Mechanical Spectroscopy of Inorganic Materials Under Extremely High-Temperature Conditions

Abstract

It is introduced that usefulness of mechanical spectroscopy in searching many kinds of ceramics under extremely high temperatures. The data from the mechanical spectroscopy can help to understand the grain boundary sliding mechanism due to oxygen diffusion in glassy film. Inelastic mechanism at the grain boundary controls the internal friction background and creep. We showed experimentally that oxygen diffusion mechanism in zirconia ceramics causes an internal friction which is associated with stress relaxation due to stress induced motion of oxygen-dopant pair.