Chemical durability of glass can be improved by applying a coating on the surface. It was also found that an addition of a minor quantity of calcium to the alkaline solution drastically improves the durability of silica glass. It was confirmed that calcium produces a film on the glass surface and protects the glass. A systematic study was made on the effects of all alkaline earth elements to see whether a similar phenomenon exists. All the alkaline earth elements were found to produce films, to a varied degree, on silica glass surface in alkaline solution. In addition, extensive crack growth was observed in the case of heavy alkaline earth elements such as Ba and Sr.
Ageing of composites is a highly topical subject given the increasing use of composites in structural applications in many industries. Ageing of composites addresses many of the uncertainties about the long-term performance of composites and how they age under conditions encountered in service.The first part of the book reviews processes and modelling of composite ageing including physical and chemical ageing of polymeric composites, ageing of glass-ceramic matrix composites, chemical ageing mechanisms, stress corrosion cracking, thermo-oxidative ageing, spectroscopy of ageing composites, modelling physical and accelerated ageing and ageing of silicon carbide composites. Part two examines ageing of composites in transport applications including aircraft, vehicles and ships. Part three reviews ageing of composites in non-transport applications such as implants in medical devices, oil and gas refining, construction, chemical processing and underwater applications.With its distinguished editor and international team of contributors, Ageing of composites is a valuable reference guide for composite manufacturers and developers. It also serves as a source of information for material scientists, designers and engineers in industries that use composites, including transport, chemical processing and medical engineering. - Addresses many of the uncertainties about the long-term performance of composites and how they age under conditions encountered in service - Reviews processes and modelling of composite ageing including chemical ageing mechanisms and stress corrosion cracking - Discusses ageing of composites in both transport and non-transport applications ranging from aircraft to implants in medical devices
Silicate Science, Volume VIII: Industrial Glass: Glazes and Enamels presents a focused discussion regarding glass fusion furnace construction as well as improvement for the efficiency of the various systems involved in glass engineering. The research papers presented in this volume are limited in the discussion of the physical and chemical reaction phenomena which occur in glass tank furnace and electric furnaces of other shapes. The book comprises of six major chapters where some chapters further divide into two parts. Most of the topics covered in this book include important improvements in the reactions of some batches, homogenization and fining of raw melts, and the behavior of the glass melts in situations where refractories come into contact with the molten material. This volume will serve as a rich source of information to students and researchers in the glass engineering, manufacturing, and technology.
A thorough and understandable guide to the properties and design of structural composites. It derives from the author's many years of experience of research, industrial development and teaching.
