Corrosion resistance of MWCNTs-nanoZnO composite reinforced chromium-free Zn-Al coating

被引：0
作者：
Fu, Yu [1 ]
Zhao, Junwen [1 ]
Li, Xujia [1 ]
Peng, Yiwen [1 ]
机构：
[1] Southwest Jiaotong Univ, Sch Mat Sci & Engn, Key Lab Adv Technol Mat, Minist Educ, Chengdu, Peoples R China
来源：
ANTI-CORROSION METHODS AND MATERIALS | 2024年 / 71卷 / 06期
关键词：
MWCNTs; Nano-ZnO; Chromium-free zinc-aluminum coating; Polarization curve; Impedance spectroscopy; LOCALIZED CORROSION; CARBON NANOTUBES; GRAPHENE; PROTECTION; BEHAVIOR; OXIDE; ZINC; PERFORMANCE; ALUMINUM; LAYER;
D O I：
10.1108/ACMM-01-2024-2948
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
PurposeThis paper aims to prepare high corrosion-resistant chromium-free zinc-aluminum (Zn-Al) coatings reinforced with multi-walled carbon nanotubes (MWCNTs) and nano-ZnO particle composites.Design/methodology/approachThe morphology, composition and corrosion resistance of the coatings were analyzed by electrochemical tests, water contact angle tests, immersion tests, scanning electron microscopy/energy dispersive spectrometer and X-ray diffraction.FindingsThe composite coating with 0.3% MWCNTs and 0.5% nano-ZnO particles demonstrated both high shielding performance and cathodic protection performance, which was attributed to the porosity filling of MWCNTs and nano-ZnO particles together with the electrical connection of MWCNTs between the zinc and aluminum powders.Originality/valueThis work laid an experimental foundation for the preparation and corrosion mechanism of high corrosion-resistant chromium-free Zn-Al coating reinforced with MWCNTs and nano-ZnO particles.
引用
收藏
页码：640 / 649
页数：10
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