Materials
·
2023
·Vol. 16
·期 16
·5511
·
IF 3.4
Anyu Yue,Yong Cao,Yi Zhang,Shenggang Zhou
The Mg-Li alloy stands as the lightest metallic structural material known to date, finding a wide range of applications. However, its development has been hindered by its susceptibility to oxidation and corrosion. In this study, we aimed to address this issue by employing electroless deposition to form a protective zinc layer on the surface of a magnesium–lithium alloy. The optimization of the zinc layer was achieved through varying parameters such as the zinc dipping time (1~10 min), temperature (20~70 °C), and zinc content (20~200 g/L). Surface characterization was performed using scanning electron microscopy (SEM) and X-ray diffraction, while electrochemical tests and scratch tests were conducted to evaluate corrosion resistance and coating adhesion. The results demonstrated the successful formation of a uniform and dense pure zinc layer on the surface of the Mg-Li alloy when the zinc-dipping time was set at 5 min, the temperature was at 30 °C, and the zinc content was at 50 g/L. Under these conditions, the corrosion potential of the Mg-Li alloy experienced the greatest positive shift, reaching as high as −1.38 V. Additionally, the corrosion current was minimized, measuring at 2.78 × 10−6A/cm2. Furthermore, the maximum arc tolerance radius was observed. Consequently, the electroless deposition of zinc onto Mg-Li alloys significantly improves their corrosion resistance and bonding, opening up new prospects for the application of zinc-plated Mg-Li alloys.Keywords:Mg-Li alloy;electroless-deposited;zinc coating;corrosion resistance
研究领域:
材料科学
·
腐蚀工程
·
表面工程
✓ 已验证
DOI
PubMed
高影响因子
MATERIALS SCIENCE AND TECHNOLOGY
·
2017
·
IF 1.538
Sirong Yu,Hao Li
In this work, a simple method, including electrodeposition and chemical modification, for fabrication of a superhydrophobic and oleophobic coating on steel substrate is reported. The surface morphology of this coating showed concave structure, and the contact angles of water and glycerol on this coating surface were about 153.57° and 149.32°, respectively. In addition, the water droplet was easy to roll on this coating surface, and the sliding angle was smaller than 10°. The contact angle of the water/ethanol droplet with different surface tension, from 56 to 36 mN m−1, was also >130° on this coating surface, indicating this as superhydrophobic and oleophobic coating surface with good lyophobicity. Moreover, this coating surface had excellent non-sticking property for the water droplet under a certain external pressure, self-cleaning property and long-term stability.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Hao Li,Sirong Yu,Jinhui Hu,Xiaoli Yin
Modifier-free superhydrophobic surfaces have attracted much attention since their discovery due to the potential for applications. Although there is an emerging consensus that modifier-free structured hydrophilic surfaces can achieve superhydrophobic , how the surface morphology influence their wettability as well as why modifier-free structured surfaces can achieve superhydrophobic are lacking. In this work, we fabricated many Cu-Zn coatings with various surface morphologies on steel substrate by tuning electrodeposition parameters including the current density , the Zn 2+ /Cu 2+ molar ratio, and the electrodeposition time. We found that these freshly prepared electrodeposited Cu-Zn coatings were superhydrophilic after dried. Interestingly, after storage in air for more than 60 days, these modifier-free hierarchical structured Cu-Zn coatings became superhydrophobic with the maximum water contact angle of 154.73° and the minimum sliding angle of ~6.5°. We experimentally demonstrated that both the hierarchical structure and the chemical composition (the formation of CuO-ZnO and the oxygen adsorption) contribute to the superhydrophobicity of the modifier-free Cu-Zn coating. Furthermore, this modifier-free superhydrophobic Cu-Zn coating presents excellent durability, self-cleaning, anti-corrosion, and anti-scaling properties.
