EUROPEAN CONGRESS AND EXHIBITION ON ADVANCED MATERIALS AND PROCESSES - EUROMAT 2021

The evolution of thermoelectric materials, in order to produce electric power from waste heat or refrigeration by applying electrical current power on them, is one of the pioneering topics of the scientific research. Recent experimental researches on new thermoelectric materials, besides the high figure of merit, focus on the low cost, accessibility, low environmental impact mechanical and...

In the automotive industry hydrodynamic lubrication is a concern in most of the machinery where there are two contacting surfaces in relative motion. The optimization of these surfaces through micro-texturing represents a very promising way to reduce friction, in order to achieve enhanced lifetimes and reduced lubricant use. However, It is very difficult to predict these optimal texturing...

Introduction/Purpose
Titanium alloys are commonly used as metallic biomaterials due to their good biocompatibility, high electrochemical corrosion resistance, favourable fatigue strength and a high strength to weight ratio. However, they are bioinert. Therefore, in the present work a composite coating of zein and bioactive mesoporous sol-gel glass (MSGG) were electrophoretically deposited...

In general, uncoated polyamide tends to have a relatively high wear rate if polyamide is integrated in sliding systems (e.g. hinges, bearings, rack rails). As a consequence of that any kind of material failures will occur much faster than with a low friction coating.
Deposition strategies to obtain low friction and wear resistant coatings on 3D-printed, rough polyamide 12 (PA) surfaces were...

The versatile adjustability of the sol-gel chemistry is a great technological advantage over other coating systems, especially due to the usability of organic and inorganic precursors as well as the variation of the reaction control and drying, curing, compaction. Alongside the many promising possibilities for producing functional coatings using the sol-gel process, challenges remain by (1)...

The adjustment of surface free energy of various substrates plays a major role in coating technology and is perceived as an important part in the design of microfluidic devices for medical applications. Here we present a deposition strategy for two different organosilicon substances, vinyltrimethoxysilane (VTMO) and hexamethyldisiloxane (HMDSO), and the impact of process parameters on plasma...

Commercially available β-type titanium (Ti) alloys such as Ti6Al4V have been commonly used as bone implants. However, concerns about the toxic effects of vanadium (V) and aluminium (Al), that could cause hematological and biochemical alterations, osteomalacia, and/or peripheral neuropathy and Alzheimer’s disease, respectively, have prompted the development of Al- and V-free β-Ti alloys. Thus,...

Implant-associated infections are a crucial issue for the failure of medical treatments which leads economic and social associated costs. Bacterial adhesion and biofilm formation are important steps for the development of implant-related infections. Titanium-base bulk metallic glasses (BMGs) have attracted much attention for future medical applications such as orthopedic implants for...

Iron/Non-Magnetic (NM) metallic bilayers with a variety of cupping layers as spin detectors have been a topic of extensive studies in the last years in the field of spintronics. In the specific project we study the effect of a very thin overlayer for spin transport phenomena. Except of their main role, the NM layers protects the magnetic film in order to remain chemically pure and structurally...

Silicides such as CrSi2, MnSi1.75, Mg2Si, etc. can be produced by the solid-state reaction between metals and silicon. Reactions of metals with single-crystal silicon have received much attention in both research and production because of their high melting point, high oxidation resistance and satisfactory thermoelectric properties. A variety of techniques have been used to prepare these...

The results presented in this study were developed within the transnational “SYMPA” project, funded by the German “Bundesministerium für Bildung und Forschung” and the Austrian “Bundesministerium für Klimaschutz, Umwelt, Energie, Mobilität, Innovation und Technologie”. SYMPA aims to develop sustainable materials, processes and post-treatment methods for the use of stereolithography (SLA)...

Despite a great industrial demand for superhard (hardness > 40 GPa) and on the same time tough thin films with high thermal stability (T > 1000°C) such films can currently not be synthesized. By combining the material strategy of HEA nitrides with the design concepts of nanostructured thin films it is assumed that new horizons in the combination of the aforementioned criteria can be...

Keywords: Hard chromium, tensile test, adhesion properties, coating

Hard chromium plating process is widely used in aerospace industry to enhance wear resistance of parts. The traditional process uses hexavalent chromium, a CMR classified substance which is submitted to authorization by the European REACh regulation since 21st September 2017. Such substances are meant to disappear in the...

FEBID is a direct nanolithography technique based on the local dissociation of adsorbates upon the irradiation with electrons, used for making 2D and 3D nanostructures.[1] CVD is a process where the volatile precursor is transported in the vapour carrier gas to the reactor chamber, decompose on a heated substrate and deposit a solid material.[2] The choice of the precursor is crucial for the...

Rhenium Borides have been proposed as a new high hard material with high resistance to wear, cracks, and abrasion in several theoretical and experimental studies, which makes this material used as an alternative to diamond. Furthermore, rhenium borides are suitable for industrial, metallurgic, and aeronautical applications since they combine properties of metals such as high electrical...

Boron-based diffusion layers and coatings are capable to provide enhanced mechanical properties of machine elements and tools. Several methods of surface engineering result in the synthesis of such coatings and layers. In the present work, electron-beam alloying (EBA) and thermal-chemical treatment (TCT) of L6 and H21 tool steels were studied. Boron carbide and aluminum powders as alloying...