Preparation of graphene nanoplate added zinc-rich epoxy coatings for enhanced sacrificial anode-based corrosion protection

被引：106
作者：
Cao, Xiangkang [1 ,2 ]
Huang, Feng [1 ]
Huang, Chen [1 ]
Liu, Jing [1 ]
Cheng, Y. Frank [2 ]
机构：
[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Hubei, Peoples R China
[2] Univ Calgary, Dept Mech Engn, Calgary, AB T2N 1N4, Canada
来源：
CORROSION SCIENCE | 2019年 / 159卷
关键词：
Zinc-rich coatings; Graphene nanoplates; Composite coatings; Sacrificial anode; Corrosion protection; ELECTROCHEMICAL ACTION; PIPELINE STEEL; CARBON-STEEL; PERFORMANCE; RESISTANCE; OXIDE; IMPROVEMENT; BEHAVIOR; LAYER; CLAY;
D O I：
10.1016/j.corsci.2019.108120
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, graphene nanoplate (GNP) added zinc-rich epoxy (ZRE) composite coatings were prepared. Electrochemical measurements, surface characterization and galvanic corrosion testing were conducted to investigate the GNP-enhanced zinc (Zn) sacrificial anode-based corrosion protection of the coatings. The dispersed GNP serves as electronic channels to connect Zn particles to form a homogeneous Zn-GNP-Zn network in the coating matrix, resulting in an enhanced Zn sacrificial anode-based corrosion protection. The role of GNP in improved coating performance depends on Zn content in the coating. The prepared GNP-ZRE composite coatings also possess an enhanced delamination resistance.
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页数：12
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