Download or read book Study of the Physical Properties of a Novel Lithium Aluminosilicate Dental Glass ceramic written by Zaid Ghalib Al-Jlaihawi and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical Properties of a Lithium Disilicate Strengthened Lithium Aluminosilicate Glass ceramic written by Maria Łączka and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Glasses and Glass Ceramics for Medical Applications written by Emad El-Meliegy and published by Springer Science & Business Media. This book was released on 2011-12-02 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glass ceramics are a special group of materials in which a base glass can be crystallized under carefully controlled conditions, which in turn determine the properties of the material. These materials offer a wide range of physical and mechanical properties combining the distinctive characteristics of sintered ceramics and glasses. This book provides readers with an interest in medical ceramics with the ability to start making their own glasses and glass ceramics, together with an understanding of the various factors that control the final properties of these medical and dental materials. In addition, the authors describe various industrial problems with current, clinically-used medical glass ceramics and discuss appropriate scientific solutions. Glasses and Glass Ceramics for Medical Applications will appeal to a broad audience of biomaterials scientists, ceramists, and bioengineers, particularly those with an interest in orthopedic and dental applications, as well as scientists and engineers involved in the manufacture of glasses, glazes, enamels, and other glass coatings for the medical materials industry. The book will also be of interest to undergraduate and graduate students in materials engineering and dentistry, and is suitable for use in courses on medical and dental materials.
Download or read book Glass Ceramic Technology written by Wolfram Holand and published by John Wiley & Sons. This book was released on 2012-06-08 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glass-ceramic materials share many properties with both glass and more traditional crystalline ceramics. This new edition examines the various types of glass-ceramic materials, the methods of their development, and their countless applications. With expanded sections on biomaterials and highly bioactive products (i.e., Bioglass and related glass ceramics), as well as the newest mechanisms for the development of dental ceramics and theories on the development of nano-scaled glass-ceramics, here is a must-have guide for ceramic and materials engineers, managers, and designers in the ceramic and glass industry.
Download or read book The Chemical Durability of a Lithium Aluminosilicate Glass ceramic written by Basil Michael Yurcisin and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nucleation and Crystallization of Glasses and Glass Ceramics written by Wolfram Höland and published by Frontiers Media SA. This book was released on 2017-07-21 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: The E-book "Nucleation and Crystallization of Glasses and Glass-Ceramics" highlights historic perspectives and current research in the field of glass-ceramic technology. Glass-ceramic technology is promising to provide us with materials of high strength, high toughness, unique electrical/electronic or magnetic properties, exceptional optical or unusual thermal or chemical properties. The greater diversity of microstructure-property arrangements and processing routes over glasses and ceramics are responsible that glass-ceramics are the preferred choice of materials in many technical, consumer, optical, medical/dental, electrical/electronic, and architectural fields. This includes increasing uses of glass-ceramic materials for environment and energy applications in the last decades. The positive development of glass-ceramic technology has become true in particular due to the pioneering spirit, resourcefulness, and courage of researchers of the first generation. Extraordinary and, therefore, to be distinguished is the work of the glass-ceramic inventor S. Donald Stookey to whom this Research Topic is dedicated. The authors, all experts in the field of glass-ceramics and based in industry, academia and governmental institutions, contributed to this E-book under the guidance of the Technical Committee 07 "Crystallization and Glass-Ceramics" of the International Commission on Glass (ICG).
Download or read book Nano Glass Ceramics written by Vahak Marghussian and published by William Andrew. This book was released on 2015-01-06 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nano-Glass Ceramics: Processing, Properties and Applications provides comprehensive coverage of synthesis and processing methods, properties and applications of the most important types of nano-glass ceramics, from a unique material science perspective. Emphasis is placed on the experimental and practical aspects of the subject while covering the theoretical and practical aspects and presenting, numerous examples and details of experimental methods. In the discussing the many varied applications of nano-glass ceramics, consideration is given to both, the fields of applications in which the materials are firmly established and the fields where great promise exists for their future exploitation. The methods of investigation adopted by researchers in the various stages of synthesis, nucleation, processing and characterization of glass ceramics are discussed with a focus on the more novel methods and the state of the art in developing nanostructured glass ceramics. - Comprehensive coverage of nanostructured glass ceramics with a materials science approach. The first book of this kind - Applications-oriented approach, covering current and future applications in numerous fields such as Biomedicine and Electronics - Explains the correlations between synthesis parameters, properties and applications guiding R&D researchers and engineers to choose the right material and increase cost-effectiveness
Download or read book Glass Ceramic Technology written by Wolfram Holand and published by John Wiley & Sons. This book was released on 2019-08-09 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: An updated edition of the essential guide to the technology of glass-ceramic technology Glass-ceramic materials share many properties with both glass and more traditional crystalline ceramics. The revised third edition of Glass-Ceramic Technology offers a comprehensive and updated guide to the various types of glass-ceramic materials, the methods of development, and the myriad applications for glass-ceramics. Written in an easy-to-use format, the book includes an explanation of the new generation of glass-ceramics. The updated third edition explores glass-ceramics new materials and properties and reviews the expanding regions for applying these materials. The new edition contains current information on glass/glass-ceramic forming in general and explores specific systems, crystallization mechanisms and products such as: ion exchange strengthening of glass-ceramics, glass-ceramics for mobile phones, new glass-ceramics for energy, and new glass-ceramics for optical and architectural application. It also contains a new section on dental materials and twofold controlled crystallization. This revised guide: Offers an important new section on glass/glass ceramic forming Includes the fundamentals and the application of nanotechnology as related to glass-ceramic technology Reviews the development of the various types of glass-ceramic materials Covers information on new glass-ceramics with new materials and properties and outlines the opportunities for applying these materials Written for ceramic and materials engineers, managers, and designers in the ceramic and glass industry, the third edition of Glass-Ceramic Technology features new sections on Glass/Glass-Ceramic Forming and new Glass-Ceramics as well as expanded sections on dental materials and twofold controlled crystallization.
