Correlation Characteristics of the Volumetric Thermal Expansion Coefficient and Specific Heat of Corundum

被引：17

作者：

Bodryakov, V. Yu ^{[1
]}

Bykov, A. A. ^{[1
]}

机构：

[1] Ural State Pedag Univ, Ekaterinburg, Russia

来源：

GLASS AND CERAMICS | 2015年 / 72卷 / 1-2期

关键词：

Gruneisen's law; corundum (aluminum oxide); correlation; thermal expansion coefficient; specific heat; SYNTHETIC SAPPHIRE ALPHA-AL2O3; STANDARD REFERENCE MATERIAL; ALUMINUM-OXIDE; SOLIDS;

D O I：

10.1007/s10717-015-9726-2

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The correlation between the volumetric thermal expansion coefficient (VLEC) o(T ) and specific heat C(T) of corundum alpha-Al2O3 is examined in detail. It is shown that there is a clear correlation o(C) not only at low temperatures (to about 50 K), where it is linear (Gruneisen's law), but also in a wider temperature range, viz., up to the melting point of corundum. Asignificant deviation from the low-temperature linear behavior of the temperature dependence of the VTEC o(C) occurs when the specific heat reaches the Dulong-Petit classical limit 5.3R. The results of the present work can be used to verify the data from primary calorimetric and dilatometric studies of ceramic and other materials.

引用

页码：67 / 70

页数：4

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