Corrosion resistance and mechanism of one-component organic Zn15Al-rich coating

被引：12
|
作者：
Xu, Long [1 ,2 ]
Liu, Fuchun [1 ,2 ]
Han, En-Hou [1 ,2 ]
Ke, Wei [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
来源：
PROGRESS IN ORGANIC COATINGS | 2019年 / 132卷
关键词：
Aluminum; Zinc; SEM; XRD; Paint coatings; Cathodic protection; AL-MG COATINGS; ATMOSPHERIC CORROSION; ZN-AL; SURFACE MODIFICATION; ZINC; STEEL; BEHAVIOR; ALLOY; DEGRADATION; PROTECTION;
D O I：
10.1016/j.porgcoat.2019.04.008
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The anti-corrosion performance of Zn and Zn15Al organic coating was investigated mainly by neutral salt spray test and electrochemical impedance spectroscopy. X-ray diffraction, scanning electron microscope and energy disperse spectroscopy were applied to analyze the corrosion behavior of the coating during the test. The facilitated formation of protective corrosion product simonkolleite on the Zn15Al coating surface was observed. Also, layered double hydroxides (LDH) consisting of Zn2+ and Al3+ were detected at the interface of coating/steel substrate of Zn15Al. This LDH was believed to function as ion exchanger that prevents Cl- from contacting the steel substrate.
引用
收藏
页码：305 / 315
页数：11
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