Victor Geantǎ
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Bioabsorbable Mg-Zn Alloys: Study of Their Performance in Simulated-Fever Conditions Open
Mg-Zn alloys are a promising type of biodegradable material for orthopedic devices, combining the natural advantages of Mg with the properties provided by Zn. This study examines how temperature affects the behavior of three MgxZn alloys (…
The Effect of Zn Addition on Bioabsorbable Mg Alloys Open
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TaMoNbTiZr Multielement Alloy for Medical Instruments Open
In this paper, a new TaMoNbTiZr multielement alloy has been designed, using chemical elements that exhibit extremely low bio-toxicity for the human body. The alloy was obtained by melting in vacuum arc remelting (VAR) equipment MRF ABJ 900…
New FeMoTaTiZr High-Entropy Alloy for Medical Applications Open
High-entropy alloys are novel metallic materials distinguished by very special mechanical and chemical properties that are superior to classical alloys, attracting high global interest for the study and development thereof for different ap…
Obtaining Metal-Ceramic Layers by Laser Cladding using Alumina Powder Mixtures Open
In the paper a comparative analyse of laser cladding behaviour of metal-ceramic powder mixture was studied. The use of In718 alloy as a matrix material, with a lower melting range than SS304, allowed the reduction of the overheating of the…
View article: Structural Parameters and Behavior in Simulated Body Fluid of High Entropy Alloy Thin Films
Structural Parameters and Behavior in Simulated Body Fluid of High Entropy Alloy Thin Films Open
The structure, composition and corrosion properties of thin films synthesized using the Pulsed Laser Deposition (PLD) technique starting from a three high entropy alloy (HEA) AlCoCrFeNix produced by vacuum arc remelting (VAR) method were i…
Design of Ti-Mo-W Alloys and Its Correlation with Corrosion Resistance in Simulated Body Fluid (SBF) Open
Titanium and its based alloys are frequently selected for designing biomedical implants and it is thus necessary to study as detailed as possible their corrosion behavior in biological solutions, such as those in the human body environment…
Mechanical and Corrosion Behavior of Zr-Doped High-Entropy Alloy from CoCrFeMoNi System Open
The aim of the paper is to study the Zr addition effect on the mechanical properties and corrosion behavior of a high-entropy alloy from the CoCrFeMoNi system. This alloy was designed to be used for components in the geothermal industry th…
A New Eclectic Open Surgical Management of Recurrent, Residual, or Neglected Clubfoot in Children: An update on old and new in the field Open
Background context: All patients with clubfoot, regardless of age, are treated by the Ponseti or Bensahel technique as the first conservative therapeutic method. These techniques have greatly increased the success rate, which still remains…
MG-ZN-Y BIOCOMPATIBLE ALLOYS PRODUCED IN A LEVITATION FURNACE Open
The Mg-Zn alloys have a controlled biodegradability in biological fluids.Alloys in the Mg-Zn system must be manufactured from high-purity raw materials, and the production process must be free of impurities from the crucibles.The mechanica…
View article: Characteristics of Thin High Entropy Alloy Films Grown by Pulsed Laser Deposition
Characteristics of Thin High Entropy Alloy Films Grown by Pulsed Laser Deposition Open
Starting from solid-solutions (SS) of AlCoCrFeNix high-entropy alloys (HEAs) that have been produced with high purity constituent elements by vacuum arc remelting (VAR) method varying the nickel molar ratio x from 0.2 to 2.0, we investigat…
Impact Behavior of the Ballistic Targets Package Composed of Dyneema Polymer and High Entropy Alloy Structures Open
Ballistic targets are multi-material assemblies that can be made of various materials, such as metal alloys, ceramics, and polymers. Their role is to provide collective or individual ballistic protection against high-speed dynamic penetrat…
Effect of Diffusion on Dissimilar Welded Joint between Al0.8CoCrFeNi High-Entropy Alloy and S235JR Structural Steel Open
This research focused on the investigation of the metallurgical behavior of the Al0.8CoCrFeNi high-entropy alloy and S235JR structural steel, welded with (Ni, Fe)-rich filler metal, by the Gas Tungsten Arc Welding (GTAW) method. The electr…
In-Vitro Analysis of FeMn-Si Smart Biodegradable Alloy Open
Special materials are required in many applications to fulfill specific medical or industrial necessities. Biodegradable metallic materials present many attractive properties, especially mechanical ones correlated with good biocompatibilit…
