Anti-corrosion, self-healing and environmental-friendly Ti3C2Tx/MgAl-LDH @epoxy composite organic coating for Mg alloy protection

doi:10.1007/s10853-023-08210-2

CQUET-IR

	Anti-corrosion, self-healing and environmental-friendly Ti3C2Tx/MgAl-LDH @epoxy composite organic coating for Mg alloy protection
	Wang, ZhiHeng 1; Fang, Liang 1,2; Wu, Fang 1,2; Ruan, HaiBo 3; Tang, Yuan 1; Hu, Jia 1,2; Zeng, XianGuang 4; Zhang, ShuFang 5; Luo, HaiJun 6
	2023-02
发表期刊	JOURNAL OF MATERIALS SCIENCE
ISSN	0022-2461
EISSN	1573-4803
卷号	58 期号:7 页码:3283-3306
摘要	In order to obtain compact epoxy-based organic coatings with superior corrosion resistance and self-healing performance, a novel Ti3C2Tx/LDH-epoxy hybrid coating was prepared on AZ31 magnesium alloy in this work. The layered double hydroxide (LDH) adopted here is MgAl-LDH intercalated by the cysteine acid (Cys), an environmentally friendly organic acid anions, as corrosion inhibitors, and the MXene (Ti3C2Tx)/MgAl-LDH (TML) heterostructure nanosheets were grown by a facile in situ assembled method. The morphology, composition, structure and the corrosion protection of the Ti3C2Tx/MgAl-LDH-epoxy (EP-TML) composite coatings were systematically investigated and compared with the other three epoxy-based coatings: bare waterborne epoxy resin (EP), Ti3C2Tx pigmented in EP (EP-T), MgAl-LDH in EP (EP-ML). It is found that the TML heterostructure has good dispersion and compatibility with the epoxy resin. The corrosion current density and the impedance value at low frequency (\|Z\|(0.01 Hz)) of the EP-TML composite coating are 1.4 x 10(-9) A/cm(2) and 1.66 x 10(7) omega cm(2), which is 4 orders of magnitude lower than that of the uncoated Mg substrate and 1-2 orders of magnitude higher than that of EP (8.7 x 10(5) omega cm(2)), respectively, indicating its excellent corrosion resistance. And the self-healing efficiency of EP-TML composite coating is found to be higher as 56.17% after 6 days immersion in a corrosive environment. The significant improvement of the anti-corrosion and self-healing performance of the EP-TML composite coating are mainly ascribed to the synergistic effect of barrier effect of TML and the corrosion inhibition effect of the cysteine acid encapsulated in MgAl-LDH. This work provides some valuable insights to widen the functional application of Ti3C2Tx and the design of highly corrosion-resistant and self-healing organic coatings for Mg alloys.
关键词	Amino acids Composite coatings Corrosion inhibitors Corrosion resistant coatings Epoxy resins Magnesium alloys Morphology Organic coatings Self-healing materials Anti-corrosion Composites coating Epoxy Epoxy-based Layered-double hydroxides Mg alloy Mg-Al layered double hydroxide Orders of magnitude Performance Self-healing
DOI	10.1007/s10853-023-08210-2
收录类别	SCIE ; EI
语种	英语
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000926193500004
出版者	SPRINGER
EI入藏号	20230613552325
原始文献类型	Article ; Early Access
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.cqcet.edu.cn/handle/39TD4454/17675
专题	重庆电子科技职业大学
作者单位	1.Chongqing Univ, Coll Phys, State Key Lab Power Transmiss Equipment & Syst Sec, Chongqing Key Lab Soft Condensed Matter Phys & Sma, Chongqing 400044, Peoples R China; 2.Chongqing Univ Liyang, Inst Smart City, Ctr Modern Phys, Jiangsu 213300, Peoples R China; 3.Chongqing Univ Arts & Sci, Coll Mat Sci & Engn, Chongqing 402160, Peoples R China; 4.Sichuan Univ Sci & Engn, Inst Mat Sci & Engn, Mat Corros & Protect Key Lab Sichuan Prov, Zigong 643000, Sichuan, Peoples R China; 5.Chongqing Coll Elect Engn, Chongqing 401331, Peoples R China; 6.Chongqing Normal Univ, Coll Phys & Elect Engn, Key Lab Optoelect Funct Mat, Chongqing 401331, Peoples R China
推荐引用方式 GB/T 7714	Wang, ZhiHeng,Fang, Liang,Wu, Fang,et al. Anti-corrosion, self-healing and environmental-friendly Ti3C2Tx/MgAl-LDH @epoxy composite organic coating for Mg alloy protection[J]. JOURNAL OF MATERIALS SCIENCE,2023,58(7):3283-3306.
APA	Wang, ZhiHeng.,Fang, Liang.,Wu, Fang.,Ruan, HaiBo.,Tang, Yuan.,...&Luo, HaiJun.(2023).Anti-corrosion, self-healing and environmental-friendly Ti3C2Tx/MgAl-LDH @epoxy composite organic coating for Mg alloy protection.JOURNAL OF MATERIALS SCIENCE,58(7),3283-3306.
MLA	Wang, ZhiHeng,et al."Anti-corrosion, self-healing and environmental-friendly Ti3C2Tx/MgAl-LDH @epoxy composite organic coating for Mg alloy protection".JOURNAL OF MATERIALS SCIENCE 58.7(2023):3283-3306.