Effect of fluoride coatings on the corrosion behavior of Mg–Zn–Er alloys

Panemangalore, Devadas Bhat; Shabadi, Rajashekhara; Gupta, Manoj; Ji, Gang

doi:10.1016/j.surfin.2018.11.007

Cited by 27 publications

(9 citation statements)

References 47 publications

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“…Their properties vary according to their chemical compositions, sizes, and specific surface areas. These materials of the future have the potential to save energy while protecting the environment; however, achieving these objectives requires excellent mastery of nanomaterial production processes, which must be low cost from an energy point of view [1,2]. Molybdates, which also have interesting physical properties [3], are widely used in various industrial sectors.…”

Section: Introductionmentioning

confidence: 99%

Structural, morphological and optical properties of cobalt-substituted MgMoO4 ceramics prepared by pyrolysis of citric acid precursors

Lakhlifi

Jabbar

Ouatib

et al. 2020

Surfaces and Interfaces

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Magnesium-cobalt molybdate composites (Mg 1-x Co x MoO 4 : x = 0, 0.3, 0.4, 0.6, 0.8 and 1) were successfully synthesized through a facile sol-gel synthesis at low temperature, and characterized by thermogravimetric and differential thermal analysis (TG-DTA), X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FTIR), Raman spectroscopy, scanning electron microscopy (SEM), UV-Vis spectroscopy and colorimetric measurements using the CIE L*a*b* colour system. The surface specific area was calculated using the Brunauer-Emmett-Teller analysis in the adsorption/desorption isotherm. The examination of the X-ray diffractograms of the unground milled solid solutions of Mg 1-x Co x MoO 4 (0 ≤ x ≤ 1) presented a single continuous system related to monoclinic β-MgMoO 4 . The absorbance spectra of the Mg 1-x Co x MoO 4 pigments confirmed the insertion of cobalt in the β-MgMoO 4 matrix. The CIE-L*a*b* colour coordinates indicated that the intense purple colour was obtained for x = 0.6.

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Section: Introductionmentioning

confidence: 99%

Structural, morphological and optical properties of cobalt-substituted MgMoO4 ceramics prepared by pyrolysis of citric acid precursors

Lakhlifi

Jabbar

Ouatib

et al. 2020

Surfaces and Interfaces

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“…If the new phase covered on the surface of Mg or its alloys is prepared by chemical or electrochemical treatment, it can be defined as chemical conversion coating [ 87 ]. Alkaline, acid, and fluoride treatments are widely used methods for surface modification to enhance the corrosion resistance of Mg-based alloys [ [88] , [89] , [90] ]. Hydrothermal method for preparation of hydroxide layers is also a promising strategy to improve the corrosion performance of Mg-based alloys [ 91 ].…”

Section: Current Strategies To Address Challenges Of Mg or Its Alloysmentioning

confidence: 99%

Clinical translation and challenges of biodegradable magnesium-based interference screws in ACL reconstruction

Luo

Zhang

Wang³

et al. 2021

Bioactive Materials

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As one of the most promising fixators developed for anterior cruciate ligament (ACL) reconstruction, biodegradable magnesium (Mg)-based interference screws have gained increasing attention attributed to their appropriate modulus and favorable biological properties during degradation after surgical insertion. However, its fast degradation and insufficient mechanical strength have also been recognized as one of the major causes to limit their further application clinically. This review focused on the following four parts. Firstly, the advantages of Mg or its alloys over their counterparts as orthopaedic implants in the fixation of tendon grafts in ACL reconstruction were discussed. Subsequently, the underlying mechanisms behind the contributions of Mg ions to the tendon-bone healing were introduced. Thirdly, the technical challenges of Mg-based interference screws towards clinical trials were discussed, which was followed by the introduction of currently used modification methods for gaining improved corrosion resistance and mechanical properties. Finally, novel strategies including development of Mg/Titanium (Ti) hybrid fixators and Mg-based screws with innovative structure for achieving clinically customized therapies were proposed. Collectively, the advancements in the basic and translational research on the Mg-based interference screws may lay the foundation for exploring a new era in the treatment of the tendon-bone insertion (TBI) and related disorders.

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“…Unfortunately, the rapid degradation of magnesium alloy and the resulted fast strength decay in the physiological environment can cause the alloy to loss its mechanical integrity prior to optimal vascular remodeling [ 5 , 6 ], which limits its clinical application. Many efforts have been devoted to increase the corrosion resistance of magnesium alloys via surface coating, including metal oxide coatings [ 7 ], fluoride coatings [ 8 , 9 ], calcium phosphate coatings [ 10 , 11 ] and polymeric coatings [ 12 , 13 ]. Amongst these options, polymeric coatings are superior to other materials to serve as the stent coatings because of their additional advantages as a drug reservoir and can be further functionalized with biomolecules.…”

Section: Introductionmentioning

confidence: 99%

A surface-eroding poly(1,3-trimethylene carbonate) coating for magnesium based cardiovascular stents with stable drug release and improved corrosion resistance

Tang

Zhao

et al. 2022

Bioactive Materials

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Magnesium alloys with integration of degradability and good mechanical performance are desired for vascular stent application. Drug-eluting coatings may optimize the corrosion profiles of magnesium substrate and reduce the incidence of restenosis simultaneously. In this paper, poly (trimethylene carbonate) (PTMC) with different molecular weight (50,000 g/mol named as PTMC5 and 350,000 g/mol named as PTMC35) was applied as drug-eluting coatings on magnesium alloys. A conventional antiproliferative drug, paclitaxel (PTX), was incorporated in the PTMC coating. The adhesive strength, corrosion behavior, drug release and biocompatibility were investigated. Compared with the PLGA control group, PTMC coating was uniform and gradually degraded from surface to inside, which could provide long-term protection for the magnesium substrate. PTMC35 coated samples exhibited much slower corrosion rate 0.05 μA/cm 2 in comparison with 0.11 μA/cm 2 and 0.13 μA/cm 2 for PLGA and PTMC5 coated counterparts. In addition, PTMC35 coating showed more stable and sustained drug release ability and effectively inhibited the proliferation of human umbilical vein vascular smooth muscle cells. Hemocompatibility test indicated that few platelets were adhered on PTMC5 and PTMC35 coatings. PTMC35 coating, exhibiting surface erosion behavior, stable drug release and good biocompatibility, could be a good candidate as a drug-eluting coating for magnesium-based stent.

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Effect of fluoride coatings on the corrosion behavior of Mg–Zn–Er alloys

Cited by 27 publications

References 47 publications

Structural, morphological and optical properties of cobalt-substituted MgMoO4 ceramics prepared by pyrolysis of citric acid precursors

Structural, morphological and optical properties of cobalt-substituted MgMoO4 ceramics prepared by pyrolysis of citric acid precursors

Clinical translation and challenges of biodegradable magnesium-based interference screws in ACL reconstruction

A surface-eroding poly(1,3-trimethylene carbonate) coating for magnesium based cardiovascular stents with stable drug release and improved corrosion resistance

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