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.
作者
张万群
邵伟
杨凯平
胡万群
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)
出处
《大学化学》
CAS
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)。
关键词
二氧化钛
相变
原位高温
X射线衍射
仪器分析实验
Titanium dioxide
Phase transformation
In situ high-temperature
X-ray diffraction
Instrumental analysis experiment
作者简介
通讯作者:张万群,Email:wqz@ustc.edu.cn。