Download or read book Lithium Disilicate Glass Ceramics Containing Lithium Tantalate As A Secondary Phase written by Anthony De Ceanne and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lithium disilicate (LD) glass-ceramics were discovered in the 1950s, and the evolution of the main target phase of these materials is well-known. However, the LD system is still an area of active research, especially when a secondary phase is introduced since the phase evolution of secondary phases is not currently understood. The first stage of the present work examines microstructural effects in a single parent composition of a LD system that contains lithium tantalate (LT) as a secondary phase. The phase assemblage evolution is studied via x-ray diffraction and the crystal morphology of the system is imaged via scanning electron microscopy. It is found that the nucleation of the precursor lithium metasilicate phase is coupled to both the nucleation of both LD and LT, and from this work, a reaction equation to describe these relationships is proposed: 2(Li2SiO3) + Ta2O5 Li2Si2O5 + 2(LiTaO3). A large data set is analyzed to investigate the relationship between heat treatments and several key properties, namely optical and mechanical properties, specifically the L*a*b* color coordinates and the Knoop hardness (HK). This is the first known systematic study of Knoop hardness for a LD glass-ceramic. It is found that the L* values increase once the growth rates of LD and LT increase and that HK is higher for microstructures that were produced via a high nucleation temperature and middle to high growth temperature. The experimental data are used to train several machine learning models to predict color coordinates and HK values. These first ever machine learning models for glass-ceramic materials successfully predict the color and hardness trends of the materials and also predict values for new microstructures that are not examined experimentally. Linear regression models provide physical insight into the HK results, showing that the hardest samples are the result of microstructures that contain a high amount of small crystals, especially LD and LT crystals. To build off this work, the second stage of the present study designed novel compositions to examine the effect of the ratio of [SiO2] to [Li2O] on the phase assemblage, microstructure, and corresponding properties of this LD system that contained LT as a secondary phase. This study was aimed at validating or disproving the proposed reaction equation from the first stage. The phase assemblage data are in support of the proposed reaction equation because LT content increased, and LD content decreased in the material as the [SiO2]/[Li2O] decreased. Lastly, the study provides a glimpse into the radiopacity values of each composition, finding that radiopacity increases as more Ta2O5 is introduced into the composition.
Download or read book Advanced Ceramics for Dentistry written by James Shen and published by Butterworth-Heinemann. This book was released on 2013-09-05 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growth of implant and fixed prosthodontics practices in dentistry has created a rapidly increasing demand for advanced ceramics and ceramic processes. Innovations in ceramics and ceramic processes are vital to ensure reliable and affordable dental-restoration solutions with aesthetically pleasing outcomes. The work aims to engage the bioceramics and engineering communities to meet the challenges of modern dental restoration using advanced ceramics. Incorporating fundamental science, advanced engineering concepts, and clinical outcomes, the work is suitable for bioceramicists, ceramics manufacturers, dental clinicians and biologists. - State-of-the-art-coverage encompasses bioresorbable ceramics for bone regeneration and bioactivating surfaces of inert, high-strength ceramics for implantation, keeping research knowledge appropriately updated - Discusses transition from the baseline stable and physically stiff ceramics research into engineering of highly coherent laminate composites for prosthetic crowns and bridges - Showcases current feasible techniques for producing, in cost-effective and materials-saving ways, long-lasting individualized ceramic components with biocompatibility, complexity and high precision
Download or read book Introduction to Glass Science and Technology written by James E Shelby and published by Royal Society of Chemistry. This book was released on 2015-11-06 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a concise and inexpensive introduction for an undergraduate course in glass science and technology. The level of the book has deliberately been maintained at the introductory level to avoid confusion of the student by inclusion of more advanced material, and is unique in that its text is limited to the amount suitable for a one term course for students in materials science, ceramics or inorganic chemistry. The contents cover the fundamental topics of importance in glass science and technology, including glass formation, crystallization, phase separation and structure of glasses. Additional chapters discuss the most important properties of glasses, including discussion of physical, optical, electrical, chemical and mechanical properties. A final chapter provides an introduction to a number of methods used to form technical glasses, including glass sheet, bottles, insulation fibre, optical fibres and other common commercial products. In addition, the book contains discussion of the effects of phase separation and crystallization on the properties of glasses, which is neglected in other texts. Although intended primarily as a textbook, Introduction to Glass Science and Technology will also be invaluable to the engineer or scientist who desires more knowledge regarding the formation, properties and production of glass.
