二氧化钛相变的原位高温X射线衍射分析——介绍一个仪器分析拓展性实验  

In Situ High-Temperature X-ray Diffraction Study of Titanium Dioxide Phase Transformation:An Extended Instrumental Analysis Experiment

作　　者：张万群[1] 邵伟[1] 杨凯平[1] 胡万群[1] Wanqun Zhang;Wei Shao;Kaiping Yang;Wanqun Hu(National Demonstration Center for Experimental Chemistry Education(University of Science and Technology of China),Hefei 230026,China)

机构地区：[1]国家级实验教学示范中心(中国科学技术大学),合肥230026

出　　处：《大学化学》2023年第8期186-191,共6页University Chemistry

基　　金：国家自然科学基金(GG2060190383);中国科学技术大学教改项目(2022xjyxm020);首批教育部虚拟教研室(大学化学实验课程群虚拟教研室)。

摘　　要：介绍一个仪器分析拓展性实验——二氧化钛相变的原位高温X射线衍射分析。该实验的主要内容包括:利用原位高温X射线衍射检测二氧化钛锐钛矿到金红石相变过程,并分析相变过程中结构变化,涵盖物相、定量、晶格常数、晶粒尺寸和微观应力计算分析。通过本实验将基础晶体材料结构理论知识和多种X射线衍射分析技能相融合,培养了学生综合知识的运用能力、科研能力和创新能力。An extended instrumental analysis experiment“In situ high-temperature X-ray diffraction study of titanium dioxide phase transformation”is recommended for undergraduates.In this experiment,the phase transformation of TiO_(2)was carefully investigated using in situ high-temperature X-ray powder diffraction.The structural changes,including the composition,quantification,lattice constant,grain size,and lattice strains,were analyzed during the phase transformation process.Theoretical knowledge of the basic crystal material structure and a variety of X-ray diffraction analysis skills were combined with the experiments.It is useful for students to acquire knowledge on application,scientific research,and innovation.

关 键 词：二氧化钛 相变 原位高温 X射线衍射 仪器分析实验 

分 类 号：G64[文化科学—高等教育学] O6[文化科学—教育学]