Corrosion protection enhancement of Mg alloy WE43 by in-situ synthesis of MgFe LDH/citric acid composite coating intercalated with 8HQ

被引：36
|
作者：
Tan, Jesslyn K. E. [1 ]
Birbilis, N. [2 ]
Choudhary, S. [3 ]
Thomas, S. [3 ]
Balan, P. [1 ]
机构：
[1] Monash Univ Malaysia, Sch Engn, Chem Engn, Jalan Lagoon Selatan, Selangor 47500, Malaysia
[2] Australian Natl Univ, Coll Engn & Comp Sci, Canberra, ACT 2601, Australia
[3] Monash Univ, Dept Mat Sci & Engn, Melbourne, Vic 3800, Australia
来源：
CORROSION SCIENCE | 2022年 / 205卷
关键词：
Magnesium alloy; Layered double hydroxide; Citric acid; 8-hydroxyquinoline; Surface modification; Corrosion; LAYERED DOUBLE HYDROXIDE; CITRIC-ACID; MAGNESIUM ALLOY; 8-HYDROXYQUINOLINE; DEGRADATION; RESISTANCE; SPECIATION; EFFICIENCY; INHIBITOR; CHEMISTRY;
D O I：
10.1016/j.corsci.2022.110444
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A composite coating consisting of Mg-Fe LDH intercalated with 8-hydroxyquinoline (8HQ) and modified with citric acid (CA) layer is constructed on Mg alloy WE43 via combination of electrodeposition, hydrothermal and anion-exchange. In view of CA and their small "island-shaped" surface morphology, the CA coating could provide MgFe LDH film with physical and chemical shielding. The intercalation of 8HQ into the MgFe LDH/0.05CA saw further enhancement in corrosion resistance as 8HQ hinders anodic and cathodic dissolution reaction. Furthermore, the MgFe-8HQ LDH/0.05CA coating presented a possible self-healing based on the 7-day EIS study, establishing as a potential coating for biomedical implant applications.
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页数：14
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