二氧化钛高压相变的研究进展

Progress on Phase Transition of Titanium Dioxide under High Pressure Conditions

二氧化钛不同结构相之间的转变很大程度上会影响着材料的性能,也是材料高压相变研究的重点。本文从二氧化钛的结构出发,对二氧化钛的三种晶型结构做了简要描述,综述了体材料锐钛矿和金红石的相变压力和相变过程、纳米材料锐钛矿和金红石的相变压力和相变过程,总结了不同粒径材料的相变压力和相变过程,旨在表明高压对材料结构的影响,最后对高压条件下制备研发新型纳米材料进行了展望。

The phase transition between different structural phases will affect the properties of materials to a large extent,and is also the focus of the research on high pressure phase transition of materials.Starting from the structure of titanium dioxide,this paper briefly described the three crystal structures of titanium dioxide.The phase transformation pressure and process from anatase nanomaterials to rutile and from anatase bulk materials to rutile are summarized separately,which demonstrate the effects of different particle sizes on the phase transformation pressure and the phase transformation process.The preparation and development of new nanomaterials under high pressure were prospected.