Silane coupling agent (SCA) pretreatment and polycaprolactone (PCL) coating for enhanced corrosion resistance for magnesium

Niu, Jialin; Liu, Huiyin; Xin, Ping; Xun, Xianchao; Li, Guangyu

doi:10.1007/s11998-018-0107-y

Cited by 9 publications

(5 citation statements)

References 40 publications

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“…), and R stands for the carbon chain, which can be an aromatic hydrocarbon or an alkyl chain [ 165 ]. Silane-based coatings have been proved to be efficacious, eco-friendly, and economical and have been applied extensively in safeguarding Mg alloys against corrosion in the industrial field [ [166] , [167] , [168] ]. The reaction mechanism of silane coating is described in reactions (9-11): R-Si-OR + H 2 O → R-Si-OH + ROH R-Si-OH + M − OH → M- O -Si-R + H 2 O 2R-Si-OH → R-Si- O -Si-R + H 2 O …”

Section: Surface Modification Of Mg Alloy Stentsmentioning

confidence: 99%

“…The released GA molecules selectively promoted the proliferation of ECs, and inhibit SMCs growth [ 238 ]. AZ60 APTES/PCL – SBF −1.41 −0.365 70.5 0.293 1.610 0.0069 7 The corrosion rates of Mg alloys were extremely improved due to the preparation of the APTES/PCL coating [ 168 ]. Mg−Zn−Ca APTES/SF 7 SBF −1.56 −0.80 – – – – 7 APTES/SF coatings were an effective protective coating for Mg substrates and delayed the degradation period of Mg alloys.…”

Section: Surface Modification Of Mg Alloy Stentsmentioning

confidence: 99%

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Advances in coatings on magnesium alloys for cardiovascular stents – A review

Zhang

Yang

et al. 2021

Bioactive Materials

109

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Magnesium (Mg) and its alloys, as potential biodegradable materials, have drawn wide attention in the cardiovascular stent field because of their appropriate mechanical properties and biocompatibility. Nevertheless, the occurrence of thrombosis, inflammation, and restenosis of implanted Mg alloy stents caused by their poor corrosion resistance and insufficient endothelialization restrains their anticipated clinical applications. Numerous surface treatment tactics have mainly striven to modify the Mg alloy for inhibiting its degradation rate and enduing it with biological functionality. This review focuses on highlighting and summarizing the latest research progress in functionalized coatings on Mg alloys for cardiovascular stents over the last decade, regarding preparation strategies for metal oxide, metal hydroxide, inorganic nonmetallic, polymer, and their composite coatings; and the performance of these strategies in regulating degradation behavior and biofunction. Potential research direction is also concisely discussed to help guide biological functionalized strategies and inspire further innovations. It is hoped that this review can give assistance to the surface modification of cardiovascular Mg-based stents and promote future advancements in this emerging research field.

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Section: Surface Modification Of Mg Alloy Stentsmentioning

confidence: 99%

Section: Surface Modification Of Mg Alloy Stentsmentioning

confidence: 99%

Advances in coatings on magnesium alloys for cardiovascular stents – A review

Zhang

Yang

et al. 2021

Bioactive Materials

109

View full text Add to dashboard Cite

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“…The PDP curves of the samples obtained in 3.5 Wt.% NaCl are shown in Figure 5. The corrosion potential E corr and corrosion current density I corr determined by Tafel slope extrapolation are presented in Table 2, and it is generally considered to represent the cathodic hydrogen evolution by water reduction, and the anodic one represents dissolution of alloy or corrosion behaviors of the protective layer (Niu et al, 2018). In Figure 5(a), it can be found that the samples produced by electrolyte with 10% concentration of ethylene glycol have the best corrosion resistance compared with 0 and 20%.…”

Section: Electrochemical Corrosion Behaviormentioning

confidence: 99%

Preparation and properties of the anodized film on Fe-Cr-Al alloy surface

Yang

Guo

Zai

et al. 2020

ACMM

Self Cite

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Purpose This paper aims to find a way to improve the surface insulation, corrosion resistance and mechanical properties of Fe-Cr-Al electrothermal alloy, exploring the best oxidation condition and analyzing the oxidation mechanism. Design/methodology/approach Electrochemical workstation was used for anodic oxidation, and the effect of current density, ethylene glycol concentration and oxidation time on properties of the film were investigated by resistivity test, scanning electron microscope, electrochemical tests (potentiodynamic polarization and electrochemical impedance spectroscopy) and mechanical tests, and the oxidation process was analyzed by X-ray photoelectron spectroscopy (XPS). Findings According to the potential-time curves of anodic oxidation and the analysis of XPS, the whole oxidation process can be divided into four stages. When the current density is 0.8 A/dm2, the ethylene glycol concentration is 10%, and the oxidation time is 60 min, the film has the best corrosion protection, mechanical properties and surface morphology. The resistivity of the samples is about 13 orders magnitude than that of the matrix. Originality/value In this paper, a protective electrically insulating film was prepared by anodic oxidation in an alkaline electrolyte solution. The oxidation conditions were optimized and the oxidation mechanism was analyzed.

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“…Metallic materials are better than ceramics or polymeric materials 1,2 for use in biomedical implants due to load‐bearing ability. Magnesium and its alloys are of interest in the design of biomedical implants due to their biodegradation properties that allow them to dissolve after the purpose of the implant has been fulfilled 3–5 .…”

Section: Introductionmentioning

confidence: 99%

Comparing three strategies for surface treatment of Mg coated by hexamethylene diamine tetra methylene phosphonic acid for corrosion protection

Soliman,

Abdel Mouez,

Hussien

et al. 2023

Surface & Interface Analysis

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Manufacturing Mg and Mg‐based alloys with controllable degradation rate has always been a challenge. Surface modification is one of the best ways to acquire protection against corrosion. Previously, many approaches such as phosphating (Na3PO4), fluoridation (HF), and alkalization (NaOH) treatments have been used to regulate the corrosion rate. Here, we compare the corrosion rates of 3‐surface modified Mg samples coated with hexamethylene diamine tetra methylene phosphonic (HMDTMPA). The protection of those different layers was ranked in the order: phosphate > alkaline > fluoridation treatment. The chemistry of those chemical conversion layers was discussed in the light of scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), and X‐ray photoelectron spectroscopy (XPS). The mechanism of tailoring a protective film of HMDTMPA on phosphated Mg was discussed according to the ability of P to bridge the substrate with the coating.

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Silane coupling agent (SCA) pretreatment and polycaprolactone (PCL) coating for enhanced corrosion resistance for magnesium

Cited by 9 publications

References 40 publications

Advances in coatings on magnesium alloys for cardiovascular stents – A review

Advances in coatings on magnesium alloys for cardiovascular stents – A review

Preparation and properties of the anodized film on Fe-Cr-Al alloy surface

Comparing three strategies for surface treatment of Mg coated by hexamethylene diamine tetra methylene phosphonic acid for corrosion protection

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