【摘要】 根据固体的弹性模量对温度的依赖性能了解高温下的热弹性性质,我们得到了弹性模量与等压体积膨胀存在精确的指数形式公式,并计算了和这两种物质在不同温度下的弹性常数.所有计算结果和实验之吻合很好.更多还原

【Abstract】 Theremoelastu properties of non-cubic minerals at high temperature can be understood adequately by knowing the temperature dependences of their elastic constants.It has been found that there exists a precise relationship showing exponential dependence of their elastic constants onisobaric volume expansion for some typical non-cubic minerals such as Al2O3 and Mg2SiO4 at high temperatures.We have calculated the values of elastic constants at different temperatures for the non-cubic minerals under study.The calculated values of elastic constants are found to show fairly good agreement with available experi mental data.更多还原