非立方矿物的弹性常数和等压膨胀对温度的依赖性(英文)  

Temperature Dependence of Isobaric Volume Expansion and Elastic Constants of Non-cubic Minerals

作　　者：邢玲玲[1] 彭雪城[1] 方正华[1] 

机构地区：[1]安徽师范大学物理与电子信息学院,安徽芜湖241000

出　　处：《安徽师范大学学报（自然科学版）》2007年第5期560-563,566,共5页Journal of Anhui Normal University(Natural Science)

基　　金：the Natural Science Foundation of Anhui Educational Board(Project No.2006kj073A);the keySubject Foundation of Atomic and Molecular Physics of Anhui province

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.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 on isobaric 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 noncubic minerals under study. The calculated values of elastic constants are found to show fairly good agreement with available experimental data.

关 键 词：弹性常数 Anderson-Gruneisen参数 体积热膨胀 

分 类 号：N0[自然科学总论—科学技术哲学] O522.1[理学—高压高温物理]