Enhanced adhesion and anticorrosion of silk fibroin coated biodegradable Mg-Zn-Ca alloy via a two-step plasma activation

Fang, Hui; Wang, Chenxi; Zhou, Shicheng; Zheng, Zhen; Tian, Lu; Li, Ge; Tian, Yanhong; Suga, Tadatomo

doi:10.1016/j.corsci.2020.108466

Cited by 39 publications

(13 citation statements)

References 70 publications

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“…The R p value can reflect the corrosion rate of the alloy, and the larger the value, the better the corrosion resistance of the alloy (Zhang et al , 2011a, 2011b; Fang et al , 2020; Liu et al , 2018). According to the fitting results, the R p values of Mg-1.5Zn-0.2Ca, Mg-1.5Zn-0.2Ce and Mg-1.5Zn-0.2Ca-0.2Ce were 1416.7, 836.7 and 1039.1 Ω cm 2 , respectively.…”

Section: Resultsmentioning

confidence: 99%

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Investigation on microstructure and corrosion behavior of rolled Mg-1.5Zn-xCa-xCe alloy

Zhang

Cheng

Huang

et al. 2022

ACMM

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Purpose This study aims to investigate the effect of microalloyed Ca and Ce on microstructure and corrosion behavior of Mg-1.5Zn alloy. Mg-1.5Zn-xCa-xCe alloys were prepared by melting, extrusion and rolling processes. Design/methodology/approach The effects of adding Ca and Ce elements alone or adding Ca and Ce elements simultaneously on the microstructure and corrosion resistance of Mg-1.5Zn-xCa-xCe (x = 0 or 0.2 Wt.%) alloys were studied by scanning electron microscopy, hydrogen evolution tests and electrochemical experiments. Findings The addition of Ca and Ce elements alone or the addition of Ca and Ce elements had little impact on the grain size of the rolled and annealed Mg-1.5Zn-xCa-xCe alloy, but had a greater effect on the type and quantity of the second phase. Originality/value The order of the corrosion rates for the three alloys was Mg-1.5Zn-0.2Ca < Mg-1.5Zn-0.2Ca-0.2Ce < Mg-1.5Zn-0.2Ce. Mg-1.5Zn-0.2Ca showed the best corrosion resistance, which was related to the second phase and corrosion products.

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Section: Resultsmentioning

confidence: 99%

“…The R p value can reflect the corrosion rate of the alloy, and the larger the value, the better the corrosion resistance of the alloy (Zhang et al, 2011a(Zhang et al, , 2011bFang et al, 2020;Liu et al, 2018).…”

Section: Electrochemical Experimentsmentioning

confidence: 99%

Investigation on microstructure and corrosion behavior of rolled Mg-1.5Zn-xCa-xCe alloy

Zhang

Cheng

Huang

et al. 2022

ACMM

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“…The crystalline HA coating with robust binding force could reduce the corrosion and degradation rate of ZK60, and also improve the surface mechanical properties of ZK60, further extending its stability as an implant material [28,29]. The additional XRD peaks observed at 2θ values 27.9, 23.8 and 20.7 degree for SF + HA coated ZK60 sample corresponds to the silk I, silk II and random coil structural conformations of SF protein, respectively [30]. The observed stable structure of mixed phases of SF + HA coating could potentially tune the surface properties of ZK60 and increase its corrosion and degradation resistance properties.…”

Section: Surface Morphology Composition Phase and Structure Of Coatingsmentioning

confidence: 96%

In Vitro Corrosion Resistance of a Layer-by-Layer Engineered Hybrid Coating on ZK60 Magnesium Alloy

et al. 2022

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Magnesium alloys are next generation biodegradable implants for clinical applications. However, their medical applications are currently hampered by their rapid corrosion rate in the physiological environment. To overcome such limitations, we have applied a novel layer-by-layer engineering approach of introducing anodization-induced microrough oxidized surface on ZK60 magnesium alloy, followed by surface mineralization with natural calcium apatite (hydroxyapatite, HA), and surface coating with natural protein (silk fibroin, SF); which, effectively reduces corrosion and degradation rate of ZK60 in simulated body fluid. Anodization of ZK60 improved the surface adhesion strength of HA layer; HA layer increased the surface roughness, hydrophilicity and micro-hardness, whereas decreased ionic release; SF layer decreased surface microroughness and hydrophilicity, whereas improved the stability of HA layer. The SF + HA coating on anodized ZK60 effectively decreased the in vitro weight loss (degradation) by almost six times, whereas corrosion rate by more than two orders in magnitude. Such interfacial coatings, with biocompatible SF on the outer surface, could potentially expand the application of ZK60 in the field of biomedical engineering.

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“…It is used in drug delivery and tissue engineering applications 6 . Silk fibroin-based coating was applied on magnesium alloys to improve corrosion resistance 51,52 . Instead, 55 .…”

Section: Polymer-based Degradable Materialsmentioning

confidence: 99%

Surface engineering of biodegradable implants: emerging trends in bioactive ceramic coatings and mechanical treatments

2021

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Enhanced adhesion and anticorrosion of silk fibroin coated biodegradable Mg-Zn-Ca alloy via a two-step plasma activation

Cited by 39 publications

References 70 publications

Investigation on microstructure and corrosion behavior of rolled Mg-1.5Zn-xCa-xCe alloy

Investigation on microstructure and corrosion behavior of rolled Mg-1.5Zn-xCa-xCe alloy

In Vitro Corrosion Resistance of a Layer-by-Layer Engineered Hybrid Coating on ZK60 Magnesium Alloy

Surface engineering of biodegradable implants: emerging trends in bioactive ceramic coatings and mechanical treatments

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