Ricardo Floriano

• Abstract

  Multicomponent alloys such as high entropy alloys have attracted a lot of attention due to their remarkable set of attractive functional properties. These alloys may have excellent mechanical and corrosion properties in addition to high biocompatibility for applications as biomaterials, or even exhibit competitive hydrogen storage properties for applications as metal hydrides with high gr…

  Structure, processing and properties of advanced multicomponent alloys for biomedical and energy storage applications, AP.PNGP.PI

• Abstract

  More recently, multicomponent alloys such as high-entropy alloys - in special the alloys containing single C14 laves phase with hexagonal structure - have been tested as hydrogen storage materials and very promising results have been reported such as high hydrogen storage capacity with fast kinetics at room and moderate temperatures without the need of any activation procedure. In spite …

  Study of the mechanisms of metal-hydrogen reactions in multicomponent alloys with C14 - hexagonal laves phases, AP.R

• Abstract

  This master's project proposes a systematic study of the corrosion properties and biocompatibility of multicomponent alloys from the system: TiZrNbTaFeHf1-xMoX with a high tendency to form CCC-type structures. The chosen alloys contain non-toxic elements in their composition and have not yet been reported in the literature. They will be prepared by arc melting. After arc melting, the allo…

  Study of Corrosion Behavior and Biocompatibility of Multicomponent Alloys derived from Ti-Zr-Nb-Ta-Fe Hf1-xMox System for Biomaterial Applications, BP.MS

• Abstract

  This doctoral project aims to conduct a comprehensive investigation on the synthesis and advanced microstructural characterization of multicomponent alloys in the (TiZrNbTa)90Cu10-xAgx and (TiZrNbMo)90Cu10-xAgx systems, where x = 0, 2.5, 5.0, 7.5, and 10 at%, exhibiting a body-centered cubic (BCC) crystal structure. These alloys, containing non-toxic elements, have not been previously doc…

  Processing and characterization of mechanical and biocompatibility properties of (TiZrNbTa)90Cu10-xAgx and (TiZrNbMo)90Cu10-xAgx (X = 0, 2.5, 5.0, 7.5 and 10 at%) multicomponent alloys designed for the biomedical applications, BP.DR

• Abstract

  The present master's project involves the design, selection, processing and characterization of multicomponent alloys from the systems: TiZrNbCrNiCo and TiZrVFeNi, which can demonstrate good properties for hydrogen storage in the solid state. From the combination between elements with high affinity for hydrogen and hydride formers (such as Ti, Zr, Nb and V) and elements with low affinity …

  Design, Synthesis and Characterization of Hydrogen Storage Properties in Multicomponent Alloys of the TiZrNbCrNiCo and TiZrVFeNi System, BP.MS

(Only some records are available in English at this moment)

• Abstract

  The medical device industry increasingly demands materials combining superior mechanical performance and excellent biocompatibility. In this context, high-entropy alloys (HEAs) and high-entropy ceramics (HECs) have emerged as promising candidates due to their unique structural and compositional versatility. This project, developed in collaboration with Kyushu University (Japan), focuses …

  Entropy Effects on Mechanical, Corrosion, and Biocompatibility Properties of Nanostructured Ti-Nb-Zr-Ta-Hf Bio-High Entropy Alloys and Ceramics Processed via HPT and SPS, BE.EP.DR

• Abstract

  This project, in collaboration with the Carbon-Neutral Energy Research (I²CNER) from the University of Kyushu, Japan, expects to explore new mechanical processing for High Entropy Alloys (HEAs) for enhance hydrogen storage capabilities, targeting operations at low temperatures and pressures for solid-state hydrogen storage systems. By focusing on multiphase BCC and C14 Laves multicompone…

  Microstructural Control and Hydrogen Storage Performance of C14 and BCC - High Entropy Alloys Processed by High-Pressure Torsion, BE.EP.DR