PROGRESS IN ORGANIC COATINGS
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2025
·
IF 7.3
Lan-Yue Cui,Han-Bing Chen,Bai-Ning Shi,Shuo-Qi Li,Cheng-Bao Liu,Hai-Ming Yu,Yu Wang,Fen Zhang,Wei-Xiang Sun,Rong-Chang Zeng
Biodegradable magnesium (Mg) alloys have received widespread attention as bone fixation implants due to their excellent biocompatibility and mechanical compatibility. However, their rapid corrosion rate in solutions containing Cl − ions and the risk of postoperative bacterial infections limit their application. Herein, a quercetin (Qu) loaded polyelectrolyte complex was fabricated on the micro-arc oxidation coated AZ31 alloy (referred to as the PVP/PEI-ICG/Qu coating) to regulate the degradation of the Mg matrix and avoid bacterial infections. The results displayed that the PVP/PEI-ICG/Qu coated substrate significantly reduced the corrosion current density to (2.86 ± 1.89) × 10 −7 A·cm −2 , which was an order of magnitude lower than that of the AZ31 alloy [(8.86 ± 1.35) × 10 −6 A·cm −2 ], due to the combined physical barriers provided by the PVP/PEI complex, the underlying MAO layer and the self-densification effect. Qu was loaded in a single step and protected by polyelectrolyte network, allowing for its release in response to near-infrared light (NIR) irradiation. Additionally, the antibacterial rate of the PVP/PEI-ICG/Qu coating reached 99.8 % ( S. aureus ) and 99.9 % ( E. coli ), thanks to the synergistic effects of Qu and its photothermal and photodynamic properties stimulated by 808 nm NIR irradiation, with a photothermal conversion efficiency of 45.2 %. Moreover, the coating demonstrated excellent biocompatibility, enhancing cell viability by up to 120.8 %. This antibacterial composite coating with good corrosion resistance and antibacterial activity provides a promising strategy for developing antibacterial Mg-based orthopedic implants.
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DOI
高影响因子
POLYMER INTERNATIONAL
·
2022
·Vol. 71
·期 11
·1278-1286
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IF 3.213
Miao Dai,Siyuan Li,Yan Cui,Wei Zhang,Hui Shi,Kai Pan,Wei Wei,Xiaoya Liu,Xiaojie Li
Although magnesium (Mg) and its alloys are promising biodegradable materials for orthopedic implants, rapid and uncontrollable degradation of Mg is still a challenge for clinical applications. In this work, electroactive polymer coatings were prepared to improve the corrosion resistance and cytocompatibility of Mg alloys. Amphiphilic electroactive tetraaniline (TANi)-conjugated poly( γ -glutamic acid) ( γ -PGA) with various TANi modification rates ( γ -PGA–TANi 10 , γ -PGA–TANi 20 , γ -PGA–TANi 27 ) were first synthesized. γ -PGA–TANi colloidal particles, prepared by a self-assembly method, were then coated on Mg alloys by electrophoretic deposition. The prepared γ -PGA–TANi coatings showed a homogeneous surface and good adhesion on AZ31 Mg alloys. Electrochemical analysis and in vitro immersion tests revealed that γ -PGA–TANi-coated Mg exhibited superior corrosion resistance, which was mainly attributed to the electroactivity of the γ -PGA–TANi coatings, leading to the rapid formation of a passivation layer to prevent the further corrosion of Mg alloys. Furthermore, the γ -PGA–TANi alloy coatings efficiently regulated Mg 2+ release and pH value of coated Mg alloy during immersion for 40 days. In comparison with bare Mg alloy, the coated Mg alloy also showed better cytocompatibility, where L929 cells emerged with a good cell adhesion and viability. These results indicate that electroactive γ -PGA–TANi coatings have promising potential for corrosion resistance of Mg alloys. © 2022 Society of Industrial Chemistry.