Download or read book Catalyzed Controlled Crystallization of Glasses in the Lithium Aluminosilicate System written by Eugene Boris Uvarov and published by . This book was released on 1965 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Properties Of CAD CAM Lithium Disilicate Glass Ceramic In Different Firing Temperatures And Thicknesses written by Nasser Alqahtani and published by . This book was released on 2016 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Background: With the emerging of digital dentistry, IPS e.max® CAD lithium disilicate (LD) glass-ceramic material has become one of the most popular esthetic restorative materials in digital assisted dental esthetic restoration. The mechanical and optical properties of this material have been investigated in several studies. However, there is a lack of information and consensus regarding the optical properties of IPS e.max® LD glass-ceramic materials. Objectives: 1) To investigate the optical properties as translucency parameters (TP), Contrast ratio (CR), light transmissions (Lt) and color changes (CC) between high-translucent (HT) and low-translucent (LT) IPS e.max® CAD LD glass-ceramic materials with different crystalline phases and thickness in different firing stages. 2) To investigate the optical properties as TP, CR, Lt and CC of each translucent (HT and LT) IPS e.max® CAD LD glass-ceramic materials with different crystalline phases and thickness in different firing stages. 3) To determine the mathematical relationships of thicknesses of IPS e.max® CAD LD glass-ceramics materials with TP and Lt. Materials and methods: The total of 120 of shade A2 IPS max CAD samples (HT and LT) were prepared into square shape (15.25 mm X 15.25 mm) and were divided into two main groups according to the material translucency (HT and LT) (n=60). Each main group was further divided into 5 sub-groups according to the thickness (1.00, 1.25, 1.5, 1.75, and 2.00 mm) (n=12). Each thickness group was assigned into three groups based on different crystallization (firing) temperatures (750, 820 °C in single stage heating schedule with 1 second and 10 second holding times, respectively, and 840 °C with two-stage heating schedule (RECOM) (820°C, 840 °C with 10 second and 7 min holding time, respectively) as recommended by manufacturer (n=4). CIEL*a*b*, TP, CR, and Lt were measured and calculated for all samples. Statistical analysis: The effects of the test results were evaluated using 3-way ANOVA with factors for Translucency (HT and LT), Firing Temperature (750, 850, and RECOM) and Thickness (1, 1.25, 1.5, 1.75, and 2), as well as all two-way and three-way interactions among the factors. Pair-wise comparisons were made using Least Significant Differences to control the overall significance level at 5%. Results: The mean irradiance and TP for both HT and LT decrease as the thickness of the samples increases from 1 to 2mm with significant difference between the thickness groups within each material translucency groups (HT and LT) and between both HT and LT. The coefficients of absorption (c) of the two materials were calculated. The effective incidence irradiance when material thickness approaches zero (Ie) was also calculated. There is an unexpected spectral peak shift as the thickness of the samples increases. There is no statistically significant difference in Ie at 750 ̊C and 820 ̊C between the HT and LT. However, there is a statistically significant higher Ie in HT at the recommended firing temperature as expected. Coefficients of translucency parameter (p) of the materials in various firing temperature were defined and the TP of the material as the thickness approaches zero were calculated (TP0). The TP of the materials is directly correlated to the mean irradiance passing through the samples. There is no statistically significant difference in the TP0 and Ie of the HT and LT groups at the recommended firing temperature. Conclusion: In this project we developed modified Beer-Lambert law to describe the parameters governing the effect of thickness on light transmission in dental ceramic material. We also applied the same equation to describe the translucency parameter. The parameters defined in these equations allow us to compare the optical property of dental ceramic material independent of the thickness of the samples.
Download or read book Ceramic and Glass Materials written by James F. Shackelford and published by Springer Science & Business Media. This book was released on 2008-04-12 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a concise, up-to-date book that covers a wide range of important ceramic materials used in modern technology. Chapters provide essential information on the nature of these key ceramic raw materials including their structure, properties, processing methods and applications in engineering and technology. Treatment is provided on materials such as alumina, aluminates, Andalusite, kyanite, and sillimanite. The chapter authors are leading experts in the field of ceramic materials. An ideal text for graduate students and practising engineers in ceramic engineering, metallurgy, and materials science and engineering.
Download or read book An Investigation of the Physical Properties of Some Lithium cerium boron Glasses written by Donald H. Van Gaasbeck and published by . This book was released on 1960 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Glass ceramic Materials written by Zdeněk Strnad and published by . This book was released on 1986 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalyzed Controlled Crystallization of Glasses in the Lithium Aluminosilicate System written by V. V. Vargin and published by Springer. This book was released on 2014-04-09 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
