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首页 > 过刊浏览>2024年第27卷第5期 >454-460. DOI:10.3969/j.issn.1007-9629.2024.05.010
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基于电沉积水热法的钢表面Mg-Al-NO3-LDH膜原位生长制备及沉积电位优化
作者:
作者单位:

深圳大学 广东省滨海土木工程耐久性重点实验室，广东 深圳 518060

作者简介:

董必钦（1975—），男，浙江温州人，深圳大学教授，博士生导师，博士.E-mail：incise@szu.edu.cn

通讯作者:

洪舒贤（1982—），女，福建泉州人，深圳大学教授，博士生导师，博士.E-mail：sxhong@szu.edu.cn

中图分类号:

TU503

基金项目:

国家自然科学基金资助项目（52078298，52122907，51925805）


In Situ Growth and Deposition Potential Optimization of Mg-Al-NO3-LDH Film on Steel Surface Based on Electrodeposition Hydrothermal Method
Author:
Affiliation:

Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering， Shenzhen University， Shenzhen 518060， China

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    摘要:

    为提升建筑用钢的耐久性，通过电沉积法在钢表面形成层状双氢氧化物（LDH）晶核，再通过水热反应让LDH晶核生长成形成致密的Mg-Al-NO3-LDH膜，分析了电沉积电位对钢基底表面LDH膜生长的影响，讨论了LDH膜的形成机理.结果表明，当电沉积电位为-1.4 V（相对于Ag/AgCl电极）时，LDH纳米片聚集堆叠致密，形成的LDH膜结构最为密实，实现了对钢基底良好的锈蚀防护.

    Abstract:

    To improve the durability of construction steel， the layered double hydroxide（LDH）crystal nucleus was formed in the steel surface through electrical deposition method. The LDH continued to grow into a dense Mg-Al-NO3-LDH film through water heat reaction. The effect of the electric sediment voltage on the growth of the LDH film on the surface was analyzed and the mechanism of LDH membrane was discussed. The results show that when the electric precipitation voltage is -1.4 V， LDH nanoparticles are concentrated and stacked together and LDH thin film shape is the densest. A good anti-corrosion protection function on the base of steel is obtained.

    表 1 空白样品和样品MH4的极化曲线参数Table 1 Polarization curve parameters of blank sample and sample MH4
    图1 空白样品和不同电沉积电位钢片表面的SEM图像Fig.1 SEM images of blank sample and steel surfaces after electrodeposition at different potentials
    图2 空白样品和不同电沉积电位钢表面的XRD图谱和拉曼光谱Fig.2 XRD patterns and Raman spectra of blank sample and steel surfaces after electrodeposition at different potentials
    图3 不同电沉积电位-水热反应后钢表面的SEM图像Fig.3 SEM images of steel surfaces after electrodeposition-hydrothermal treatment at different potentials
    图4 不同电位电沉积-水热反应后钢表面的XRD图谱和FTIR图谱Fig.4 XRD patterns and FTIR spectra of steel surfaces after electrodeposition at different potentials
    图5 不同电沉积电位制备Mg-Al-NO3-LDH膜的Nyquist图和Bode图Fig.5 Nyquist and Bode plots for the preparation of Mg-Al-NO3-LDH films at different electrodeposition potentials
    图6 空白钢片和不同电沉积电位LDH样品在3.5%NaCl溶液中的动电位极化曲线Fig.6 Polarization curves of blank steel and LDH samples deposited at different potentials in 3.5% NaCl solution
    图7 在饱和Ca（OH）2 /3.5% NaCl混合溶液中的样品MH4和空白样品的Nyquist图和Bode图Fig.7 Nyquist and Bode plots of sample MH4 and blank sample immersed in saturated Ca（OH）2/3.5% NaCl mixed solution
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董必钦,陈家濠,陈沛榆,刘文杰,洪舒贤.基于电沉积水热法的钢表面Mg-Al-NO3-LDH膜原位生长制备及沉积电位优化[J].建筑材料学报,2024,27(5):454-460

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  • 收稿日期:2023-06-12
  • 最后修改日期:2023-09-25
  • 在线发布日期: 2024-06-11
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