物理化学学报2012，Vol.28Issue(2)：393-398,6.DOI:10.3866/PKU.WHXB201112163
溶胶-凝胶法制备改性TiO2纳米薄膜及其防腐蚀性能
Anticorrosion Properties of Modified Nano-TiO2 Films Prepared by Sol-Gel Method
摘要
Abstract
TiO2 and B-Fe-Ce-modified TiO2 films were synthesized on the surfaces of 316L stainless steel (316L SS) substrates using a sol-gel and dip-coating method. The properties of the films were characterized by field emission scanning electron microscopy, atomic force microscopy, Raman spectroscopy and energy dispersive spectrometry. The corrosion resistance of the films and their ability to protect stainless steel were investigated by electrochemical impedance spectroscopy and potentiodynamic polarization curves. Both TiO2 and B-Fe-Ce-modified TiO2 films were composed of anatase nanoparticles about 15 and 10 nm in diameter, respectively. Impedance spectra of the stainless steel substrates coated TiO2 films contained semicircles for capacitive reactance in 0.5 mol ? L~' NaCI solution, but the charge transfer resistance of the B-Fe-Ce-TiO2/316L SS electrode was higher than that of the TiO2/316L SS electrode. The potentiodynamic anodic polarization curve of the B-Fe-Ce-TiO2/316L SS electrode showed a larger stable passive region and a higher breakdown potential than the TiO2/316L SS electrode, indicating that the modified film had better corrosion resistance and protective properties for 316L SS.关键词
TiO2纳米膜/溶胶-凝胶法/316L不锈钢/电化学阻抗谱Key words
Nano-TiO2 film/Sol-gel method/316L stainless steel/Electrochemical impedance spectroscopy分类
化学化工引用本文复制引用
朱燕峰,张娟,张义永,丁敏,漆海清,杜荣归,林昌健..溶胶-凝胶法制备改性TiO2纳米薄膜及其防腐蚀性能[J].物理化学学报,2012,28(2):393-398,6.基金项目
国家高技术研究发展计划项目(863) (2009AA03Z327)和国家自然科学基金(21073151和21173177)资助 （863）