Assessment of the Effects of Si Addition to a New TiMoZrTa System Open
Ti-based alloys are widely used in medical applications. When implant devices are used to reconstruct disordered bone, prevent bone resorption and enhance good bone remodeling, the Young’s modulus of implants should be close to that of the…
Design, Synthesis, and Preliminary Evaluation for Ti-Mo-Zr-Ta-Si Alloys for Potential Implant Applications Open
Considering the future trends of biomaterials, current studies are focused on the corrosion resistance and the mechanical properties of new materials that need to be considered in the process of strengthening alloys with additive non-toxic…
Static Testing and Fatigue Behavior of Three High-Entropy Alloys Open
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Bio-Functionalization of a Novel Biocompatible High Entropy Alloy Used For Bone Implants Open
In this paper, a novel biocompatible alloy defined as FeMoTaTiZr was obtained and functionalized by hydroxyapatite-based coatings (HAP) in order to increase their biocompatibility, bioactivity, and resistance to corrosion for to be used as…
Effects of nickel content on the microstructure, microhardness and corrosion behavior of high-entropy AlCoCrFeNix alloys Open
In this study the effect of three different nickel concentration on the microstructure, hardness and corrosion properties of high entropy alloys (HEAs) from AlCrFeCoNi system as an alternative material for medical instruments fabrication w…
Modeling and Experimental Results of Selected Lightweight Complex Concentrated Alloys, before and after Heat Treatment Open
Lightweight complex concentrated alloys (LWCCA), composed of elements with low density, have become a great area of interest due to the high demand in a large number of applications. Previous research on LWCCAs was focused on high entropy …
Cutting Behavior of Al0.6CoCrFeNi High Entropy Alloy Open
There is an increased interest in high entropy alloys as a result of the special possibilities of improving the mechanical, physical or chemical characteristics resulting from metallic matrices made of different chemical elements added in …
Effects of Fe and Mn on Microstructure and Microhardness of Titanium Alloys Open
Titanium is one of the most appreciated biocompatible materials, as it possesses both good mechanical characteristics but also high corrosion resistance in contact with biological environments. Initially, Ti-6Al-4V trade mark was used for …
Characterization and Testing of High-Entropy Alloys from AlCrFeCoNi System for Military Applications Open
High-entropy alloys (HEAs) can be obtained using various metallurgical processes such as vacuum arc remelting (VAR), induction melting, powder metallurgy, additive manufacturing, plasma sintering of powders, etc. Among these methods, the o…
Low Density Multi-principal Element Alloy from Al-Mg-Ca-Si-B System Open
The scientific paper presents a numerical modeling of the chemical composition for the optimization of the multicomponent light alloys in the Al-Mg-Ca-Si-B system. The effects of the proportion of each chemical element on the main characte…
Determination of material constants for high strain rate constitutive model of high entropy alloys Open
The paper deals with constitutive models determination for a group of high entropy materials (coded Bl-x). The procedure includes the following steps: experimental determination of mechanical characteristics for quasi-static domain through…
Effects of the chemical composition on the microstructural characteristics of Ti-Nb-Ta-Zr alloys Open
Among the biomedical alloys, titanium based alloys are currently the best solution for implantation as a result of their low levels of toxicity. To improve mechanical properties, a series of chemical compositions of some titanium alloys ha…
Obtaining and characterisation of high entropy alloys used for medical applications Open
The experimental CrFeMoNbTaTiZr alloys were designed based on the extremely low bio-toxicity of the chemical elements. They are currently used as a basis for alloying of classical alloys used in medical device manufacturing. From this allo…
In vitro corrosion behavior of Ti-Mo-W alloys in artificial saliva Open
Titanium and its alloys are preferred materials used for medical devices manufacturing due to their specific properties. The corrosion behavior in artificial saliva of the newly developed Ti-Mo-W alloys, with elastic modulus closer to the …