Progress in materials science requires deeper understanding of the correlation of properties to internal structure and how they get altered to tailor the required properties. The paper aims to explore the variation in the mechanical properties on the degree of cold work in Beryllium copper. Hard...

A complex study of aging kinetics for both coarse-grained and nanostructured by severe plastic deformation Cu – 2 wt% Be alloy is reported. It is shown that aging of a coarse-grained alloy leads to continuous formation of nanosized CuBe body centred cubic (bcc, CsCl – type) semi-coherent parti...

In this work a textured diamond-reinforced copper-beryllium composite was produced and its tribological behavior was evaluated. In a first stage, a Cu–Be matrix was textured by laser and diamond particles were functionalized with a Cu–Sn–Ti eutectic alloy by mechanical alloying. The second st...

The mechanical response of a copper-2 wt% beryllium alloy in either a solution treated or aged condition has been investigated within the shock loading regime. In terms of Hugoniot Elastic Limit, shear strength and spall (dynamic tensile) strength, the material in the aged condition has been obs...

Carbon-containing MoS2 catalysts with specific surface areas of up to 32.4 m2/g are prepared in situ from ethylenediammonium thiomolybdate (EtDaT, n = 2), 1,4-butane-diammonium thiomolybdate (BuDaT, n = 4), 1,6-hexanediammonium thiomolybdate (HeDa, n = 6), and 1,8-octanediammonium thiomolybdate ...

A pre-sulfided hydrotreating catalyst was prepared via thiomolybdate intercalated NiAl layered double hydroxides (LDHs) followed by calcination under N2. Upon calcination, the decomposition of thiomolybdate in the interlayer produces MoS2 and releases sulfur to react with nickel in the sheets to...

Platinum group metals find extensive use in automobile catalysts, space materials and cancer therapy. Their natural resources are limited thus their recovery from the secondary sector has assumed a great significance. Liquid–liquid extraction provides an effective methodology for the said purpo...

This work focuses on the sorption recovery of platinum (II, IV) and rhodium (III) simultaneously present in chloride solutions, freshly prepared and stored over 3 months, on commercial anion exchangers with different physical and chemical structure. The sorption was carried out from solutions wi...

For the first time, the concentrations of Pt and Rh in 42 different alcoholic beverages (white and red wines, vodka and brandy) produced in Italy, Malta and Gozo were investigated. Only the voltammetric techniques, in particular, differential Pulse Voltammetry (DPV/a) and Adsorptive Stripping Vo...

BackgroundThere is little reliable information on human exposure to the metals platinum (Pt), palladium (Pd) and rhodium (Rh), despite their use in enormous quantities in catalytic converters for automobile exhaust systems.

During platinum group metals (PGMs) refining the possibility exists for dermal exposure to PGM salts. The dermal route has been questioned as an alternative route of exposure that could contribute to employee sensitisation, even though literature has been focused on respiratory exposure. This st...

Hydrogen oxidation and evolution reactions (HOR and HER) in alkaline media are very kinetically sluggish, which becomes one of major barriers for the breakthrough of anion exchange membrane fuel cells. Thus, developing highly active and economically competitive HOR/HER electrocatalysts for alkal...

In this study the exposure of the general population in Germany to platinum and rhodium and its determinants was investigated in 259 participants (subdivided in three groups) by urine analyses and assessment of the dental status. Complementary, an interview including questions characterising pos...

Platinum (Pt), palladium (Pd) and rhodium (Rh) are most widely used in the production of automotive catalytic converters that serve to reduce toxic emissions from motor vehicles. The aim of this study was to quantitatively determine the levels of platinum, palladium and rhodium in the PM10 and P...

The current study extends the insight into solid-state diffusion in alloys of the Platinum Group Metals (PGMs). Thereby, we pave the way for tailor making surface compositions of binary platinum (Pt) – rhodium (Rh) model catalysts, with deposited rhodium layers on the surface of Pt single cryst...

Ni-Cr-Fe mixed oxides (NiCrxFe2-xO4) are formed as a corrosion oxide films on structural material surface of coolant or heat transport circuit in water-cooled nuclear reactors. Study on the dissolution behavior of these oxides forms a critical part in development of an efficient chemical deconta...

The aim of this study was to examine the effect of chromium(III), iron(III), molybdenum(III) and nickel(II) and their combinations on pro- and antioxidant activity in mouse embryo fibroblasts and liver cancer cells.The present study shows that chromium(III), iron(III), nickel(II) and molybdenum(...

The grain boundary diffusion of chromium in polycrystalline nickel was studied by means of tracer experiments at 346–668 °C. Intensity-depth profiles were recorded by secondary ion mass spectrometry (SIMS), which allowed short diffusion distances, and therefore relatively low temperatures, to ...

IntroductionDual mobility cups have become the implant of choice for older patients with a high risk of dislocation. However, to our knowledge, no study has explored the possibility of metal ion production with these implants that incorporate a polyethylene-on-metal bearing. This led us to condu...

Background/PurposeChromium and nickel are important soil pollutants in Taiwan. Previously, we showed that blood chromium levels correlated strongly with soil chromium levels. Our observation that many patients with dry eyes or a dry mouth came from areas where soils contain high chromium levels ...