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2 2022

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Structural and Physical Characterization of New Ti-Based Alloys

Baltatu Iustinian, Sandu Andrei Victor, Baltatu Madalina Simona, Benchea Marcelin, Achitei Dragos, Ciolacu Florin, Perju Manuela-Cristina, Vizureanu Petrica, Benea Lidia

Archives of Metallurgy and Materials

2022

Vol. 67, iss. 1

255--259

Production of Ti-based alloys with non-toxic elements give the possibility to control the market of medical applications, using alloys with appropriate properties for human body, contributing to improving the health of the population. Determination of parameters of atomic and magnetic structure of functional biomaterials demonstrating interesting physical phenomena and being promising for medical applications in a wide range of thermodynamic parameters; exploration of the role of cluster aggregation in the formation of physical properties. Paper is about the obtaining of the new titanium system alloys, the determining their characteristics and structure, and obtaining information concerning phase transitions and some mechanical properties. Ti15Mo7ZrxTa (5 wt.%, 10 wt.% and 15 wt.%) alloys developed shows a predominant β phase highlighted by optical microstructure and XRD patterns. A very low young modulus of alloys was obtained (43-51 GPa) which recommends them as very good alloys for orthopedic applications.

“In-vitro” Tests on New Biodegradable Metallic Material Based on ZnMgY

Panaghie Catalin, Cimpoesu Nicanor, Benchea Marcelin, Roman Ana-Maria, Manole Vasile, Alexandru Adrian, Cimpoesu Ramona, Cazacu Marius Mihai, Wnuk Izabela, Zegan Georgeta

Archives of Metallurgy and Materials

2022

Vol. 67, iss. 2

587--594

Biodegradable materials represent a new class of biocompatible materials with applications in many medical cases where the support must be provided only for a certain period. In this article obtaining of ZnMgY alloy is presented along with some basic characteristic investigations like chemical composition (energy dispersive spectroscopy - EDS), microstructure (optical microscopy - OM and scanning and electron microscopy - SEM), immersion behavior in 10xDPBS (Dulbecco Phosphate Buffer Saline) solution (mass loss and surface degradation), electro-corrosion behavior (potentiostat with a three electrodes cell) and micro-hardness of the experimental alloy compared to cast Zn and ZnMg materials. The results present an improvement of micro-hardness of Zn by alloying with Mg and Y and a modification of corrosion resistance.