Please wait a minute...
J Chin Soc Corr Pro  2010, Vol. 30 Issue (4): 283-287    DOI:
Research Articles Current Issue | Archive | Adv Search |
EFFECT OF PANI/ EPOXY COATING ON THE CORROSION RESISTANCE OF AZ91D MAGNESIUM ALLOY
ZHANG Yingjun1, FENG Tao1,2, SHAO Yawei1, MENG Guozhe1, ZHANG Tao1, WANG Fuhui1,3
1. Corrosion and Protection Laboratory,College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001
2. CSSC Guangzhou Longxue Shipbuilding Co., Guangzhou, 511458
3. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016
Download:  PDF(1394KB) 
Export:  BibTeX | EndNote (RIS)      
Abstract  

The chemical oxidative method was applied to prepare the eigenstate polyaniline (PANI) and hydrofluoric acid doped PANI, whose structure was characterized by FT-IR. Epoxy resin was used as the film-forming substance and to prepare the eigenstate PANI and hydrofluoric acid doped PANI/epoxy coating on AZ91D magnesium alloy surface, and their anti-corrosion properties were studied by means of electrochemical impedance spectroscopy (EIS) in 3.5% NaCl solution. The surface morphology of AZ91D magnesium alloy after immersion was observed by SEM. The results indicated that the addition of eigenstate PANI could significantly improved the corrosion resistance of epoxy varnish coating. However, hydrofluoric acid doped PANI/epoxy coating had better corrosion resistance than eigenstate PANI/epoxy coating. XPS results indicated that the presence of polyaniline changed the chemical structure of the corrosion film on the alloy surface.

Key words:  polyaniline coating      hydrofluoric acid doped      AZ91D magnesium alloy      EIS, corrosion resistance     
Received:  07 July 2009     
ZTFLH: 

TG174.4

 
Corresponding Authors:  SHAO Yawei     E-mail:  shaoyawei@hrbeu.edu.cn

Cite this article: 

ZHANG Yingjun, FENG Tao, SHAO Yawei, MENG Guozhe, ZHANG Tao, WANG Fuhui. EFFECT OF PANI/ EPOXY COATING ON THE CORROSION RESISTANCE OF AZ91D MAGNESIUM ALLOY. J Chin Soc Corr Pro, 2010, 30(4): 283-287.

URL: 

https://www.jcscp.org/EN/     OR     https://www.jcscp.org/EN/Y2010/V30/I4/283

[1] Li W X. Magnesium and Magnesium Alloys [M]. Changsha:Central South University Press, 2005
    (黎文献. 镁及镁合金 [M]. 长沙: 中南大学出版社, 2005)
[2] Zhang Y, Zhang H, Chen Y L, et al. Study on corrosion resistance of different surface treatments on AZ91D magnesium alloy [J]. New Technol. New Proc., 2009, 1: 93-96
    (张勇, 张虹, 陈跃良等.不同表面处理对AZ91D镁合金耐蚀性的影响研究 [J]. 新技术新工艺, 2009, 1: 93-96)
[3] Jing X L, Zhao W B, Zheng M S. Study on properties of doped polyaniline [J]. Petrochem. Technol. Appl., 2001, 19(4): 225-228
    (井新利, 赵卫兵, 郑茂盛. 掺杂态聚苯胺的性能研究 [J].石化技术与应用, 2001, 19(4): 225-228)
[4] Huang J L, Wang Z An, Li Q Q, et al. Anticorrosion property of P-M ethyl phenyl sulfonic acid doped polyaniline for magnesium [J]. Corros. Sci. Prot. Technol.,2008, 20(4): 283-285
    (黄健涵, 王治安, 李倩倩等.对甲苯磺酸掺杂聚苯胺对镁的防腐蚀性能 [J]. 腐蚀科学与防护技术, 2008,20(4): 283-285)
[5] Sathiyanarayanan S, Muthukrishnan S,Venkatachari G, et al. Corrosion protection of steel by polyaniline (PANI) pigmented paint coating [J]. Prog. Org. Coat., 2005, 53: 297-301
[6] Syed A S, Sathiyanarayanan S, Venkatachari G.Anticorrosive properties of PANI-ATMP polymer containing organic coating [J]. Prog. Org. Coat., 2006, 56: 154-158
[7] Li P, Tan T C,Lee J Y. Corrosion protection of mild steel by electroactive polyaniline coatings [J]. Synth. Met., 1997, 88(3): 237-242
[8] Ren N Y, Wang B C. Corrosion prevention of 45 steel by eigenstate polyaniline coating [J]. J. Mater. Prot., 2006, 39(2): 4-6
    (任乃媛, 王保成. 本征态聚苯胺对45钢的腐蚀防护性能 [J]. 材料保护,2006, 39(2): 4-6)
[9] Zhang Q H, Wang X H, Jing X B. Synthesis of polyaniline and it's spectra properties [J]. Chem. World, 2001, 5: 242-244
    (张清华, 王献红, 景遐斌. 聚苯胺的合成及光谱特征 [J]. 化学世界, 2001, 5: 242-244)
[10] Huang Z L, Yang C M. Study on synthesis and their FT-IR spectra of polyaniline doped with functional sulfonic acids [J]. J. Chin. Spectrosc. Lab., 2000, 17(2): 143-146
     (黄忠良, 杨春明. 掺杂功能磺酸的导电聚苯胺的合成及其红外光谱研究 [J]. 光谱实验室, 2000, 17(2): 143-146)
[11] Liu X W, Xiong J P, Lu Y W, et al. Study on corrosion electrochemical behavior of several different coating systems by EIS [J]. Prog. Org. Coat., 2009, 64: 497-503
[12] Del Grosso D M, Vogelsang J, Fedrizzi L, et al. Water up-take evaluation of new waterborne and high solid epoxy coatings. PartⅡ:electrochemical impedance spectroscopy [J]. Prog. Org. Coat., 1999,37: 69-81
[13] Zhang J T, Hu J M, Zhang J Q. Studies of water transport behavior and impedance models of epoxy-coated metals in NaCl solution by EIS [J]. Prog. Org. Coat., 2004, 51: 145-151
[14] Wagner C D. Zatko D A, Raymond R H. Use of the oxygen KLL auger lines in identification of surface chemical states by electron spectroscopy for chemical analysis [J]. Anal. Chem., 1980, 52:1445-1451
[15] Ardizzone S, Bianchi C L, Fadoni M, et al.Magnesium salts and oxide: an XPS overview [J]. Appl. Surf. Sci.,1997, 119(3): 253-259
[16] Haycock D E, Kasrai M, Nicholls C J.The electronic structure of magnesium hydroxide (brucite) using x-ray emission, x-ray photoelectron, and Auger spectroscopy [J]. J.Chem. Soc., 1978, 1791-1796
[17] Kumar S N, Bouyssoux G, Gaillard F. Electronic and structural characterization of electrochemically synthesized conducting polyaniline from XPS studies [J]. Surf. Interface Anal., 1990, 15: 531-536
[18] Sathiyanarayanan S, Syed Azim S, Venkatachari G. Corrosion resistant properties of polyaniline-acrylic coating on magnesium alloy [J].Appl. Surf. Sci., 2006,253:2113-2117

