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ISSN: 2213-9567

Degradation and biocompatibility of one-step electrodeposited magnesium thioctic acid/magnesium hydroxide hybrid coatings on ZE21B alloys for cardiovascular stents

•A novel MTA/Mg(OH)2 hybrid coating is simply prepared by one-step electrodeposition.•MTA/Mg(OH)2 coatings with dense structures are firmly bonded to the ZE21B alloy.•Corrosion resistance of ZE21B alloys...

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Anisotropic cyclic deformation behavior of an extruded Mg-3Y alloy sheet with rare earth texture

Mg-RE (magnesium-rare earth) alloys exhibit pronounced in-plane anisotropy of mechanical response under quasi-static monotonic loading resulting from the RE texture, as extensively reported. In this...

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Reducing damage extent of epoxy coating on magnesium substrate by Zr-enhanced PEO coating as an effective pretreatment

This research was undertaken to study the effect of Zr-enhanced plasma electrolytic oxidation (PEO) as a pretreatment on the corrosion performance of epoxy coating applied on Magnesium in 3.5 wt% NaCl...

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Minimizing pest aluminum in magnesium for the production of high-purity titanium

It is practically difficult to find titanium sponges with low and stable aluminum impurities on the market even though it is the precondition to prepare high-purity titanium. Analysis indicates that...

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Improvement effect of reversible solid solutions Mg2Ni(Cu)/ Mg2Ni(Cu)H4 on hydrogen storage performance of MgH2

•Core-shell NiCu@C nanoparticles (∼15 nm) were prepared successfully.•MgH2–11 wt.% NiCu@C has excellent hydrogen absorption/desorption performances.•The apparent activation energy (Ea) of dehydrogenated...

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Brittle and ductile characteristics of intermetallic compounds in magnesium alloys: A large-scale screening guided by machine learning

In the present work, we have employed machine learning (ML) techniques to evaluate ductile-brittle (DB) behaviors in intermetallic compounds (IMCs) which can form magnesium (Mg) alloys. This procedure...

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The deteriorated degradation resistance of Mg alloy microtubes for vascular stent under the coupling effect of radial compressive stress and dynamic medium

•Radial compressive stress was introduced in the degradation test of mg microtubes.•Dynamic medium and radial compressive stress accelerate mg microtubes degradation.•The degradation mechanism of mg...

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Difference in extrusion temperature dependences of microstructure and mechanical properties between extruded AZ61 and AZ91 alloys

The effects of extrusion temperature on the microstructure and tensile properties of extruded AZ61 and AZ91 alloys are investigated by subjecting them to hot extrusion at 300 and 400 °C. Although the...

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Stress-corrosion coupled damage localization induced by secondary phases in bio-degradable Mg alloys: phase-field modeling

•A thermodynamically consistent phase-field model is developed for the stress-corrosion coupled damage localization.•A micro-galvanic corrosion domain is defined by imposing the Dirichlet boundary conditions...

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Bioresorbable magnesium-based alloys containing strontium doped nanohydroxyapatite promotes bone healing in critical sized bone defect in rat femur shaft

Magnesium-based biomaterials have been in extensive research for orthopedic applications for decades due to their optimal mechanical features and osteopromotive nature; nevertheless, rapid degradation...

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Effects of heat treatment on the corrosion behavior and mechanical properties of biodegradable Mg alloys

Biodegradable magnesium (Mg) alloys exhibit great potential for use as temporary structures in tissue engineering applications. Such degradable implants require no secondary surgery for their removal....

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Fabrication of chitosan/silica hybrid coating on AZ31 Mg alloy for orthopaedic applications

Biocompatible conversion of chitosan and chitosan/silica hybrid coating were prepared to enhance the biocompatibility and corrosion resistance of biodegradable AZ31 Mg alloy. The coatings were optimized...

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A self-healing and bioactive coating based on duplex plasma electrolytic oxidation/ polydopamine on AZ91 alloy for bone implants

Magnesium (Mg) alloys are well-known in biomedical materials owing to their elastic module near to bone, biocompatibility and biodegradation properties. Nevertheless, poor corrosion resistance hinders...