研究领域:
材料科学
·
表面工程
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2024
·
IF 4.1
Xin Zhang,Song Li,Jie Yuan,Zhongning Shi
The effect of magnesium chloride (MgCl 2 ) on the electrodeposition of zinc in 1,3-dimethyl-2-imidazolidinone (DMI)/ZnCl 2 solvate ionic liquids was investigated. Cyclic voltammetry and Chronoamperometry are employed to study the electrochemical behavior of Zn. The crystal structure, microscopic morphology, and roughness of Zn coatings were measured by X-ray diffraction (XRD), scanning electron microscopy (SEM), and Non-contact Optical Surface Profiler (OSP). The results reveal that adding MgCl 2 is favorable to the electrodeposition of Zn and leads to the formation of a new zinc-containing species in the electrolyte, which was confirmed by Raman spectra. Importantly, this addition does not affect the nucleation mechanism of zinc. Furthermore, the zinc grows preferentially on the (1 0 1) plane and a more smooth and uniform zinc coating was obtained. Corrosion resistance testing is conducted in a 3.5 wt% NaCl solution using the Tafel method. Coatings obtained at 4 mA/cm 2 and 343 K with 0.1 mol/L MgCl 2 addition exhibit lower corrosion current density of 38.10 μA/cm 2 compared to zinc coatings obtained without MgCl 2 .
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2024
·
IF 4.3
Shiyuan Zhu,Peng Liu,Qiongyu Zhou,Qianjun Deng,Yuanyuan Li,Jiacheng Wang,Zuo He,Changchun Tian,Xiaofen Wang
Zn coating is a typical anti-corrosion coating for carbon steel. Considering the sacrificial nature of Zn coating, it is essential to enhance the corrosion resistance for the long-term performance in the practical application. In this work, two-dimensional carbon nanoplatelets (2D-CNs) with nanometer thickness (∼100 nm) and ultra-large lateral size (10–40 μm) and Mn element have been successfully co-deposited with Zn onto low carbon steel by a simple electrodeposition method. Results show that the Zn-Mn/2D-CNs composite coating is composed of Zn phase, ZnMn 3 phase and a small number of 2D-CNs. The Zn-Mn/2D-CNs composite coating exhibits a modified surface quality with ultrafine grains and smaller roughness (Ra = 176 nm, Rq = 131 nm) when compared with that of Zn coatings (Ra = 798 nm, Rq = 684 nm). Besides, the inert 2D-CNs within the composite coating can act as the corrosion barriers. Therefore, the Zn-Mn/2D-CNs composite coating has excellent anti-corrosion performance, owning the lowest corrosion current densities i corr (9.2 μA cm −2 ) and maximum coating resistance R coat (1.2 kΩ·cm −2 ) and charge transfer resistance R ct (3.5 kΩ·cm −2 ), associated with its modified microstructure, Mn element with passivation property, and 2D-CNs barriers. These results demonstrate the desirable potentiality of inert 2D carbon materials in the electrodeposition of Zn-based coating for improving the corrosion resistance.
研究领域:
材料科学
·
防腐蚀工程
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Xiaodong Wang,Jun Shen,Dezong Zheng,Fei Qi,Lin Li
Multifunctional packaging materials made from biomass resources are key to achieving packaging storage and environmental friendliness. The aim of this study is to prepare high-performance cellulose-based packaging films to improve the high-value utilization of cellulose resources. In this paper, the blended films of sodium carboxymethyl cellulose (CMC) and poly(vinyl alcohol) (PVA) were used as the substrate and doped with tannic acid (TA)-coated cellulose nanocrystals (CNC@TA). Then, zinc ions (Zn 2+ ) were decorated on the film surface by adsorption self-assembly. The modified films ( Z -CPC@T 5 films) were prepared with excellent mechanical properties (tensile strength and elongation at break of 73.85 MPa and 19.68 %, respectively). Meanwhile, the presence of CNC@TA provided the films with UV and oxidation resistance. In addition, the zinc coating formed on the film surface conferred water resistance, hydrophobicity, and structural stability (water contact angle up to 97.09°). The modified films also showed excellent antimicrobial and water-vapor barrier properties. The modified films preserved cherries for at least 16 days with a quality retention of 87.20 %. In addition, cytotoxicity tests confirmed the non-toxic properties of the modified films. Overall, this strategic fusion of internal and external dual crosslinking expanded the application potential of active packaging materials.