研究领域:
材料科学
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生物医学工程
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腐蚀科学
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表面工程
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DOI
高影响因子
Journal of Magnesium and Alloys
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2020
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IF 7.115
Xin Wang,Chuan Jing,Yuxiang Chen,Xiushuang Wang,Gang Zhao,Xing Zhang,Liang Wu,Xiaoying Liu,Biqin Dong,Yuxin Zhang
Magnesium alloys, the advanced lightweight structural materials, have been successfully applied in the manufacturing field. Unfortunately, their poor corrosion resistance restrains the potential wide applications. In this work, anti-corrosion coatings were fabricated via the in-situ growth of the corrosion inhibitors intercalated magnesium-aluminum layered double hydroxide (Mg–Al LDH) on AZ31 magnesium alloy and then post-sealing it by a super-hydrophobic coating. SEM, XRD, EDS, FTIR, XPS and contact angle test were conducted to analyze physical/chemical features of these coatings. Potentiodynamic polarization curves and electrochemical impedance spectroscopy were recorded to assess the anti-corrosion performance of prepared coatings. Surprisingly, Mg–Al LDH with molybdate intercalation and lauric acid modification achieves the excellent corrosion inhibition performance (99.99%) due to the multicomponent synergistic effect such as the physical protection of Mg–Al LDH, the corrosion inhibition of molybdate and super-hydrophobic properties of lauric acid. This work presents a scientific perspective and novel design philosophy to fabricate the efficient anti-corrosion coating to protect magnesium alloys and then expand their potential applications in other field.
研究领域:
材料科学
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腐蚀与防护
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表面工程
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DOI
高影响因子
APPLIED SURFACE SCIENCE
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2019
·
IF 5.155
Meiling Zhang,Mingwu Zhao,Rongrong Chen,Jingyuan Liu,Qi Liu,Jing Yu,Rumin Li,Peili Liu,Jun Wang
It has been broadly studied to ensure the protection of magnesium alloy by superhydrophobic surface. In this work, the layered TiO 2 was prepared in response to the AZ31 Mg alloy by hydrothermal method and loaded wrinkled silicon dioxide (KCC-1) on the layer by electrostatic self-assembly to build a pod-like structure. After modification by stearic acid, the surface shows superhydrophobicity. The morphology, structure and composition of the surface were characterized by scanning electron microscope (SEM), the X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR), respectively. The anticorrosive effect of the superhydrophobic surface was investigated by detecting the electrochemical impedance spectroscopy and polarization curves in 3.5 wt% NaCl solution for a week. Superhydrophobic surfaces also exhibited chemical stability, physical stability and ultraviolet light tolerance. In addition, the TiO 2 containing in the film had a certain photocatalytic performance on decomposition of organic contaminants. Combining the self-cleaning property, the surface showed excellent adaptability to the outdoor environment.
研究领域:
材料科学
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腐蚀与防护
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表面工程
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DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2025
·
IF 6.1
Jie Qin,Zhihan Zhang,Wenhui Yao,Liang Wu,Long Li,Ke Wang,Yuan Yuan,Zhihui Xie,Yuansheng Yang,Viswanathan S. Saji,Fusheng Pan
Conventional Mg Al layered double hydroxide (LDH) monolayers offer insufficient space to accommodate the lubricants required for slippery liquid-infused porous surfaces (SLIPSs). Therefore, Mg-MOF-74 was deposited onto the as-prepared Mg Al LDH, to construct an LDH/MOF composite-layered structure, which increased the storage capacity of lubricants and imparted AZ31 Mg alloy with enhanced anti-corrosion and self-healing performance. Notably, the as-synthesized Mg-MOF-74 featured abundant open metal sites, facilitating the loading of 8-hydroxyquinoline (8-HQ) corrosion inhibitor. Specifically, 8-HQ could be loaded both in the interlayers of Mg Al LDH and open Mg sites of Mg-MOF-74. Due to the effective incorporation of 8-HQ and better insulation of a thicker lubricant layer, the LDH/MOF composite-layered SLIPS exhibited the best corrosion resistance with a corrosion current density of 5.13 × 10 −10 A·cm −2 . Furthermore, its self-healing performance was assessed by scanning vibration electrode technique and subsequent electrochemical measurements. Results indicated that the artificial scratch on the composite coating was fully repaired after 24 h of immersion in 3.5 wt% NaCl, with its impedance modulus (1.75 × 10 8 Ω·cm 2 ) restored to the same order of magnitude as that of the non-scratched specimen. This was primarily attributed to the physical self-healing of lubricants and chemical self-healing via the “gradual release & layer-by-layer deposition” of Mg 2+ and 8-HQ. Thus, the as-fabricated composite SLIPS coating demonstrates significant industrial application potential.
