当前位置: X-MOL 学术Mater. Corros. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Experimental and theoretical studies of cinnamyl alcohol as a novel corrosion inhibitor for copper foils in rolling oil
Materials and Corrosion ( IF 1.8 ) Pub Date : 2020-07-20 , DOI: 10.1002/maco.202011887
Zhangliang Zhao 1 , Jianlin Sun 1 , Huajie Tang 1 , Xudong Yan 1
Affiliation  

Cinnamyl alcohol (CA) was added to the rolling oil of copper foils as a novel corrosion inhibitor, and its anticorrosion performance and mechanism were studied using potentiodynamic polarization and electrochemical impedance spectroscopy. Microstructure and chemical composition of the copper electrode surface were analyzed by scanning electron microscopy, energy‐dispersive spectroscopy, and X‐ray photoelectron spectroscopy. The results showed that CA acted as a mixed‐type inhibitor, and the maximum inhibition efficiency of 87.7% was achieved at 2.4 mM. Moreover, a protective film was formed on the copper surface, which attributed to the C–OH groups in the CA molecule. The absorption of CA on the copper surface was physisorption, which conformed to Langmuir adsorption isotherm, with a standard adsorption free energy of −11.38 kJ/mol. In the presence of CA, some flaky corrosion products changed into granular corrosion products. The synergistic effect of the granular corrosion products (copper chloride hydroxide) and the CA film further decreased the corrosion rate.

中文翻译:

肉桂醇作为轧制油中铜箔新型缓蚀剂的实验和理论研究

在铜箔的轧制油中加入肉桂醇(CA)作为新型缓蚀剂,并利用电位动力学极化和电化学阻抗谱研究了其防腐性能和机理。铜电极表面的微观结构和化学成分通过扫描电子显微镜,能量分散光谱和X射线光电子能谱进行了分析。结果表明,CA是一种混合型抑制剂,在2.4 mM时可达到87.7%的最大抑制效率。此外,在铜表面上形成了一层保护膜,这归因于CA分子中的C-OH基团。CA在铜表面的吸收为物理吸附,符合Langmuir吸附等温线,标准吸附自由能为-11.38 kJ / mol。在CA的存在下,一些片状腐蚀产物变成了颗粒状腐蚀产物。颗粒状腐蚀产物(氢氧化氯化铜)与CA膜的协同作用进一步降低了腐蚀速率。
更新日期:2020-07-20
down
wechat
bug