Long-term corrosion protection of Q235 steel by graphene oxide composite coating

被引：5
|
作者：
Li, Hao [1 ]
Pu, Jibin [2 ]
Zhang, Renhui [3 ]
机构：
[1] Southwest Jiaotong Univ, Sch Mat Sci & Engn, Key Lab Adv Technol Mat, Minist Educ, Chengdu 610031, Sichuan, Peoples R China
[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Related Technol, Zhejiang Key Lab Marine Mat & Protect Technol, Ningbo 315201, Zhejiang, Peoples R China
[3] East China JiaoTong Univ, Sch Mat Sci & Engn, Nanchang 330013, Jiangxi, Peoples R China
来源：
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES | 2019年 / 7卷 / 04期
基金：
中国国家自然科学基金;
关键词：
graphene oxide; corrosion; salt spray; Q235; steel; RAMAN-SPECTROSCOPY; OXIDATION BARRIER; QUANTUM DOTS; SINGLE-LAYER; MULTILAYER; BEHAVIOR; PHASE;
D O I：
10.1088/2051-672X/ab58bd
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this work, graphene oxide (GO) and graphene oxide quantum dots (GOQDs) was successfully fabricated by the modified Hummer's method. Then, the GOQDswere introduced into Zn@epoxy composite and characterized by experimental approach. The microstructure and composition of GO and GOQDs was characterized using XRD, Raman and TEM. The corrosion resistance of the graphene@Zn@epoxy composite coating was analyzed by salt spray and potentiodynamic polarization tests. Results revealed that the incorporation of the GOQDs with a diameter of 15 nm into the Zn@epoxy matrix greatly improved the anti-corrosion property of the Zn@epoxy matrix. It was observed that GOQDs well inhibited the formation of conductive pathways compared to Zn@epoxy composite coating, and exhibited superior corrosion resistance even after 792 h salt spray test.
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页数：12
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