Surface Analysis of Calcium Aluminosilicate Glasses After Aqueous Corrosion
Surface Analysis of Calcium Aluminosilicate Glasses After Aqueous Corrosion

Author: Daniel Kramer

Publisher:

Published: 2016

Total Pages:

ISBN-13:

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The calcium aluminosilicate glass (CAS) system is a useful ternary system to evaluate the corrosion response of alkaline earth aluminosilicate glass surfaces. The chemical durability of this glass system has not been well studied, but is relevant to both fundamental glass science and industrial glass manufacturing where alkali-free aluminosilicate glasses are exposed to corrosive conditions during processing for electronics and optics. The objective of this work is to relate the bulk composition to surface response for various compositions in the calcium aluminosilicate system. These studies emphasized the characterization of CAS glass surfaces before and after corrosion in combination with existing solution chemistry experiments. Corrosion effects such as altered layer formation and hydration were studied for a range of CAS glass compositions. Surface characterization techniques such as x-ray photoelectron spectroscopy (XPS), infrared vibrational spectroscopy (FTIRRS, ATR-IR), and secondary ion-mass spectrometry (D-SIMS) were used to characterize the glass surfaces. The surface response of CAS glass surfaces was found to depend on composition, solution pH, and reaction time. For relatively high-silica CAS glasses (>70% SiO2), incongruent dissolution was not found to be an in-depth effect of corrosion even in strong acid conditions as observed for other glass systems such as the sodium aluminosilicate glass system. Analysis of the reacted glass surfaces indicated the attack of Al-O bonds and release of calcium as the primary mode of degradation in acidic solution. The reactivity of the glass surfaces was found to trend with the relative amount of alumina in the bulk composition.

Chemistry of Glasses
Chemistry of Glasses

Author: A. Paul

Publisher: Springer Science & Business Media

Published: 1989-11-30

Total Pages: 386

ISBN-13: 9780412278204

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The chemistry of glass is a rapidly developing field brought about by the merging together of advanced chemistry and advanced physics. While acting as a text book on the subject, this work may also serve as a useful reference source for students and research workers alike.

Glass Science
Glass Science

Author: R. H. Doremus

Publisher: Wiley-Interscience

Published: 1994-04

Total Pages: 360

ISBN-13:

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"This Second Edition of Robert H. Doremus's classic, Glass Science, has been extensively revised and updated to reflect recent advances, while retaining the pedagogical structure that made its predecessor a superb tool for both teaching and professional research. Special emphasis is placed on areas of research that have been particularly active in recent years. Two new chapters have been added: one covers chemical durability [the reaction of glass with water], which includes recent work related to corrosion of glass and radioactive waste disposal: the other concerns the reaction of gasses with glass, especially oxygen. Other new or expanded discussions cover recent advances in the structure of glass, zirconium fluoride glasses, and electrical conductivity of glass.".

Evolution of Alkali Aluminosilicate Glasses
Evolution of Alkali Aluminosilicate Glasses

Author: Melanie A. Dudka

Publisher:

Published: 2019

Total Pages: 42

ISBN-13:

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High performance glasses with good abrasion resistance as well as thermal properties are in high demand as technology expands. Increasing alumina content in glasses can aid in increasing its performance properties. Twenty-five different compositions containing systematic molar ratios of silica and alumina to alkali were made. Compositions were batched and melted in 40ml yttria stabilized (YSZ) zirconia crucibles. This resulted in the creation of 16 glass samples and 9 crystallized samples that defined the glass transformation boundary. The glass transformation temperature and hardness were measured to determine the resultant properties the [sic] of the glasses created. As expected, the glass transformation temperature increased with an increase in the alumina content, with a value as high as 704°C. The hardness of the glass did not correlate with an increase in alumina. An optimal composition window was determined with a hardness value as high as 11.1 GPa.

Fundamentals of Inorganic Glasses
Fundamentals of Inorganic Glasses

Author: Arun K. Varshneya

Publisher: Elsevier

Published: 2019-05-09

Total Pages: 756

ISBN-13: 0128162260

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Fundamentals of Inorganic Glasses, Third Edition, is a comprehensive reference on the field of glass science and engineering that covers numerous, significant advances. This new edition includes the most recent advances in glass physics and chemistry, also discussing groundbreaking applications of glassy materials. It is suitable for upper level glass science courses and professional glass scientists and engineers at industrial and government labs. Fundamental concepts, chapter-ending problem sets, an emphasis on key ideas, and timely notes on suggested readings are all included. The book provides the breadth required of a comprehensive reference, offering coverage of the composition, structure and properties of inorganic glasses. - Clearly develops fundamental concepts and the basics of glass science and glass chemistry - Provides a comprehensive discussion of the composition, structure and properties of inorganic glasses - Features a discussion of the emerging applications of glass, including applications in energy, environment, pharmaceuticals, and more - Concludes chapters with problem sets and suggested readings to facilitate self-study

Glass Nanocomposites
Glass Nanocomposites

Author: Basudeb Karmakar

Publisher: William Andrew

Published: 2016-01-19

Total Pages: 410

ISBN-13: 0323393128

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Glass Nanocomposites: Synthesis, Properties and Applications provides the latest information on a rapidly growing field of specialized materials, bringing light to new research findings that include a growing number of technologies and applications. With this growth, a new need for deep understanding of the synthesis methods, composite structure, processing and application of glass nanocomposites has emerged. In the book, world renowned experts in the field, Professors Karmakar, Rademann, and Stepanov, fill the knowledge gap, building a bridge between the areas of nanoscience, photonics, and glass technology. The book covers the fundamentals, synthesis, processing, material properties, structure property correlation, interpretation thereof, characterization, and a wide range of applications of glass nanocomposites in many different devices and branches of technology. Recent developments and future directions of all types of glass nanocomposites, such as metal-glasses (e.g., metal nanowire composites, nanoglass-mesoporous silica composites), semiconductor-glass and ceramic-glass nanocomposites, as well as oxide and non-oxide glasses, are also covered in great depth. Each chapter is logically structured in order to increase coherence, with each including question sets as exercises for a deeper understanding of the text. - Provides comprehensive and up-to-date knowledge and literature review for both the oxide and non-oxide glass nanocomposites (i.e., practically all types of glass nanocomposites) - Reviews a wide range of synthesis types, properties, characterization, and applications of diverse types of glass nanocomposites - Presents future directions of glass nanocomposites for researchers and engineers, as well as question sets for use in university courses