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.

引用

页数：12

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