Influence of Tensile Strain on the Corrosion Behavior of Tinplate in 0.1 mol/L NaCl Solution
Influence of Tensile Strain on the Corrosion Behavior of Tinplate in 0.1 mol/L NaCl Solution
复制标题
拉伸应变对马口铁在0.1 mol/L NaCl溶液中腐蚀行为的影响
DOI：
10.20964/2022.11.02
复制
发表时间：
2022-11-01
影响因子：
1.5
通讯作者：
Hu, Wenbin
中科院分区：
文献类型：
--
作者：
Liu, Xin;Wu, Sheng;Hu, Wenbin
采用极化曲线、电化学阻抗谱（EIS）和浸泡试验研究了不同拉伸应变下镀锡板在0.1mol/LNaCl溶液中的腐蚀行为。采用扫描电子显微镜（SEM）和原子力显微镜（AFM）观察镀锡板浸泡前后的表面形貌，采用电感耦合等离子体质谱仪（ICP-MS）测定NaCl溶液中溶解的铁离子含量。实验结果表明，随着拉伸应变的增加，变形后的镀锡板厚度减小，表面粗糙度增大，滑移带和缺陷密度增加。在NaCl溶液中，变形后的镀锡板具有正的腐蚀电位和较低的极化电阻，腐蚀电流密度和溶解在溶液中的铁离子浓度均随拉伸应变的增加而增加。在此基础上，建立了镀锡板腐蚀速率与拉伸应变之间的关系，并进行了讨论。
The corrosion behavior of tinplate with different tensile strain in 0.1 mol/L NaCl solution was investigated by using polarization curve, electrochemical impedance spectroscopy (EIS) and immersion tests. The surface morphology of tinplate before and after immersion was observed by scanning electron microscopy (SEM) and atomic force microscopy (AFM), and the content of iron ions dissolved in NaCl solution was determined by inductively coupled plasma mass spectrometer (ICP-MS). The experimental results showed that with the increasing of tensile strain the deformed tinplate has a lower thickness and a higher surface roughness, meanwhile the density of slip bands and defects on the tinplate is also increased. In NaCl solution, the deformed tinplate has a positive corrosion potential and a lower polarization resistance, and the corrosion current density and concentration of iron ions dissolved in solution are both raised with the increasing of tensile strain. Based on these results, the relationship between the corrosion rate and tensile strain of tinplate was built and discussed.