摘要
Polymeric nano-film on the surface of Mg-Mn-Ce magnesium alloy was fabricated by polymer plating of 6-dihexylamino-1,3,5-triazine-2,4-dithiol monosodium(DHN) to improve its corrosion resistance.The electrochemical reaction process was analyzed by cyclic voltammetry and two obvious peaks of oxidation reaction were observed.The static contact angle of distilled water on polymer-plated surface can be up to 106.3°while on the blank surface it is 45.8°.Potentiodynamic polarization results show that the polymeric film can increase the corrosion potential from -1.594 V vs SCE for blank to -0.382 V vs SCE.The results of electrochemical impedance spectroscopy indicate that the charge transfer resistances of blank and polymer-plated Mg-Mn-Ce alloy are 485Ω·cm^2 and 2 717Ω·cm^2,respectively.The method of polymer plating can provide a novel approach for fabricating hydrophobic film on Mg-Mn-Ce alloy surface and improving its anti-corrosion property.
Polymeric nano-film on the surface of Mg-Mn-Ce magnesium alloy was fabricated by polymer plating of 6-dihexylamino-1, 3, 5-triazine-2, 4-dithiol monosodium （DHN） to improve its corrosion resistance. The electrochemical reaction process was analyzed by cyclic voltammetry and two obvious peaks of oxidation reaction were observed. The static contact angle of distilled water on polymer-plated surface can be up to 106.3° while on the blank surface it is 45.8°. Potentiodynamic polarization results show that the polymeric film can increase the corrosion potential from -1.594 V vs SCE for blank to -0.382 V vs SCE. The results of electrochemical impedance spectroscopy indicate that the charge transfer resistances of blank and polymer-plated Mg-Mn-Ce alloy are 485 Ω.cm^2 and 2 717 Ω.cm^2, respectively. The method of polymer plating can provide a novel approach for fabricating hydrophobic film on Mg-Mn-Ce alloy surface and improving its anti-corrosion property.
出处
《中国有色金属学会会刊：英文版》
CSCD
2008年第A01期374-379,共6页
Transactions of Nonferrous Metals Society of China
基金
Project(50673028)supported by the National Natural Science Foundation of China
Project(04020090)supported by Guangdong NaturalScience Foundation,China
关键词
耐腐蚀材料
镁合金
聚合体
物理性能
magnesium alloy
polymer plating
nano-film
hydrophobic film
potentiodynamic polarization
electrochemical impedance spectroscopy
corrosion resistance
