咖啡酸对NaCl中Zn腐蚀的影响:电化学研究
Aleksander Kucharek1, Elżbieta Kuśmierek1, Ewa Chrześcijańska1
1Institute of General and Ecological Chemistry, Lodz University of Technology, ul. Zeromskiego 116, 90-924 Lodz, Poland.
Molecules (Basel, Switzerland)
|September 13, 2025
概括
咖啡酸 (CA) 涂层在盐水环境中显著提高了的耐腐蚀性. 这种绿色腐蚀抑制剂,作为涂层应用,实现了近95%的效率,超过其添加到溶液.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 腐蚀科学 腐蚀科学
背景情况:
- (Zn) 的腐蚀在各种工业应用中带来了重大挑战.
- 开发有效和环保的腐蚀抑制剂是一个关键的研究领域.
- 咖啡酸 (CA) 因其作为绿色腐蚀抑制剂的潜力而得到认可.
研究的目的:
- 为了研究咖啡酸 (CA) 对 (Zn) 在0.1M NaCl溶液中的腐蚀抑制特性.
- 为了比较CA作为涂层的有效性与其添加到腐蚀性介质的有效性.
- 为了阐明CA在 Zn 表面上抑制腐蚀的机制.
主要方法:
- 电化学技术包括潜在动力极化 (PDP) 和电化学阻抗光谱 (EIS).
- 使用扫描电子显微镜与能量分散光谱学 (SEM-EDS) 结合进行表面分析.
- 通过X射线衍射 (XRD) 和飞行时间二次离子质谱 (TOF-SIMS) 进行高级表面表征.
主要成果:
- 与直接添加到NaCl溶液中的CA相比,咖啡酸 (CA) 涂层对Zn的腐蚀保护性更强.
- 对CA涂层的浸泡时间较长,抑制效率增加.
- 最高的抑制效率,接近95%,是通过从乙醇溶液中获得10mM的CA涂层来实现的.
- 表面分析证实了Zn表面上的CA存在,并且对腐蚀产品的显著减少.
结论:
- 咖啡酸是一种高效的绿色腐蚀抑制剂,用于在化物环境中,当作为涂层应用时.
- CA涂层提供了增强和持久的保护,效率随着时间的推移而提高.
- 该研究证实了CA在Zn表面的保护机制,减少了腐蚀产品的形成.
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