A poly(butyl methacrylate)/graphene oxide/TiO2 nanocomposite coating with superior corrosion protection for AZ31 alloy in chloride solution

被引：51
作者：
Nazeer, Ahmed Abdel [1 ,2 ]
Al-Hetlani, Entesar [1 ]
Amin, Mohamed O. [1 ]
Quinones-Ruiz, Tatiana [3 ]
Lednev, Igor K. [3 ]
机构：
[1] Kuwait Univ, Fac Sci, Chem Dept, POB 5969, Safat 13060, Kuwait
[2] Natl Res Ctr, Phys Chem Dept, Electrochem Lab, PO 12622, Giza, Egypt
[3] SUNY Albany, 1400 Washington Ave, Albany, NY 12222 USA
来源：
CHEMICAL ENGINEERING JOURNAL | 2019年 / 361卷
关键词：
Graphene oxide; Poly(BMA); Mg-alloy (AZ31); Nanocomposite coating; Corrosion protection; MAGNESIUM ALLOY; MECHANICAL-PROPERTIES; RESISTANCE; CARBON; BEHAVIOR; NANOPARTICLES; RAMAN;
D O I：
10.1016/j.cej.2018.12.077
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A promising new nanocomposite coating based on poly(butyl methacrylate) (poly(BMA)), graphene oxide (GO) and TiO2 nanoparticles (NPs) (i.e., poly(BMA)/GO/TiO2 blend) is reported for magnesium alloy (AZ31) protection in 3.5% NaCl solution. A significant decrease in the corrosion current and a pronounced increase in the charge transfer resistance were observed using poly(BMA)/GO/TiO2 nanocomposite which acted as an excellent passivation layer for ion diffusion and corrosion. The addition of GOto poly(BMA) retarded the corrosive ions diffusion by forming longer and wrapped pathways. Embedding TiO2 NPs into the poly(BMA)/GO coating, resulted in charge transfer blockage at metal/electrolyte interface which suppressed metal dissolution.
引用
收藏
页码：485 / 498
页数：14
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