Abstract A new implant Ti–7Al–3V–2Mo–2Fe alloy was elaborated and its behaviour in Ringer–Brown Ringer solutions (of different pH values) studied using cyclic potentiodynamic linear polarisation, electrochemical impedance spectroscopy (EIS) scanning electron microscopy (SEM) with link energy dispersive X‐ray system (EDX). Cyclic polarisation curves revealed that the is self‐passivated solutions. Pitting corrosion appeared alkaline solution but at very electropositive values of breakdown...

Abstract The mechanical properties of Ti6Al7Nb alloy deformed and heat treated at elevated temperatures were correlated with its microstructure corrosion behaviour in Ringer (of different pH values: 2.49, 6.9 8.9) Ringer–Brown solutions. Microstructural analysis revealed a Widmanstatten structure for the alloys 1100 °C (β field) α grains 930 (α + β field). thermo‐mechanical processing improved electrochemical alloys, especially their passive state. Open circuit potential variations time...

In this paper, corrosion and tribocorrosion tests have been conducted on three biomaterials: Ti–6Al–4V 316L steel that are well-known commercial biomaterials Ti–10Zr–10Nb–5Ta, a new biomaterial elaborated in levitation-melting furnace. Tests five different electrolytes: NaCl (9g/l), Ringer's solution, phosphate buffered saline solution (PBS) with without an addition of bovine serum albumin (BSA). Two amounts BSA were used: 1 5 g/l. PBS Ti–10Zr–10Nb–5Ta presents the best resistance....

The objective of this experimental work was to examine and characterise the route for obtaining demonstrative temporary biodegradable personalised implants from Mg alloy Mg-10Zn-0.5Zr-0.8Ca (wt.%). This studied obtained in its powder state using mechanical alloying method, with shape size characteristics suitable ensuing 3D additive manufacturing SLM (selective laser melting) procedure. procedure applied various processing parameters. All samples were characterised microstructurally (using...

A new Mg-Zn-Zr-Ca alloy in a powder state, intended to be used for custom shaped implants, was obtained via mechanical alloying method from pure elemental powder. Further, the processed by PBF-LB/M (powder bed fusion with laser beam/of metal) procedure obtain additive manufactured samples small biodegradable implants. series of microstructural, and corrosion analyses were performed. The SEM (scanning electron microscopy) analysis revealed good dimensional homogeneity, uniform colour, no...

The aim of the present work was to apply a mechanical alloying method obtain Mg-10Zn-0.5Zr-0.8Ca powder-alloy with morphological and dimensional characteristics, proper for subsequent selective laser melting (SLM) processing. process applied at different values milling time. Thus, evolution main characteristics experimented could be studied. conclusion this study is that possesses good potential almost rounded morphology fine dimensions, further additive manufacturing procedures such as melting.

Abstract A new Ti‐6Al‐2Nb‐1Ta alloy was obtained for to satisfy the mechanical and anticorrosion requirements in neutral corrosive environment. The corrosion behaviour of this 0.1 M Na 2 SO 4 , 3% NaCl solutions synthetic sea water studied paper, using potentiodynamic linear polarisation method, electrochemical impedance spectroscopy (EIS) monitoring open circuit potentials. structure represents an α + β uniform with un‐oriented grains. From curves it resulted that is self‐passivated all...

The aim of the present paper is to apply mechanical alloying process obtain from powder components a new biodegradable Mg-based alloy system Mg-xZn-Zr-Ca, with high biomechanical and biochemical performance. Various processing parameters for have been experimented ultimate goal establish an efficient route production small parts medical domain. It has observed that same milling parameters, composition powders influenced size shape. On other hand, composition, highest speed time conduct finer...

The effect of nitrogen implantation on mechanical and tribological properties Ti-6Al-4V Ti-10Zr-10Nb-5Ta alloys was studied. Increasing dose from 1 × 10 16 N + /cm 2 to 17 leads increase gradually both hardness Young's modulus. results show that allowed double the value modulus triple hardness. Friction tests have been conducted against 100Cr6 steel alumina balls showed behavior two depend nature counterpart material is strongly affected by implanted nitrogen.

The aim of the present paper is to apply laser powder bed fusion process a new biodegradable Mg-Zn-Zr-Ca alloy prepared via mechanical alloying method from pure components. This additive manufacturing expected allow for obtaining high biomechanical and biochemical performance. Various processing parameters are tested, with special focus on energy density-E [J/mm3]-which calculated all experiment variants, which represents an important parameter, dependent upon rest. goal trials find most...

Abstract The aims of the study were to investigate electrochemical response a new dental Au‐20Pd‐10Ag‐5Ti alloy in artificial Carter‐Brugirard saliva and assess its biocompatibility using gingival fibroblast culture. Electrochemical techniques potentiodynamic linear polarization used. Also, open circuit potentials corresponding potential gradients monitored for 5000 exposure hours. was estimated by LDH‐cytotoxicity, MTT cell proliferation assays, assessment substrate‐dependent changes...

A new Mg-Zn-Zr-Ca alloy in powder state was obtained via mechanical alloying method, from pure elemental powder. Further, the powder-alloy processed by selective laser melting (SLM) procedure to obtain 3D printed samples for small biodegradable implants. series of microstructural, and corrosion analysis were performed. The SEM reveal a good dimensional homogeneity, with uniform colored, no agglutinated almost rounded particles, suitable procedure. SLM robust unbreakable morphology, porosity...

Abstract Neuromodulation therapies are often applied to peripheral nerves. These nerves can have physiological activity that interacts with the evoked by electrical stimulation, potentially influencing targeted neural output and clinical outcomes. Our goal was quantify changes in sensory unit response variations stimulation frequency amplitude. In a feline model, we cutaneous brushing evoke pudendal nerve afferent without via cuff electrode. We recorded microelectrode arrays implanted...

This paper studies the long term (3000 exposure hours) behaviour of a new titanium base Ti-6Al-4V-1Zr alloy un-covered and covered with hydroxyapatite (HA) or bovine serum albumin/hydroxyapatite (BSA/HA) in Ringer solution different pH values for to reproduce complex conditions from human body.Electrochemical cyclic voltammetry linear polarization methods were used.Also, open circuit potentials gradients monitored 3000 immersion hours values.Bare presented more electropositive corrosion...

Thermal spraying technologies are an effective way to ensure surface protection against destructive effects of wear, corrosion and oxidizing phenomena which can be applied in majority industrial sectors for improving properties new parts or reconditioning worn out technology. The powders used this study mainly the repair cast iron (e.g. engine blocks) build - up press tools car bodies, threads, turbine-guided vanes, rotating valves shafts eccentric presses. Three types tubular composites...

In this paper, different thermal-mechanical treatments were applied on Ti6Al4V alloy and structural characteristics correlated with anticorrosive properties in Ringer-Brown solution. Alloys present self-passivation more electropositive corrosion potentials than of titanium; all electrochemical parameters have improved values, resulting the beneficial effect thermal treatment. Both alloys base metal are very resistant Metallographic studies show that increased resistance physiological fluids.

Abstract not Available.

Abstract not Available.