Bio-Functionalization of a Novel Biocompatible High Entropy Alloy Used For Bone Implants

Mm, Codescu; Vlădescu, Alina; Geanta,; Voiculescu, Ionelia; Pană, Iulian; Dinu, Mihaela; Ae, Kiss; Braic,; Pătroi, Dan Nicolae; Ve, Marinescu; Mihai, Iuliana Oana

doi:10.20944/preprints202104.0259.v1

Cited by 4 publications

(2 citation statements)

References 56 publications

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“…This was the case regardless of the kind of coating used. The ICorr value declined even more when reinforcement in the form of ZnO was added to the HAp, and the sample coated with (HAp+12 % ZnO) had the smallest Icorr value [129,130].…”

Section: Doping Results On Electrochemical and Mechanical Propertiesmentioning

confidence: 99%

Consequences of hydroxyapatite doping using plasma spray to implant biomaterials

Mehta

Singh

2023

J. Electrochem. Sci. Eng.

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Hydroxyapatite (HAp) is still one of the most common bioactive coatings used on metal implants in orthopaedics due to its biocompatibility. The application of HAp to metallic implants can be accomplished using a variety of processes. Plasma spray (PS) coating stands out as the method of choice due to its dependability, affordability, and ability to protect metal surfaces against rust and wear. The use of HAp in medicine has been limited due to the material's unfavorable mechanical characteristics, such as brittleness, a lack of fracture toughness, and inadequate tensile strength. In addition, the remodeling durations of HAp-covered implants are significantly longer, the rate of osseointegration is significantly lower, and no antimicrobial actions or features are present in these implants. The mechanical and biological properties of HAp have been improved by applying various approaches, all of which fall under the category of surface modification tactics. Dopants are one of those strategies that are extremely successful at changing the characteristics and using them in HAp is one of those methods. As a result, this review study aims to consolidate data on implant Hap coating using the plasma spray approach and assess the benefits and problems associated with employing this method. In addition, the paper addresses how altering the structural, chemical, and mechanical features of HAp can assist in overcoming these limitations. In conclusion, it explains how the incorporation of entering the HAp structure can change the features that, when coated using the plasma spraying approach, alter the functionality of the implant.

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Section: Doping Results On Electrochemical and Mechanical Propertiesmentioning

confidence: 99%

Consequences of hydroxyapatite doping using plasma spray to implant biomaterials

Mehta

Singh

2023

J. Electrochem. Sci. Eng.

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“…This alloy is reported to have a combination of a low Young’s modulus, high strength, and good ductility [ 19 , 20 ]. The literature also reports on alloy combinations such as FeMoTaTiZr [ 21 ], TiTaFeZrNb [ 22 ] proposed for use as metallic biomaterials.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Structure and Corrosion Resistance of Novel High-Entropy Alloys for Potential Biomedical Applications

et al. 2022

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High-entropy alloys are a new generation of materials that have attracted the interest of numerous scientists because of their unusual properties. It seems interesting to use these alloys in biomedical applications. However, for this purpose, the basic condition of corrosion resistance must be fulfilled. In this article, selected corrosion properties of self-composed high-entropy alloys are investigated and compared with conventional biomedical alloys, that is titanium alloys and stainless steels. Corrosive parameters were determined using the potentiodynamic method. X-ray diffraction studies were performed to characterize the crystal structures. Microstructures of the prepared materials were examined using a scanning electron microscope, and surface hardness was measured by the Vickers method. The results show that investigated high-entropy alloys are characterized by simple structures. Three out of four tested high-entropy alloys had better corrosion properties than conventional implant alloys used in medicine. The Al0.7CoCrFeNi alloy was characterized by a corrosion potential of −224 mV and a corrosion current density of 0.9 μA/cm2; CoCrFeNiCu by −210 mV and 1.1 μA/cm2; TiAlFeCoNi by −435 mV and 4.6 μA/cm2; and Mn0.5TiCuAlCr by −253 mV and 1.3 μA/cm2, respectively. Therefore, the proposed high-entropy alloys can be considered as potential materials for biomedical applications, but this requires more studies to confirm their biocompatibility.

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Wear and Electrochemical Behavior of High-Nitrogen, Nickel-Free Austenitic Stainless Steel Produced by Hot Powder Forging

Tangestani

Hadianfard

Tayebi

et al. 2022

J. of Materi Eng and Perform

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Bio-Functionalization of a Novel Biocompatible High Entropy Alloy Used For Bone Implants

Cited by 4 publications

References 56 publications

Consequences of hydroxyapatite doping using plasma spray to implant biomaterials

Consequences of hydroxyapatite doping using plasma spray to implant biomaterials

Investigation of the Structure and Corrosion Resistance of Novel High-Entropy Alloys for Potential Biomedical Applications

Wear and Electrochemical Behavior of High-Nitrogen, Nickel-Free Austenitic Stainless Steel Produced by Hot Powder Forging

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