Thermophysical investigation of structural relaxation

✍ Scribed by J. Spišiak; Ľ. Kubičár; D. Křivánková

• Publisher: Springer
• Year: 1991
• Tongue: English
• Weight: 361 KB
• Volume: 12
• Category: Article
• ISSN: 0195-928X
• DOI: 10.1007/bf00502372

✦ Synopsis

This paper presents a method for investigating structural relaxation by the measurements of specific heat, thermal diffusivity, and thermal conductivity. The relaxation effects are demonstrated on a composite based on carbon. A model for the investigated material is suggested. The material consists of regions which are in equilibrium state and regions which are in nonequilibrium state. The transition to the equilibrium state is manifested by reduction in the anharmonic effects and by chemical reactions. The contradictory behavior of the thermal diffusivity above room temperature is discussed.