Study on corrosion protection properties of PANI/ZnO/Zn/Graphene coating on aluminum alloy

被引：17
作者：
Meng, Xiangfeng [1 ]
Hou, Lihuan [1 ]
Jin, Hong [1 ]
Li, Wenjuan [1 ]
Wang, Shaoqi [6 ]
Wang, Zhiping [1 ]
An, Junwei [1 ,2 ,5 ]
Wen, Chen [3 ]
Ji, Guojun [6 ]
Xu, Xiuqing [4 ]
Zhou, Dan [1 ]
机构：
[1] Jining Normal Univ, Sch Chem & Chem Engn, Sch Phys & Elect Informat Engn, Key Lab Mineral Soil Qual Modificat & Comprehens U, Ulanqab 012000, Peoples R China
[2] Nanchang Inst Technol, Energy & Environm Engn Inst, Nanchang 311033, Peoples R China
[3] Beijing Spacecrafts Mfg Co Ltd, China Acad Space Technol, Beijing 100090, Peoples R China
[4] CNPC Tubular Goods Res Inst, State Key Lab Performance & Struct Safety Petr Tub, Xian 710077, Peoples R China
[5] Inner Mongolia Qingmeng Graphene Technol Co Ltd, Xingwangjiao Ind Pk,Xinghe Cty, Ulanqab 013650, Inner Mongolia, Peoples R China
[6] Inner Mongolia Univ Technol, Coll Chem Engn, Hohhot 010051, Peoples R China
来源：
DIAMOND AND RELATED MATERIALS | 2023年 / 136卷
关键词：
PANI; ZnO; Graphene; Aluminum alloy; Corrosion resistance; NANOCOMPOSITE COATINGS; MECHANICAL-PROPERTIES; ANTICORROSION; EPOXY; POLYANILINE; STEEL; PERFORMANCE; COMPOSITE; COPPER; INHIBITION;
D O I：
10.1016/j.diamond.2023.110067
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A PANI/ZnO/Zn/Graphene composite anti-corrosion coating was uniformly brushed on the surface of 2A12 aluminum alloy. The anti-corrosion performance of the coating in 3.5 % NaCl solution was studied. The potentiodynamic polarization of the 2A12 aluminum alloy coated with the PANI/ZnO/Zn/Graphene composite revealed that the anti-corrosion performance was greatly improved by prolonging the tortuosity of diffusion pathways for corrosive reactants through graphene, when compared to those with PANI/ZnO/Zn coating and 2A12 aluminum alloy. The 3.5 % NaCl solution immersion testing of PANI/ZnO/Zn/Graphene coating showed that the anti-corrosion performance of the coating was weakened by the solute immersion in the early stage of the experiment, while the pores and defects of the coating were gradually filled with corrosion products after immersion for 480 h, resulting in further improvement of corrosion resistance. The EIS results showed that the total impedance of PANI/ZnO/Zn/Graphene coating is greater than PANI/ZnO/Zn coating, and the impedance module value can reach 1.98 x 105 & omega;cm2. In general, it is concluded that PANI/ZnO/Zn/Graphene coating have high protective properties.
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页数：6
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