases the glass transition, microhardness and viscosity for constant cation ratio glasses and also inhibits crystallization. From DTA, suitable heat-treatment schedules were designed to produce fine-grain glass-ceramics. Optimization of these heat treatments was by measuring the changes (increases) in microhardness. Fully amorphous glasses can be prepared easily in large batches (approx. 100g) in many M-Si-Al-O-N systems. Work concentrated on Neodynium and Y-sialon glasses which undergo homogeneous nucleation at Tg+50 (C) followed by crystal growth at Tc-40 (C) each for 2.5 hours. (AW).
Springer Handbook of Glass
Author: J. David MusgravesPublisher: Springer Nature
ISBN: 3319937286
Category : Technology & Engineering
Languages : en
Pages : 1851
Book Description
This handbook provides comprehensive treatment of the current state of glass science from the leading experts in the field. Opening with an enlightening contribution on the history of glass, the volume is then divided into eight parts. The first part covers fundamental properties, from the current understanding of the thermodynamics of the amorphous state, kinetics, and linear and nonlinear optical properties through colors, photosensitivity, and chemical durability. The second part provides dedicated chapters on each individual glass type, covering traditional systems like silicates and other oxide systems, as well as novel hybrid amorphous materials and spin glasses. The third part features detailed descriptions of modern characterization techniques for understanding this complex state of matter. The fourth part covers modeling, from first-principles calculations through molecular dynamics simulations, and statistical modeling. The fifth part presents a range of laboratory and industrial glass processing methods. The remaining parts cover a wide and representative range of applications areas from optics and photonics through environment, energy, architecture, and sensing. Written by the leading international experts in the field, the Springer Handbook of Glass represents an invaluable resource for graduate students through academic and industry researchers working in photonics, optoelectronics, materials science, energy, architecture, and more.
Inorganic Glasses for Photonics
Author: Animesh JhaPublisher: John Wiley & Sons
ISBN: 1118696107
Category : Science
Languages : en
Pages : 344
Book Description
Advanced textbook on inorganic glasses suitable for both undergraduates and researchers. Engaging style to facilitate understanding Suitable for senior undergraduates, postgraduates and researchers entering material science, engineering, physics, chemistry, optics and photonics fields Discusses new techniques in optics and photonics including updates on diagnostic techniques Comprehensive and logically structured
Author: Charles Rieck (H.)