研究领域:
材料科学
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腐蚀工程
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表面化学
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金属有机框架
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自修复材料
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DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2024
·
IF 6.5
Han-Bing Chen,Lan-Yue Cui,Wan-Nian Liu,Shu-Chang Zhang,Yu Wang,Shuo-Qi Li,Cheng-Bao Liu,Rong-Chang Zeng
Biomedical magnesium (Mg) alloys have attracted widespread attention because of their excellent biocompatibility and biodegradability as bone implants. However, the rapid rate of corrosion in the human environment and post-surgical bacterial infections have limited their clinical applications. It is a good way to prepare drug-loaded composite coatings on the surface of Mg alloys via esterification reaction, but the effects of molecules chain length on coating formation, degradation, drug loading and release behaviors are not really clear. Herein, mannitol (MAN) and polyvinyl alcohol (PVA) loaded with levofloxacin (Lvf) were selected to prepare corrosion-resistant and anti-bacterial coatings on micro-arc oxidation (MAO) coated AZ31 alloys. The results suggested that the composite coatings exhibited optimized corrosion resistance, superior antibacterial activity and outstanding biocompatibility. The drug released from both composite coatings was exceeded the minimum inhibitory concentration (MIC) of Lvf (0.5 μg/mL). Compared to MAN, PVA with longer molecular chains had better drug loading capacity and release rate, which ascribed to the mainly hydrogen-bond interaction between PVA and Lvf, except for esterification reaction. The porosity, pore diameter and roughness of MAO coating were decreased with the addition of MAN or PVA, promoting the adhesion and growth of the osteoblasts. The results provided a new insight into drug-controlled release coatings on Mg alloys as bone implants against bacterial infections.
研究领域:
生物医学工程
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材料科学
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DOI
高影响因子
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
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2023
·Vol. 74
·期 5
·754-765
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IF 1.8
Xing Han,Yongqin Wang,Jia Hu,Tianbing Xiao,Jianjun Li
We reported the realization of superhydrophobic layered double hydroxide (LDH) coating with the double-anticorrosion mechanism on magnesium alloys. This coating was prepared via in-situ growth of LDHs on the etched AZ31 alloy and the modification was caused by 1H, 1H, 2H, 2H-perfluorooctyltrimethoxysilane. The water contact angle on the coating was as large as 161°, possessing the two-scale rough structure consisting of microislands and LDH crystal nanosheets. The excellent corrosion resistance properties of the superhydrophobic LDH coating can be attributed to the double-anticorrosion mechanism associated with LDH coating and superhydrophobic structure. In addition to the active protection of LDH coating, the passive protection of superhydrophobic coating can suppress the occurrence of ion-exchange reactions, leading to excellent corrosion resistance stability.
研究领域:
材料科学
·
腐蚀与防护
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Kui Xue,Yan-Jin Li,Tian-Hao Ma,Lan-Yue Cui,Cheng-bao Liu,Yu-hong Zou,Shuo-Qi Li,Fen Zhang,Rong-Chang Zeng
Rapid corrosion and bacterial infection are obstacles to put into use biodegradable magnesium (Mg) alloy as biomedical materials . In this research, an amorphous calcium carbonate (ACC)@curcumin (Cur) loaded poly-methyltrimethoxysilane (PMTMS) coating prepared by self-assembly method on micro-arc oxidation (MAO) coated Mg alloy has been proposed. Scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy are adopted to analyze the morphology and composition of the obtained coatings. The corrosion behaviour of the coatings is estimated by hydrogen evolution and electrochemical tests. The spread plate method without or with 808 nm near-infrared irradiation is applied to evaluate the antimicrobial and photothermal antimicrobial ability of the coatings. Cytotoxicity of the samples is tested by 3-(4,5)-dimethylthiahiazo(-z-y1)-2,5-di- phenytetrazoliumromide (MTT) and live/dead assay culturing with MC3T3-E1 cells. Results show that the MAO/ACC@Cur-PMTMS coating exhibited favourable corrosion resistance , dual antibacterial ability, and good biocompatibility. Cur was employed as an antibacterial agent and photosensitizer for photothermal therapy. The core of ACC significantly improved the loading of Cur and the deposition of hydroxyapatite corrosion products during degradation, which greatly promoted the long-term corrosion resistance and antibacterial activity of Mg alloys as biomedical materials.