[1] XU Hongyan,LI Zhiyong. Galvanic Corrosion of AZ91D Magnesium Alloy[J]. 中国腐蚀与防护学报, 2013, 33(4): 298-305.
[2] ZHANG Yong, CHEN Yueliang, YU Dazhao, ZHANG Taifeng. INFLUENCE OF MICRO-ARC OXIDATION ON MECHANICAL PROPERTIES OF MAGNESIUM ALLOY AZ91D[J]. 中国腐蚀与防护学报, 2010, 30(3): 222-226.
[3] LIU Xiaolan, XU Yaxin, ZHANG Tao, SHAO Yawei, MENG Guozhe, WANG Fuhui. EFFECT OF ALTERNATING VOLTAGE (AV)MODULATED PASSIVATION ON CORROSION RESISTANCE OF AZ91D MAGNESIUM ALLOY
Ⅱ-Effect of Alternating Voltage (AV) Modulated Passivation on Surface Properties of AZ91D Magnesium Alloy
[J]. 中国腐蚀与防护学报, 2010, 30(3): 187-191.
[4] LI Duanyang, SHEN Bo, REN Yuping, PEI Wenli,YANG Zhongdong, WANG Jijie, QIN Gaowu. STRUCTURE AND CORROSION RESISTANCE OF ELECTROLESS PLATING Ni-P AND Ni-W-P COATINGS ON AZ91D MAGNESIUM ALLOY[J]. 中国腐蚀与防护学报, 2010, 30(3): 177-180.
[5] YANG Haiyan; GUO Xingwu; WU Guohua; DING Wenjiang. ELECTRODEPOSITION OF Zn ON AZ91D IN CHOLINE CHLORIDE-2UREA IONIC LIQUID[J]. 中国腐蚀与防护学报, 2010, 30(2): 155-160.
[6] LIU Xiaolan; WU Guixiang; XU Yaxin; ZHANG Tao; SHAO Yawei; MENG Guozhe; WANG Fuh. EFFECT OF MODULATED PASSIVATION ON CORROSION RESISTANCE OF AZ91D MAGNESIUM ALLOYⅠ-Effect of Modulated Passivation on Corrosion Behavior of AZ91D Magnesium Alloy[J]. 中国腐蚀与防护学报, 2010, 30(1): 41-45.
[7] Fengping Wang. Atmospheric Corrosion Behavior of AZ91D Magnesium Alloy in Beijing Area[J]. 中国腐蚀与防护学报, 2004, 24(6): 345-349 .
No Suggested Reading articles found!