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Synthesis and Characterization of Modified Nano-TiO_2 Films for corrosion protection of Stainless Steel

机译:不锈钢防腐用纳米TiO_2改性薄膜的合成与表征

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摘要

A TiO_2 film and a B-Fe-Ce-modified TiO_2 film were prepared on the surface of 316L stainless steel (316L SS) substrates by a sol-gel and dip-coating method. The corrosion resistance of the films and their protective properties for the stainless steel were investigated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization curve measurements. The results showed that the TiO_2 film and the B-Fe-Ce-modified TiO_2 film were composed of anatase TiO_2 nanoparticles with the diameters about 15 nm and 10 nm, respectively. The EIS results suggested that the B-Fe-Ce-TiO_2 film could provide more effective corrosion protection for 316L SS in 0.5 M NaCl solution. The potentiodynamic anodic polarization curve of the B-Fe-Ce-TiO_2/316L SS electrode in the above solution showed a larger stable passive region and a higher breakdown potential (E_b) than that of the TiO_2/316L SS.
机译:通过溶胶-凝胶和浸涂法在316L不锈钢(316L SS)基体表面制备了TiO_2膜和B-Fe-Ce改性的TiO_2膜。通过电化学阻抗谱(EIS)和电势极化曲线测量研究了薄膜的耐腐蚀性及其对不锈钢的保护性能。结果表明,TiO_2薄膜和B-Fe-Ce修饰的TiO_2薄膜分别由直径约15nm和10nm的锐钛矿型TiO_2纳米颗粒组成。 EIS结果表明,B-Fe-Ce-TiO_2薄膜可以在0.5 M NaCl溶液中对316L SS提供更有效的腐蚀防护。在上述溶液中,B-Fe-Ce-TiO_2 / 316L SS电极的电位动力学阳极极化曲线显示出比TiO_2 / 316L SS更大的稳定无源区和更高的击穿电位(E_b)。

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    State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China;

    State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China;

    State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China;

    State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China;

    State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China;

    State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China;

    State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China;

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