摘要
应用阴极电沉积技术在301不锈钢表面制备TiO_2薄膜,用X射线衍射仪、热重-差热分析仪分析了镀层的相组成和晶型转化过程随温度的变化,研究了工艺条件对镀层结构及耐腐蚀性能的影响.Tafel曲线测量结果显示,在5 mA/cm^2的恒电流密度电沉积20 min后,经400℃烧结和水热处理得到的薄膜电极,其防腐性能最好.循环伏安曲线测量结果表明,在含有不同浓度Cl^-的0.05 mol/L NaOH溶液中,TiO_2薄膜电极抗Cl^-腐蚀的能力是301不锈钢的2.2倍.
The TiO2 film was fabricated by electrodeposition technique on 301 stainless steel surface, and the effect of processing parameters on the film structure and anticorrosion performance was systematically studied. The phase constituents and crystallization process of coatings at different temperatures were characterized using X-ray diffraction and TG-DTA analyzer, respectively. In 3.5% NaC1 solution, the Tafel curve showed that the film, which was electrodeposited by constant current density of 5 mA/cm2 for about 20 min, then annealed at 400 ℃and hydrothermal post-treated, had the best anticorrosion performance. Cyclic voltammetry curves indicated that in 0.05 mol/L NaOH solution containing different CI concentrations, electrodes of 301 stainless steel with TiO2 film exhibited corrosion resistance was 2.2 times as high as 301 stainless steel.
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2012年第6期478-483,共6页
Corrosion Science and Protection Technology
关键词
阴极电沉积
TiO2薄膜电极
电化学腐蚀
301不锈钢
cathodic electrodeposing, TiO2 film electrode, electrochemical corrosion, 301 stainless steel
