液膜厚度对固态超滑表面在薄液膜下腐蚀行为的影响

doi:10.11902/1005.4537.2022.289

中国腐蚀与防护学报

2023, Vol. 43

Issue (4): 862-870 CSTR: 32134.14.1005.4537.2022.289 DOI: 10.11902/1005.4537.2022.289

曹楚南科教基金优秀论文专栏

本期目录 | 过刊浏览

液膜厚度对固态超滑表面在薄液膜下腐蚀行为的影响

任黄威¹, 廖伯凯², 崔琳晶¹, 项腾飞¹^,³(

)

^1.安徽工业大学建筑工程学院马鞍山 243002
^2.广州大学化学化工学院广州 510006
^3.先进金属材料绿色制备与表面技术教育部重点实验室马鞍山 243002

Effect of Liquid Film Thickness on Corrosion Behavior of Solid Slippery Surface under Thin Liquid Film

REN Huangwei¹, LIAO Bokai², CUI Linjing¹, XIANG Tengfei¹^,³(

)

^1.School of Civil Engineering, Anhui University of Technology, Ma'anshan 243002, China
^2.School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
^3.Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials, Ministry of Education, Ma'anshan 243002, China

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摘要:

利用电沉积法在低碳钢表面上构建了多孔微纳结构并灌注润滑剂制备出一种稳定的固态超滑表面 (SSS)。采用电化学测试，扫描电镜 (SEM) 和X射线衍射仪 (XRD) 等手段研究不同液膜厚度 (500，250，100和50 μm) 下SSS腐蚀防护行为及腐蚀后的微观结构变化规律。结果表明：在薄液膜腐蚀初期，随着薄液膜厚度的降低，SSS的腐蚀行为呈现较小差异，在100 μm厚度时SSS具有最大的阻抗，浸泡1 d后极限扩散电流密度为4.899×10^-6 A·cm^-2 (在-1.4 V电位下)，拟合后的阻抗值达到1.54×10⁵ Ω·cm²；即使浸泡7 d后仍具有6.98×10⁴ Ω·cm²的阻抗值，并难以检测到腐蚀产物的生成，表现出优异的稳定性和耐蚀性。

关键词 ：固态超滑表面, 电化学测试, 薄液膜, 腐蚀行为, 润湿性

Abstract：

A stable solid slippery surface (SSS) was fabricated by constructing micro-nano structure on the surface of low carbon steel via electrodeposition method and then lubricant was infused. The corrosion behavior of SSS and the changes of surface morphology and composition after corrosion test under liquid films of different thicknesses (500, 250, 100 and 50 μm) was characterized by means of electrochemical tests, scanning electron microscopy (SEM) and X-ray diffractometer (XRD) etc. The results showed that in the early stage of thin liquid film corrosion, as the thickness of the thin liquid film decreases, the corrosion behavior of SSS shows small differences, and the SSS showed the largest corrosion resistance when the thickness of thin liquid film was 100 μm. After immersion for 1 d, the limited diffusion current density is 4.899×10^-6 A·cm^-2 (at -1.4 V), and the fitted impedance value reaches 1.54×10⁵ Ω·cm². Even after soaking for 7 d, it still exhibited an impedance value of 6.98×10⁴ Ω·cm², and it was hard to detect the formation of corrosion products, demonstrated its excellent stability and corrosion resistance.

Key words： solid slippery surface electrochemical test thin liquid film corrosion behavior wettability

收稿日期: 2022-09-19 32134.14.1005.4537.2022.289

ZTFLH:

TG174

基金资助:国家自然科学基金(52201056);安徽高校自然科学研究重点项目(KJ2021A0377)

通讯作者: 项腾飞，E-mail: xiangtf@ahut.edu.cn，研究方向为超疏水/超滑防腐

Corresponding author: XIANG Tengfei, E-mail: xiangtf@ahut.edu.cn

作者简介: 任黄威，男，1998年生，硕士生
廖伯凯，2018 年博士毕业于华中科技大学，博士后工作于香港理工大学，广州大学化学化工学院副教授、硕士生导师。长期从事缓蚀剂、腐蚀电化学相关领域研究。在《Corrosion Science》等期刊上发表论文40 余篇，高被引论文3 篇，公开中国发明专利13 项，参编专著3 部；主持国家自然科学基金青年基金等项目6 项；现兼任中国腐蚀与防护学会理事、中国腐蚀与防护学会缓蚀剂与水处理专委会副秘书长、中国腐蚀与防护学会腐蚀电化学及测试方法专委会委员、广州腐蚀与防护学会副秘书长；《中国腐蚀与防护学报》、《Rare Metals》等期刊青年/客座编委；《Corrosion Science》、《Chemical Engineering Journal》等期刊审稿专家。2022 年获得曹楚南科教基金优秀论文奖。

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引用本文:

任黄威, 廖伯凯, 崔琳晶, 项腾飞. 液膜厚度对固态超滑表面在薄液膜下腐蚀行为的影响[J]. 中国腐蚀与防护学报, 2023, 43(4): 862-870.
REN Huangwei, LIAO Bokai, CUI Linjing, XIANG Tengfei. Effect of Liquid Film Thickness on Corrosion Behavior of Solid Slippery Surface under Thin Liquid Film. Journal of Chinese Society for Corrosion and protection, 2023, 43(4): 862-870.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2022.289 或 https://www.jcscp.org/CN/Y2023/V43/I4/862

图1 SSS制备过程示意图

图2 薄液膜试验装置图

图3 超疏水表面形貌及表面接触角，固态超滑表面形貌[23]、表面接触角、表面滑动行为、涂层断面厚度及EDS谱

图4 SSS在各液膜厚度下不同浸泡时间的阴极极化曲线和-1.4 V下的极限扩散电流

图5 SSS在各液膜厚度下不同浸泡时间的Nyquist及Bode曲线图

图6 SSS在各液膜厚度下的等效电路图

表1 SSS在各液膜厚度下不同浸泡时间的电化学参数

图7 不同液膜厚度下腐蚀后SSS的接触角和滑动角及液膜厚度为100 μm条件下SSS的延时滑动图像

图8 不同液膜厚度下腐蚀后样品表面形貌

表2 不同液膜厚度下腐蚀后样品表面元素分布及含量 (mass fraction / %)

图9 不同液膜厚度下腐蚀后样品的XRD谱

图10 SSS防腐机理示意图

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