研究领域:
生物医学材料
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腐蚀科学
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抗菌研究
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
·
IF 9.965
Lei Cai,Xiang Song,Cheng-Bao Liu,Lan-Yue Cui,Shuo-Qi Li,Fen Zhang,M. Bobby Kannan,Dong-Chu Chen,Rong-Chang Zeng
This work reports the design and preparation of novel organic (polyvinyl alcohol, PVA)-inorganic (neodymium nitrate, Nd(NO 3 ) 3 ) hybrid coatings on micro-arc oxidation (MAO) coating for magnesium (Mg) alloy corrosion protection . X-ray diffractometer , X-ray photoelectron spectroscopy, fourier transform infrared spectroscopy , field emission scanning electron microscope , Energy Dispersive X-ray spectrometer and surface roughness were applied to characterize the chemical composition and surface morphology of the coatings. The corrosion resistance of the coatings was evaluated by electrochemical and salt spray tests. The results suggested that the formation of PVA-Nd 3+ and PVA-Mg 2+ complexes promoted the enrichment of Nd 3+ on the surface, and thereby improved the sealing quality and compactness of the coating. Interestingly, when the coating was damaged, the Nd 3+ ions were transformed to their carbonates and covered the active sites, and thus exhibiting self-healing function. Further, the corrosion resistance of PVA-Nd 3+ modified MAO composite coating on AZ31 Mg alloy was improved.
研究领域:
材料科学
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腐蚀与防护
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产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Ruonan Ji,Minyu Ma,Yuntao He,Chenxu Liu,Tao Fang,Zhan Zhang,Yi Wang,Yedong He,Junsheng Wu
In this study, we explored the phase compositions and morphologies of the ceramic coatings from different aluminum sources (aluminum isopropoxide, aluminum nitrate, or a mixture of the two) prepared using cathode plasma electrolytic deposition (CPED) onto AZ31 magnesium alloys . Scanning electron microscopy and X-ray diffraction analyses of these coatings indicate that the deposited ceramic made from aluminum isopropoxide was composed of γ-Al 2 O 3 whereas the one made from aluminum nitrate was composed of MgA1 2 O 4 , and that the former was more compact and uniform than the latter. A composite coating was prepared using epoxy resin as a protective layer that sealed the micropores on the CPED coating, thereby further improving its anticorrosion property. The elemental distribution of the cross-section of the composite coating was examined via energy dispersive spectroscopy. Corrosion resistance was investigated using potentiodynamic polarization curves and electrochemical impedance spectroscopy in a 3.5 wt% NaCl medium, and a salt spray test. The results indicate that the corrosion protection property of the Al 2 O 3 /epoxy resin coating of the magnesium alloy was better than that of the single Al 2 O 3 coating. A cross-cut test revealed that the adhesion of the Al 2 O 3 /epoxy resin composite coating to the magnesium alloy surface was better than that of the single epoxy resin coating. The approach presented herein provides an attractive way to modify the surface of magnesium alloys to improve anticorrosion.
研究领域:
材料科学
·
腐蚀与防护
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产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2022
·
IF 4.865
Rui Fang,Runjia Liu,Zhi-Hui Xie,Liang Wu,Yuejun Ouyang,Mingqi Li
To improve the corrosion protection of a nickel-based coating to the underlying magnesium alloy , a superhydrophobic nickel‑phosphorus/nickel/fluorinated polysiloxane (PFDTMS) triple-layer composite coating was successfully designed and fabricated on AZ31 magnesium alloy . The composite coating consists of an electroless-deposited nickel‑phosphorus (ELNi) bottom layer, an electrochemically deposited nickel (ECNi) nano-cone array middle layer, and a PFDTMS top layer via a dehydration-condensation reaction of silane . The surface morphology , structure, and chemical composition of the coating are identified by scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The static water contact angle (WCA) of the composite coating is 153.0 ° ± 4.6 ° , attributed to the synergistic effect between nano-cone-shaped nickel and PFDTMS layer. Compared to the untreated magnesium alloy, the corrosion current density of the coating decreases by four orders of magnitude based on the Tafel curve, and the corresponding impedance modulus at low frequency (| Z | ƒ=0.01 Hz ) increases by almost four orders of magnitude based on the electrochemical impedance spectra (EIS), demonstrating the superior corrosion protection to magnesium alloy. Lastly, the wetting states of the water droplets on the nickel‑phosphorus layer with and without electrodeposition of nickel nano-cone array and silane modification are also discussed in detail.
研究领域:
材料科学
·
腐蚀工程
·
表面工程
·
电化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）