The effect of Mn incorporation on zirconium conversion coating with and without organic coating
عنوان مقاله: The effect of Mn incorporation on zirconium conversion coating with and without organic coating
شناسه ملی مقاله: ICAPC04_045
منتشر شده در چهارمین کنگره بین المللی پوشش های حمل و نقل در سال 1393
شناسه ملی مقاله: ICAPC04_045
منتشر شده در چهارمین کنگره بین المللی پوشش های حمل و نقل در سال 1393
مشخصات نویسندگان مقاله:
R Mohammad Hosseini - M. Sc Student, Faculty Of Polymer Engineering & Color Technology, Amirkabir University of Technology Tehran, Iran
A.A Sarabi - Assistant Professor, Faculty Of Polymer Engineering & Color Technology, Amirkabir University of Technology, Tehran, Iran
H Eivaz Mohammadloo - PhD Student, Faculty Of Polymer Engineering & Color Technology, Amirkabir University of Technology, Tehran, Iran
خلاصه مقاله:
R Mohammad Hosseini - M. Sc Student, Faculty Of Polymer Engineering & Color Technology, Amirkabir University of Technology Tehran, Iran
A.A Sarabi - Assistant Professor, Faculty Of Polymer Engineering & Color Technology, Amirkabir University of Technology, Tehran, Iran
H Eivaz Mohammadloo - PhD Student, Faculty Of Polymer Engineering & Color Technology, Amirkabir University of Technology, Tehran, Iran
In this paper, manganese ion was added to a hexafluorozirconic acid based conversion coatingto study how this additive affects corrosion resistance, morphology and composition of the coating. The properties of the coated surface was examined EIS tests for comparing the corrosion resistance of differently coated samples and AFM to evaluate surface morphology.The higher charge transfer resistance of conversion coating was observed in the presence of 0.01 g/l Mn ion in the solution as reported by EIS results. According to AFM, more uniformity was observed for zirconium conversion coating containing 0.01 g/l Mn ion compared to that with no Mn. The organic coating applied on the Zr conversion coating without Mn ion showed the highest corrosion resistance with |Z| 0.01 Hz = 1.34 x 1010 after 6 weeks immersion in corrosive media. Consequently, although a certain additive such as MnSO4 may modify conversion coating characteristics, it can not necessarily improve corrosion performance in an organic coated system
کلمات کلیدی: Conversion coating; Zirconium; Manganese; Atomic Force Microscopy; Electrochemical Impedance Spectroscopy
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/336299/