析氯钛基RuO_2－Co_3O_4－TiO_2（60）涂层的研究

用稳定极化、Ｘ射线衍射、透射电镜和扫描电镜的方法研究了钛基ＲｕＯ_２－Ｃｏ_３Ｏ_４－ＴｉＯ_２（６０）涂层的析氯活性、导电性、使用寿命、微观结构和表面形貌。并对其活性表面积进行了评价。详细讨论了涂层成份、微观结构和表面形貌对涂层析氯活性和活性表面积的影响。发现在０～１０ｍ／ｏＣｏ_３Ｏ_４和６０ｍ／ｏＴｉＯ_２成份范围内ＲｕＯ_２、Ｃｏ_３Ｏ_４和ＴｉＯ_２可形成单一金红石型固溶体，且有优异的析氯活性、电导率和使用寿命。以此研究为基础可改进氯碱工业广泛使用的传统ＲｕＯ_２－ＴｉＯ_２阳极，降低阳极涂层中贵金属含量，提高阳极的电化学性能．

A Study of RuO_2-Co_3O_4-TiO_2(60)Coating on Ti-Substrate for Chlorine Gas Evolution

The chlorine gas evolution activity,electric conductivity,service life,microstructure and surface morphology of RuO2-CO3O4-TiO2(60) coating on Ti-subetrate were studied in 0～30 m/o Co3O4 range by steady-state pelarization,x-ray diffraction,TEM and SEM methods.Active surface area of the coating was also evaluated. The in fluences of coating composition,micrortructure and surface morphology on chlorine gas evolution activity and active surface area of the coating were discussed in detail.As a result,sole rutile-type solid solution of RuO2,CO3O4 and TiO2 which showed better chlorine gas evolution activity,electric conductivity and service life was found in ca. 0～10 m/o Co3O4 range. Traditional RuO2-TiO2/Ti anedes being widely used in chlor-alkali industry could be medified by a suitable amount of Co3O4 for the benefit of reducing content of Ru as a noble metal in the coating and improving the electrochemical properties of the anodes.