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A new nano-scale surface marking technique for the deformation analysis of Mg-based alloys

In this work a new nanoscale surface marking technique, namely electron beam damage induced surface marking (EBDISM), is developed and tested for the first time on a fine-grained pure Mg surface. This...

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A review of novel ternary nano-layered MAX phases reinforced AZ91D magnesium composite

In recent decades, the demand for lightweight and high specific strength materials brings about the development of magnesium matrix composites. Different from some traditional binary ceramic particles,...

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One-step hydrothermal synthesis of 2,5-PDCA-containing MgAl-LDHs three-layer composite coating with high corrosion resistance on AZ31

The addition of 2,5-pyridinedicarboxylic acid (2,5-PDCA) to the Mg-Al LDH coating, which was prepared by one-step hydrothermal synthesis, had extremely enhanced the corrosion protection of AZ31 Mg alloy,...

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Exceptional thermal stability and enhanced hardness in a nanostructured Mg-Gd-Y-Zn-Zr alloy processed by high pressure torsion

•HPT-processed Mg-Gd-Y-Zn-Zr nanostructure exhibits an excellent thermal stability.•Mg-Gd-Y-Zn-Zr nanostructure exhibits an unique phase transformation upon annealing.•The formation of solute segregation...

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Smart composite antibacterial coatings with active corrosion protection of magnesium alloys

•Multifunctional PEO-coatings with active corrosion protection is formed on Mg alloy.•PEO-coating is modified with corrosion inhibitor – 8-hydroxyquinoline (8-HQ).•The polymer treatment of the PEO-layer...

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Inherited multimodal microstructure evolution of high-fracture-toughness Mg-Zn-Y-Al alloys during extrusion for the consolidation of rapidly solidified ribbons

•Mg-Zn-Y-Al alloys were developed by the consolidation of rapidly solidified (RS) ribbons.•A multimodal microstructure was developed during extrusion for RS ribbon consolidation.•The formation of micrometer-sized...

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Advanced prediction of organic–metal interactions through DFT study and electrochemical displacement approach

•8-AN, 8-MQ, and 8-QSA chimisorbed on Mg(0001) surface via covalent bonds formation.•Upon the formation of coordination complexes between 8-AN and Mg2+, energy gap underwent change about ∆E = 5.7 eV.•8-AN,...

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Greatly enhanced corrosion/wear resistances of epoxy coating for Mg alloy through a synergistic effect between functionalized graphene and insulated blocking layer

The poor corrosion and wear resistances of Mg alloys seriously limit their potential applications in various industries. The conventional epoxy coating easily forms many intrinsic defects during the...

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A novel Mg-Gd-Y-Zn-Cu-Ni alloy with excellent combination of strength and dissolution via peak-aging treatment

Inferior absolute strength and dissolution properties are the main bottlenecks for the widespread application of dissolvable magnesium alloys in complex working environments for unconventional oil and...

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Degradable magnesium alloy suture promotes fibrocartilaginous interface regeneration in a rat rotator cuff transosseous repair model

Despite transosseous rotator cuff tear repair using sutures is widely accepted for tendon-bone fixation, the fibrocartilaginous enthesis regeneration is still hardly achieved with the traditional sutures....

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Dislocation characteristics and dynamic recrystallization in hot deformed AM30 and AZ31 alloys

Zn addition to Mg alloys activates non-basal slip or twinning with solute softening effects. On the other hand, the effects of the Zn solute on the macroscopic dislocation behavior and dynamic recrystallization...

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Synergistic enhancement on mechanical properties and corrosion resistance of biodegradable Mg-Zn-Y alloy via V-microalloying

For the sake of improving the mechanical properties and corrosion resistance of biodegradable Mg alloy synergistically, various content of element V (0, 0.05, 0.10, 0.15, 0.20 wt.%) are introduced into...

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