Na-Ti-Si氧化物Ti元素的化学状态分析

Study on the Microstructure of Na_2O-TiO_2-SiO_2 Glass

利用熔融方法制备了Na2 O -TiO2 -SiO2 系统玻璃样品 ,用IR以及XPS等测试手段对该系统玻璃样品结构进行了分析。结果表明 :Na2 O -TiO2 -SiO2 系统玻璃中Ti4 +离子可以部分地取代Si4 +离子的位置而以网络形成体的形式参与成玻。此外 ,通过对该系统玻璃的XPS钛元素的化学状态分析 ,认为该系统玻璃中Ti4 +离子存在 [TiO4 ]、[TiO6]等几种不同的微结构单元 ,并且随着玻璃中TiO2 含量的增加 ,该系统玻璃中四方双锥结构的 [TiO6]与正四面体结构的 [TiO4

Na 2O-TiO 2-SiO 2 glass samples have been prepared by melting methods. Measurements such as Infrared spectroscopy(IR) and X-ray photoelectron spectroscopy(XPS) have been carried out. It is found that Ti 4+ may take place of the Si 4+ to become glass network former. Furthermore, in the glass system a few different microsturctural units such as [TiO 4],[TiO 6] and so on have existed. Finally the ratio of the microsturctural unit [TiO 6] to [TiO 4] increases with the increasing of TiO 2 content.