TiO₂组元对RuO₂+SnO₂+TiO₂/Ti阳极涂层微观结构的影响

来源期刊：中国有色金属学报2003年第3期

论文作者：王欣 唐电 周敬恩

文章页码：708 - 712

关键词：钛阳极；溶胶凝胶法； 纳米涂层； TiO₂

Key words：titanium anode; sol-gel; nanometer coatings; TiO₂

摘    要：通过溶胶凝胶（Sol-gel）过程制备了添加TiO₂的RuO₂+SnO₂/Ti 纳米涂层钛阳极， 并通过X射线衍射（XRD）、 差热分析（DTA）、 透射电子显微镜（TEM）分析了TiO₂组元对RuO₂+TiO₂+SnO₂/Ti电极涂层的微观结构和晶粒尺寸的影响。结果表明： 涂层组成物主要为（Ru, Sn, Ti）O₂固溶体，在TiO₂含量增加、退火温度升高时， 该固溶体仍可稳定存在； 添加TiO₂细化晶粒的效果不显著，但随退火温度的升高， TiO₂相对含量较高的涂层中晶粒长大速率较低，即TiO₂具备稳定晶粒尺寸的作用；添加TiO₂的涂层晶粒外观呈较理想的等轴状。

Abstract: RuO₂-SnO₂ titanium anode nano-coatings with different amounts of TiO₂ were obtained by a sol-gel procedure. The microstructure and the particle size of the RuO₂+TiO₂+SnO₂/Ti anode coatings were examined by means of XRD, DTA and TEM. The coatings consist of a solid solution, (Ru, Sn, Ti)O₂, which will be still stable when the amount of TiO₂ and the annealing temperature increase. The particle size of the coatings is little affected by the amount of TiO₂, but the increase of TiO₂ can prevent the growth of the crystal size when the annealing temperature is high. The morphology of the crystals is equiaxial.