2. Institute of Surface Science,Helmholtz-Zentrum Hereon(Hereon),21502 Geesthacht,Germany
3. Institute of Surface Science,Helmholtz-Zentrum Hereon(Hereon),21502 Geesthacht,Germany;Faculty of Engineering,University of Kiel,Kaiserstraße 2,24143 Kiel,Germany
The effect of a cathodic inhibitor(3-methylsalicylate,3-MeSA)on the corrosion properties of Fe-contained pure Mg was investigated.The composition of Fe-rich particles,corrosion surface morphology,and molecular structure of 3-MeSA provide experimental and theoretical evidence for the corrosion behavior of Fe-contained Mg alloy and the corresponding cathodic inhibition mechanism of 3-MeSA.The results showed that silicon in a solid solution within Fe-rich particles was found,and the features of corrosion spots may correlate with different Fe/Si ratios.Although 3-MeSA can form an adsorptive layer on Mg substrate,its inhibition mechanism can be mainly ascribed to the capability to chelate Fe2+/Fe3+ions released from self-corrosion of Fe-rich particles,preventing the re-deposition of the reduced Fe species.
关键词
镁/富铁杂质/铁配合剂/阴极型缓蚀剂/量子化学计算
Key words
magnesium/iron-rich impurity/iron complex/cathodic inhibitor/quantum chemical calculation
引用本文复制引用
基金项目
国家自然科学基金(52101084)
Guangdong Basic and Applied Basic Research Foundation(2023A1515011579)
Guangdong Basic and Applied Basic Research Foundation(2020A1515110754)
Guangzhou Basic and Applied Basic Research Foundation,China(202102020612)
维普
万方数据