The last 30 years have seen a steady development in the range of ceramic materials with potential for high temperature engineering applications: in the 60s, self-bonded silicon carbide and reaction-bonded silicon nitride; in the 70s, improved aluminas, sintered silicon carbide and silicon nitrides (including sialons); in the 80s, various toughened Zr0 materials, ceramic matrix composites reinforced with silicon 2 carbide continuous fibres or whiskers. Design methodologies were evolved in the 70s, incorporating the principles of fracture mechanics and the statistical variation and time dependence of strength. These have been used successfully to predict the engineering behaviour of ceramics in the lower range of temperature. In spite of the above, and the underlying thermodynamic arguments for operations at higher temperatures, there has been a disappointing uptake of these materials in industry for high temperature usc. Most of the successful applications are for low to moderate temperatures such as seals and bearings, and metal cutting and shaping. The reasons have been very well documented and include: * Poor predictability and reliability at high temperature. * High costs relative to competing materials. * Variable reproducibility of manufacturing processes. * Lack of sufficiently sensitive non-destructive techniques. With this as background, a Europhysics Industrial Workshop sponsored by the European Physical Society (EPS) was organised by the Netherlands Energy Research Foundation (ECN) and the Institute for Advanced Materials of the Joint Research Centre (JRC) of the EC, at Petten, North Holland, in April 1990 to consider the status of thermomechanical applications of engineering ceramics.

Although the basis for understanding the brittle fracture strength of ceramics was established by A. A. Griffith in 1920, much of our detailed knowledge was developed during the 1970s. This book was first published in 1979, when the science of the mechanical behaviour of engineering ceramics had reached a consolidated stage and was being applied ever increasingly to engineering situations. The bulk of the information was still scattered in scientific journals and this volume sought to consolidate these. This book presents the scientific foundations of mechanical behaviour and demonstrates how these can be used in engineering situations. The emphasis is on principles, illustrated by a careful selection of experimental data. This book will continue to have value as a reference work on this exciting subject.