|
|
EFFECTS OF LOW CATHODIC POTENTIAL ON ELECTRODEPOSITED SILANE FILMS ON ALUMINUM ALLOY |
XU Yibing; HE Deliang; ZHOU Zhou; ZHONG Jianfang; XU Chao; CUI Zhengdan; ZENG Liping |
College of Chemistry and Chemical Engineering; Hunan University; Changsha 410082 |
|
|
Abstract Bis-1,2-[triethoxysilylpropyl]tetrasulfide (BTSPS) films have been successfully deposited at low cathodic potential in silane solution modified by surfactant, and a new critical cathodic potential (NCCP) (-1.6 V) has been found. The study indicated the surface morphology of silane films prepared at low cathodic potential were more compact and thicker than those prepared at conventional critical cathodic potential (-0.8 V),and BTSPS films prepared at low cathodic potentials in modified silane solution exhibited obviously higher corrosion resistances in comparison with silane films prepared by conventional electrodeposition method. Hydrogen evolution could be decreased as well as the electrodeposition of silane could be improved while adding the surfactant. Anti-corrosion of films is better as well as a negative shift of the critical cathodic potential.
|
Received: 11 September 2007
|
|
Corresponding Authors:
HE Deliang
E-mail: delianghe@163.com
|
[1] Subramanian V, Van Ooij W J. Effect of amine functional group on corrosion rate of iron coated with films of organofunctional silanes[J]. Corrosion, 1998, 54(3): 204-215
[2] Zhu D, Van Ooij W J. Enhanced corrosion resistance of AA 2024-T3 and hot-dip galvanized steel using a mixture of bis-[triethoxysilylpropyl]tetrasulfide and bis-[trimethoxysilylpropyl]-amine[J]. Electrochim.Acta, 2004, 49: 1113-1125
[3] Woo H, Reucroft P J, Jacob R J.Electrodeposition of organofunctional silanes and its influence on structural adhesive bonding[J]. J. Adhes. Sci.Technol., 1993, 7(7): 681-697
[4] Zhu D, Van Ooij W J. Corrosion protection of metals by water-based silane mixtures of bis-[trimethoxysilylpropyl] amine and vinyltriacetoxysilane[J]. Prog. Org. Coat., 2004, 49: 42-53
[5] Montemor M F, Cabral A M, Zheludkevich M L, et al. The corrosion resistance of hot dip galvanized steel pretreated with bis-functional silanes modified with microsilica[J]. Surf. Coat. Technol., 2006, 200: 2875-2885
[6] Palanivel V, Huang Y, Van Ooij W J. Effects of addition of corrosion inhibitors to silane films on the performance of AA2024-T3 in a 0.5M NaCl solution[J]. Prog. Org. Coat., 2005, 53: 153-168
[7] Shacham R, Avnir D, Mandler D. Electrodeposition of methylated sol-gel films on conducting surfaces[J]. Adv. Mater., 1999, 11: 384-388
[8] Sheffer M, Groysman A, Mandler D. Electrodeposition of sol-gel films on Al for corrosion protection[J]. Corros. Sci., 2003, 45: 2893-2904
[9] Gandhi J S, Van Ooij W J. Improved corrosion protection of aluminum alloys by electrodeposited silanes[J]. J. Mater. Eng.Perform, 2004, 13(4): 475-480
[10] Hu J M , Liu L , Zhang J Q, et al.Electrodeposition of silane films on aluminum alloys for corrosion protection[J]. Prog. Org. Coat., 2007, 58: 265-271
[11] Hu J M, Liu L, Zhang J Q, et al. Effects of electrodeposition potential on the corrosion properties of bis-1, 2-[triethoxysilyl]ethane films on aluminum alloy[J]. Electrochim. Acta, 2006, 51: 3944-3949 |
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
|
Shared |
|
|
|
|
|
Discussed |
|
|
|
|