热力学视角下“晶体的熔化与凝固实验”问题探究  

Exploring problems in the “melting and solidification of crystals” experiment from the perspective of thermodynamics

作　　者：张雪[1] 徐莹[1,2] 于海波[1] 

机构地区：[1]东北师范大学物理学院,吉林长春130024 [2]东北师范大学物理学国家级实验教学示范中心,吉林长春130024

出　　处：《物理实验》2018年第2期59-62,共4页Physics Experimentation

基　　金：吉林省教育厅社会科学"十三五"规划项目(No.1505226);吉林省哲学社会科学规划项目(No.16QT001);吉林省基础教育教学研究规划课题(No.JLSJY2017G001)

摘　　要："探究固体熔化时温度的变化规律"实验观察到了许多与书中规律不符的现象,对于学生准确理解课程内容有较大的阻碍,比如过冷现象、凝固点与熔点不相等的现象.本文将从热力学的相变、晶体生长的角度对上述现象的物理学本质进行分析,从而找到更优化的实验方案.Many phenomena observed in the experiment of exploring the rule on the changes of melting temperature of solid was in inconsistent with the teaching materials,such as supercooling and the difference between freezing point and melting point.It impeded the students' understanding of the course content.Aiming at these problems,the physics essences were analyzed from the thermodynamics of phase transformation and crystal growth,and the optimized experimental programs were found.

关 键 词：晶体生长 相变 过冷现象 熔点 凝固点 

分 类 号：G633.7[文化科学—教育学]