Flaw-Size Distribution of Structural Ceramics

Ultrasonic Flaw Detection in Ceramics

Development of Superplastic Structural Ceramics

Superplastic structural ceramics (Y-TZP, A1203, Si3N4, and their composites) that can withstand biaxial stretching to large strains have been developed recently. Microstructural design of these ceramics first requires an ultrafine grain size that is stable against coarsening during sintering and deformation. A low sintering temperature is a necessary, but not a sufficient, condition for achievi...

Broadline NMR of Structural Ceramics

Magic angle spinning (MAS) has become the most widely used NMR technique for the study of inorganic solids. This popularity has come about because MAS removes the effects of chemical shift anisotropy, permitting acquisition of chemical shift spectra in these materials. However, there are two weaknesses to the MAS technique, which are accentuated in the study of structural ceramics. The first di...

Mono-Size Distribution Index (MSDI): A new criterion for the quantitative description of size distribution

Graphical size distribution is widely used in different fields of science and studies related to powders, droplets, bubbles, and pores. However, in some condition it may also be necessary to express the size distribution quantitatively. In spite of there being several suggested ways to quantify size distribution in the literature, some of these approaches are not applicable for many methods and...

Overview of Reliability in Structural Ceramics

The failure prediction requirements and the pertinent accept/reject criteria for structural ceramics are derived, and the available failure prediction techniques are examined, vis-a-vis the failure prediction relations , in order to highlight the capabilities and limitations of each technique. The need for additional techniques is thereby demonstrated. The capabilities of the ultrasonic techniq...