304不锈钢表面ZnO/TiO<sub>2</sub>复合薄膜的制备与光生阴极防腐蚀性能研究

doi:10.11902/1005.4537.2013.215

中国腐蚀与防护学报

2014, Vol. 34

Issue (6): 507-514 DOI: 10.11902/1005.4537.2013.215

本期目录 | 过刊浏览

304不锈钢表面ZnO/TiO₂复合薄膜的制备与光生阴极防腐蚀性能研究

许洪梅, 柳伟(

), 曹立新, 苏革, 高荣杰

中国海洋大学材料科学与工程研究院青岛 266100

Preparation of ZnO/TiO₂ Composite Film on 304 Stainless Steel and Its Photo-cathodic Protection Properties

XU Hongmei, LIU Wei(

), CAO Lixin, SU Ge, GAO Rongjie

Institute of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China

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摘要:

采用溶胶-凝胶法和旋涂技术在304不锈钢表面制备了纳米ZnO/TiO₂复合薄膜,使用XRD和SEM对复合薄膜的晶体结构和表面形貌进行了表征。采用电化学分析手段研究了薄膜的复合方式和煅烧温度对复合薄膜光电性能的影响, 考察了复合薄膜在3.0%NaCl溶液中对304不锈钢的光阴极保护性能。结果表明,采用分层制备和分步煅烧工艺制备的ZnO/TiO₂复合薄膜具有优良的光电性能,在紫外光激发下对304不锈钢的光阴极保护性能要显著优于单一TiO₂薄膜和ZnO薄膜。

关键词 ： 304不锈钢, ZnO/TiO₂复合薄膜, 光电性能, 光阴极保护

Abstract：

ZnO/TiO₂ composite film was prepared on the surface of 304 stainless steel by sol-gel technique and spin coating method. The phase composition and microstructure of the as-prepared ZnO/TiO₂ composite film was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. The effect of the preparation procedure and calcination temperature on the photoelectric property has been investigated and the photocathodic protection performance of such composite film for 304 stainless steel was also evaluated in 3.0%NaCl solution by using the electrochemical method. The results indicate that the composite film prepared by two-step procedure with proper calcination temperature exhibits excellent photo-electrochemical performance. The photocathodic protection property of ZnO/TiO₂ composite film for 304 stainless steel under UV light illumination is significantly superior to that of pure TiO₂ film and ZnO film respectively.

Key words： 304 stainless steel ZnO/TiO₂ composite film photo-electrochemical photocathodic protection

ZTFLH:

TG134.1

基金资助:中央高校基本科研业务费中国海洋大学青年教师专项基金项目 (201113001) 资助

作者简介: null

许洪梅，女，1988年生，硕士生，研究方向为海洋环境下材料的物理化学行为

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引用本文:

许洪梅, 柳伟, 曹立新, 苏革, 高荣杰. 304不锈钢表面ZnO/TiO₂复合薄膜的制备与光生阴极防腐蚀性能研究[J]. 中国腐蚀与防护学报, 2014, 34(6): 507-514.
Hongmei XU, Wei LIU, Lixin CAO, Ge SU, Rongjie GAO. Preparation of ZnO/TiO₂ Composite Film on 304 Stainless Steel and Its Photo-cathodic Protection Properties. Journal of Chinese Society for Corrosion and protection, 2014, 34(6): 507-514.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2013.215 或 https://www.jcscp.org/CN/Y2014/V34/I6/507

图1 不同温度煅烧所得ZnO薄膜和 ZnO/TiO2复合薄膜的XRD谱

图2 不同温度煅烧的ZnO薄膜表面与裂纹处的SEM像

图3 ZnO/TiO2复合薄膜的表面, 断裂面, 断面中间层和断面下层薄膜的局部放大图

图4 涂覆不同薄膜的304不锈钢试样的开路电位-时间曲线

图5 涂覆ZnO/TiO2复合薄膜试样的开路电位和电流密度随ZnO煅烧温度的变化趋势

图6 涂覆ZnO/TiO2复合薄膜试样的开路电位和电流密度随ZnO/TiO2热处理温度的变化趋势

图7 在暗态和紫外光激发下304不锈钢裸样, 分别涂覆TiO2薄膜和ZnO/TiO2复合薄膜试样在3.0%NaCl溶液中的极化曲线

表1 Nyuist图等效电路图的拟合参数

图8 试样在3.0%NaCl溶液中的Nyquist图及其等效电路图

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