The effect of in vitro corrosion on the mechanical properties of metallic high strength biodegradable surgical threads

Milenin, A.; Kustra, Piotr; Byrska-Wójcik, Dorota; Wróbel, Mirosław; Paćko, M.; Sulej-Chojnacka, Joanna; Matuszyńska, Sława; Płonka, B.

doi:10.1007/s43452-020-00062-w

Cited by 19 publications

(8 citation statements)

References 56 publications

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“…In Figure 12a,c,e-corresponding to MgCa 4.5 alloys, contrary to MgCa 4.5 Gd 0.5 alloys-the metallic gloss and fragmentation of the structure can be observed. The presented morphology images are consistent the results presented in the literature [41] concerning corrosion tests for MgCa 0 . 7 and MgCa 0 .…”

Section: Xps Analysissupporting

confidence: 91%

Surface Modification of Biomedical MgCa4.5 and MgCa4.5Gd0.5 Alloys by Micro-Arc Oxidation

et al. 2021

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The aim of this work was to characterize the structure and corrosion properties of the MgCa4.5(Gd0.5) alloys surface treated by the micro-arc oxidation (MAO) process. The MgCa4.5 and MgCa4.5Gd0.5 alloy samples were processed by MAO in an electrolyte composed of NaOH (10 g/dm3), NaF (10 g/dm3), NaH2PO4 (5 g/dm3), Na2SiO2·5H2O (10 g/dm3) and water. Two different voltages (120 V and 140 V) were used in the MAO process. The alloys protected by an oxide layer formed in the MAO were then the subject of corrosion resistance tests in an environment simulating the human body (Ringer’s solution). After the experiments, the resulting samples were investigated with using SEM, XPS and EDS techniques. The addition of Gd affected the fragmentation of the coating structure, thereby increasing the specific surface; higher voltages during the MAO process increased the number and size of surface pores. Corrosion tests showed that the MgCa4.5Gd0.5 alloys were characterized by low polarization resistances and high corrosion current densities. The studies indicated the disadvantageous influence of gadolinium on the corrosion resistance of MgCa4.5 alloys. The immersion tests confirmed lower corrosion resistance of MgCa4.5Gd0.5 alloys compared to the referenced MgCa4.5 ones. The MgCa4.5 alloy with the MAO coating established at voltage 140 V demonstrated the best anticorrosion properties.

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Section: Xps Analysissupporting

confidence: 91%

Surface Modification of Biomedical MgCa4.5 and MgCa4.5Gd0.5 Alloys by Micro-Arc Oxidation

et al. 2021

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“…The last group of Mg‐based biomaterials is wound closure devices such as Mg ligature, 73 clips, 74 staples, 75 Velox CDs, 11 and newly surgical tacks 76 . These biomaterials are designed to aid in closing wounds by manipulating wound edges closer together for a certain period, then they are entirely absorbed by the patient's body during a couple of weeks without affecting the characteristics of the connected tissues 4,77,78 .…”

Section: Mg and Its Alloys As Biodegradable Biomaterialsmentioning

confidence: 99%

Biodegradable magnesium‐based biomaterials: An overview of challenges and opportunities

Amukarimi

Mozafari

2021

MedComm

105

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As promising biodegradable materials with nontoxic degradation products, magnesium (Mg) and its alloys have received more and more attention in the biomedical field very recently. Having excellent biocompatibility and unique mechanical properties, magnesium‐based alloys currently cover a broad range of applications in the biomedical field. The use of Mg‐based biomedical devices eliminates the need for biomaterial removal surgery after the healing process and reduces adverse effects induced by the implantation of permanent biomaterials. However, the high corrosion rate of Mg‐based implants leads to unexpected degradation, structural failure, hydrogen evolution, alkalization, and cytotoxicity. To overcome these limitations, alloying Mg with suitable alloying elements and surface treatment come highly recommended. In this area, open questions remain on the behavior of Mg‐based biomaterials in the human body and the effects of different factors that have resulted in these challenges. In addition to that, many techniques are yet to be verified to turn these challenges into opportunities. Accordingly, this article aims to review major challenges and opportunities for Mg‐based biomaterials to minimize the challenges for the development of novel biomaterials made of Mg and its alloys.

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“…These studies looked very promising. Indeed, magnesium has the highest recommended daily intake of 375-500 mg in human body [14] but, unfortunately, magnesium alloys have too high corrosion rates and insufficient ductility for this application [15]. Also, when magnesium corrodes, hydrogen is released.…”

Section: Introductionmentioning

confidence: 99%

“…One of the requirements for strong degradable materials is no more than a two-fold decrease in strength per 1 month of corrosion. It was shown in [15] that for Mg-Ca alloys, due to a too high rate of bio-corrosion, this condition is satisfied only for an extruded wire with a diameter of 1.8 mm, which is much larger than the diameter of steel wires usually used for tightening bone tissues. There is also an important, up to 50%, decrease in the strength of the wire made of a magnesium alloy when a surgical knot is tied [8].…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties, crystallographic texture, and in vitro bio-corrosion of low-alloyed Zn–Mg, produced by hot and cold drawing for biodegradable surgical wires

Milenin

Wróbel

Kustra

et al. 2021

Archiv.Civ.Mech.Eng

Self Cite

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The paper is devoted to the study of the mechanical, microstructural, and bio-corrosive behavior of low-alloyed Zn–Mg biodegradable surgical wires for bone reconstructions. Three biodegradable alloys with different magnesium content have been studied, their production technology has been developed and the product properties have been determined. The technology includes casting, extrusion, hot and cold drawing of the wire, and the product surface finishing. The paper shows the most important stages of the process (i.e., extrusion and drawing) in detail. The technological parameters have been selected based on the results of the computer modeling. The flow stress–strain curves of extruded materials have been obtained at various strain rates and temperatures. Two drawing technologies have been compared. The first one is the room temperature conventional wire drawing. In the second one, the first few passes have been made at an elevated temperature and the rest at room temperature. This allowed avoiding the breaking of the wire during the first passes (a typical issue of the conventional technology for these alloys) and increasing the ductility of the final product. Mechanical properties, bio-corrosion, and crystallographic texture of the material were determined at different stages of the processing. A simultaneous increase in the wire strength, the number of repeated bending until the rupture of the wire, and in the bio-corrosion rate due to drawing has been registered. This phenomenon coincided with a change in the crystallographic texture. It has been shown that the product tensile strength of about 250–300 MPa can be reduced by about 30% due to surgical knots tied on it.

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The effect of in vitro corrosion on the mechanical properties of metallic high strength biodegradable surgical threads

Cited by 19 publications

References 56 publications

Surface Modification of Biomedical MgCa4.5 and MgCa4.5Gd0.5 Alloys by Micro-Arc Oxidation

Surface Modification of Biomedical MgCa4.5 and MgCa4.5Gd0.5 Alloys by Micro-Arc Oxidation

Biodegradable magnesium‐based biomaterials: An overview of challenges and opportunities

Mechanical properties, crystallographic texture, and in vitro bio-corrosion of low-alloyed Zn–Mg, produced by hot and cold drawing for biodegradable surgical wires

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