研究领域:
材料科学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2017
·Vol. 41
·期 13
·5436-5444
·
IF 3.269
Hao Li,Sirong Yu
A superhydrophobic Cu–Zn coating was fabricated on a steel surface by facile one-step electrodeposition, without being chemically modified by a low surface energy material. It was noted that three-level hierarchical structures, just like the surface morphology of a lotus leaf, were formed on the Cu–Zn coating surface via scanning electron microscopy (SEM) images. The water contact angle of the prepared Cu–Zn coating surface was 153.40°, and the sliding angle was less than 10°. From the aspect of chemical composition, it was characterized to confirm that the oxidation of Cu and Zn, and oxygen adsorption were the reasons for the superhydrophobicity. In terms of the surface morphology, based on the classical Wenzel and Cassie models, an idealized three-dimensional (3D) model was fabricated to demonstrate the rationality of the superhydrophobicity without chemical modification. Moreover, this three-level hierarchical Cu–Zn coating had stable superhydrophobicity, excellent self-cleaning properties, and stability.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2020
·
IF 3.724
Xunwen Su,Liqun Zhu,Weiping Li,Haining Chen,Rui Cao,Huicong Liu
Al 2 O 3 -contained zinc coatings with enhanced protective and mechanical performances were prepared on NdFeB magnets by in situ electro-deposition methods from the zinc plating baths containing alumina sol. The positively charged alumina sol particles migrate to the NdFeB cathode and then gel along with zinc on the cathode surface, which changes the electro-deposition process of zinc. As a result, the surface morphology and phase structure of the zinc coating is significantly changed. The incorporation of alumina particles achieves a denser zinc coating with a smaller grain size and the hardness is well improved. By increasing alumina sol concentration in the plating bath, the micro-hardness and wear resistance of the zinc coatings gradually increased. What's more, the alumina sol addition also improved the corrosion resistance of zinc coatings. When 20 wt. % alumina sol is added, the corrosion potential of the zinc coating is positively shifted for 168 mV and the corrosion current was more than one order magnitude lower than the blank one. Therefore, this approach shows great promise to obtain alumina-contained zinc coatings with enhanced anti-corrosion properties and mechanical properties.
研究领域:
材料科学
·
电化学
·
表面工程
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Meng Ding,Xixun Shen
A GO/MPTS coating on a Zn coating electrodeposited on carbon steel was prepared by immersing zinc samples into suspension of graphene oxide/(3-mercaptopropyl) methyldimethoxysilane GM and then drying at 80°C. The silanol groups reacted with oxygen-containing functional groups on the GO during the hydrolysis process, and the GO was stacked layer by layer to construct a dense organic coating over the etched zinc surface. The synthesized GM coatings were characterized by FTIR, XRD, Raman spectroscopy and SEM. The corrosion behaviour of the galvanized carbon steel (GCS) and GCS coated with a GM composite coating exposed to a 3.5% NaCl solution were studied by potentiodynamic polarization and EIS. The results confirm that the GM coating can effectively protect GCS. Combined with the physical characterization of the GM-coated GSC explaines its markedly increased corrosion resistance.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2023
·
IF 6
Daiyun Gu,Jianru Li,Cunying Xu,Shuxian Wang,Guilin Xiang,Wenkang Chen,Qibo Zhang,Yixin Hua,Yan Li
The influence of existing form of different zinc compounds on the electrochemical behavior of zinc was investigated in choline chloride-urea (ChCl-urea) deep eutectic solvent (DES). Raman and ESI-MS analyses indicate that complexes [ZnCl 4 ] − , [Zn(H 2 O)Cl 3 ] − and [ZnO⋅urea⋅Cl] − are presented in the ChCl-urea DES containing ZnCl 4 , ZnSO 4 ⋅7H 2 O and ZnO, respectively. The zinc compounds were found to vary reduction overpotential of Zn(II) ions in the order ZnO > ZnSO 4 ⋅7H 2 O > ZnCl 4 , while their reduction and diffusion rate in a sequence ZnSO 4 ⋅7H 2 O > ZnCl 4 > ZnO. This may be due to the formation of various Zn(II) complexes and oligomers. The chronoamperometric transient analysis shows that Zn electrodeposition in ChCl-urea DES with ZnCl 2 or ZnO as a precursor follows instantaneous nucleation mode, while ZnSO 4 ⋅7H 2 O is changed to a more progressive one. Besides, the zinc compounds can alter the rate of nucleation, influencing the morphology of zinc deposits. The ChCl-urea DES containing ZnSO 4 ⋅7H 2 O or ZnO is conducive to electrodeposition of a smooth and dense zinc coating. The XRD analysis of the deposits displays that part of the deposited zinc is able to alloy with copper substrate to form the Zn-Cu surface alloy, and the amount of the alloy depends on zinc compound. These findings promise a cheap and simple route for production of Zn coating directly form Zn secondary resources.
研究领域:
电化学
·
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）