Hydrophobic epoxy resin coating with ionic liquid conversion pretreatment on magnesium alloy for promoting corrosion resistance

被引：72
作者：
Guo, Liting [1 ,2 ]
Gu, Changdong [1 ,2 ]
Feng, Jie [3 ]
Guo, Yongbin [4 ]
Jin, Yuan [4 ]
Tu, Jiangping [1 ,2 ]
机构：
[1] Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China
[2] Key Lab Adv Mat & Applicat Batteries Zhejiang Pro, Hangzhou 310027, Zhejiang, Peoples R China
[3] Zhejiang Univ Technol, Coll Mat Sci & Engn, Hangzhou 310014, Zhejiang, Peoples R China
[4] Zotye Automobile Co Ltd, Hangzhou 310018, Zhejiang, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2020年 / 37卷
关键词：
Mg alloy; Deep eutectic solvent; Corrosion resistance; Double layered hybrid coating; DEEP EUTECTIC SOLVENTS; ELECTROLYTIC OXIDATION COATINGS; MG ALLOY; SUPERHYDROPHOBIC SURFACE; WATER-ABSORPTION; FILM FORMATION; PROTECTION; FABRICATION; MICROSTRUCTURE; MECHANISM;
D O I：
10.1016/j.jmst.2019.06.024
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A hydrophobic epoxy resin coating with an environmental-friendly deep eutectic solvent (DES)-based conversion pretreatment was proposed to enhance the corrosion resistance of magnesium alloys. The hydrophobic epoxy resin coatings on the AZ31B magnesium alloy with and without the DES-based conversion pretreatment were thoroughly compared. It is found that the DES-based conversion film on the AZ31B magnesium alloy is mainly composed of MgH2, MgO and MgCO3. Furthermore, the conversion film possesses porous structure, which provides more anchor points for the following epoxy resin coating. However, without the DES-conversion pretreatment, the epoxy resin is difficult to be attached on the substrate during the dip-coating process. The double layered hybrid coating system promotes the corrosion resistance of the magnesium alloys significantly, which can be ascribed to the unique architecture and component including the hydrophobicity of the surface layer, the dense and interlocked epoxy resin, and the corrosion resistant DES-based conversion pretreatment. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
引用
收藏
页码：9 / 18
页数：10
相关论文
共 61 条
[31]   Passive film formation in dilute ionic liquid solutions on magnesium Alloy AZ31 [J].
Latham, Julie-Anne ;
Howlett, Patrick C. ;
MacFarlane, Douglas R. ;
Forsyth, Maria .
ELECTROCHEMISTRY COMMUNICATIONS, 2012, 19 :90-92
[32]   Formation and properties of stannate conversion coatings on AZ61 magnesium alloys [J].
Lin, CS ;
Lin, HC ;
Lin, KM ;
Lai, WC .
CORROSION SCIENCE, 2006, 48 (01) :93-109
[33]   Unveiling the inhibition mechanism of an effective inhibitor for AZ91 Mg alloy [J].
Lu, Xiaopeng ;
Li, Yan ;
Ju, Pengfei ;
Chen, Yan ;
Yang, Jingshuai ;
Qian, Kun ;
Zhang, Tao ;
Wang, Fuhui .
CORROSION SCIENCE, 2019, 148 :264-271
[34]   3D reconstruction of plasma electrolytic oxidation coatings on Mg alloy via synchrotron radiation tomography [J].
Lu, Xiaopeng ;
Blawert, Carsten ;
Tolnai, Domonkos ;
Subroto, Tungky ;
Kainer, Karl Ulrich ;
Zhang, Tao ;
Wang, Fuhui ;
Zheludkevich, Mikhail L. .
CORROSION SCIENCE, 2018, 139 :395-402
[35]   Plasma electrolytic oxidation coatings on Mg alloy with addition of SiO2 particles [J].
Lu, Xiaopeng ;
Blawert, Carsten ;
Huang, Yuanding ;
Ovri, Henry ;
Zheludkevich, Mikhail L. ;
Kainer, Karl Ulrich .
ELECTROCHIMICA ACTA, 2016, 187 :20-33
[36]   Enhanced Bioactivity of Mg-Nd-Zn-Zr Alloy Achieved with Nanoscale MgF2 Surface for Vascular Stent Application [J].
Mao, Lin ;
Shen, Li ;
Chen, Jiahui ;
Wu, Yu ;
Kwak, Minsuk ;
Lu, Yao ;
Xue, Qong ;
Pei, Jia ;
Zhang, Lei ;
Yuan, Guangyin ;
Fan, Rong ;
Ge, Junbo ;
Ding, Wenjiang .
ACS APPLIED MATERIALS & INTERFACES, 2015, 7 (09) :5320-5330
[37]   Characterization of chromate conversion coating on AA7075-T6 aluminum alloy [J].
Meng, QJ ;
Frankel, GS .
SURFACE AND INTERFACE ANALYSIS, 2004, 36 (01) :30-42
[38]   Formation mechanism of Mg-Al layered double hydroxide-containing magnesium hydroxide films prepared on Ca-added flame-resistant magnesium alloy by steam coating [J].
Nakamura, Kae ;
Tsunakawa, Mika ;
Shimada, Yuta ;
Serizawa, Ai ;
Ishizaki, Takahiro .
SURFACE & COATINGS TECHNOLOGY, 2017, 328 :436-443
[39]   Effects of surface modification with amino branched polydimethylsiloxane (ABP) on the corrosion protection of epoxy coating [J].
Shon, MinYoung ;
Kwon, HyukSang .
CORROSION SCIENCE, 2007, 49 (11) :4259-4275
[40]   Synthesis and characterization of layer-by-layer assembled magnesium zinc molybdate nanocontainer for anticorrosive application [J].
Singh, H. K. ;
Yeole, K. V. ;
Mhaske, S. T. .
CHEMICAL ENGINEERING JOURNAL, 2016, 295 :414-426
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