In this work, the influence of the substrate bias on the crystalline structure and surface composition of Ti6Al4V thin films prepared by rf magnetron sputtering were studied. Samples were grown onto two different types of substrates: AISI 420 steel and common glass using a Ti6Al4V (99.9 %) target. Substrate bias was varied from –100V to –200 V. Samples were characterized by X-ray diffraction (X...

Electron Beam Melting (EBM) is an Additive Manufacturing technique which can be used to fabricate complex structures from alloys such as Ti6Al4V, for example for orthopaedic applications. Here we describe the use of EBM for the fabrication of a novel Ti6Al4V structure of a regular diamond lattice incorporating graded porosity, achieved via changes in the strut cross section thickness. Scanning ...

The oxidative burst of human blood cells in the presence of different metal materials was investigated using chemiluminescence assay. Commercial pure titanium (Ti), titanium alloy (Ti6Al4V), and stainless steel 316L (SS) in particulate form with <20 μm in size were used. The effect of particulate materials opsonisation on the upregulation of the respiratory burst production by blood cells was a...

Recently, some novel surface engineering techniques have been developed, which may be used for extending lifetime of artificial joints; however, the full potential will not be realised until the tribological behaviour of surface engineered bio-medical materials has been fully characterised. In the present investigation, a pin-on-disc tribometer has been used to evaluate the tribological respons...

Advanced glycation end products (AGEs) irreversibly cross-link proteins with sugars and accumulate at a higher age and in diabetes, processes which can interfere with the integration of implants into the tissue. Glyoxal is a highly reactive glycating agent involved in the formation of AGEs and is known to induce apoptosis, as revealed by the upregulation of caspase-3 and fractin (caspase-3 bein...

In this paper, we present the mechanisms of premature fracture modular neck stems in two case studies: (I) when and stem are both made same Ti6Al4V alloy, (II) from different alloys, CoCrMo alloy. Our study integrates orthopedic patients who have undergone primary uncemented THA for usual indications centers (Community Health Centre University Medical Centre). Both part national public health c...

Abstract This work presents the microstructural investigation of an in situ synthesized TiB/Ti6Al4V-ELI composite that was manufactured with additive manufacturing (AM) technique known as laser metal deposition (LMD). A single-track sample by adding TiB 2 to Ti6Al4V-ELI at mass volume 5% and characterized for microstructure hardness. It found reaction promoted formation quasi-continuous network...