A simple, inexpensive, and novel method was used to prepare electrocatalysts from Cu supported on titanium dioxide (Cu/TiO2). XRD, SEM, and TEM characterizations confirmed different loadings of Cu nanoparticles (NPs) on TiO2. Cyclic voltammetry tests indicated that Cu/TiO2 exhibited lower overpotential for CO2 reduction than that of Cu NPs. Moreover, 40 wt % Cu/TiO2 exhibited the highest farada...

• Created a system in which the liquid phase sintering process is established. Aluminum was added to pure Cu form Cu-rich mixtures with different Al contents. The in-situ alloying of Cu-Al achieved an energy density (ED) two times lower than ED used Cu, leading smoother and denser parts. Achieved simultaneous joining 3D printing highly reflective metals. high optical reflectivity copper (Cu) ne...

Atom-probe tomography, transmission electron microscopy, X-ray diffraction and first-principles calculations are employed to study: (i) compositional evolution of GPII zones and h0 precipitates; and (ii) solute segregation at a-Al/h0 interfaces in Al–1.7 at.% Cu (Al–4 wt.% Cu) alloys. GPII zones are observed after aging at 438 K for 8 h, whereas higher aging temperatures, 463 K for 8 h and 533 ...

Cu–Al bronzes are interesting metallic materials, demonstrating higher hardness, wear resistance, corrosion resistance and a lower friction coefficient as compared with unalloyed copper. The powder metallurgy approach to the fabrication of these alloys presents opportunities tailor their phase composition grain size. In present work, structural characteristics, properties Cu-10 wt.% Al obtained...

The pathogenic mutant (P174L) of human Sco1 produces respiratory chain deficiency associated with cytochrome c oxidase (CcO) assembly defects. The solution structure of the mutant in its Cu(I) form shows that Leu-174 prevents the formation of a well packed hydrophobic region around the metal-binding site and causes a reduction of the affinity of copper(I) for the protein. K(D) values for Cu(I)W...

Effect of artificial ageing temperature on the mechanical properties of Al-6Si-0.5Mg alloy containing 0.5 – 4 wt% Cu was studied. The solution treated alloys containing different amounts of Cu were aged isochronally for 1 hour at temperatures up to 300C. The precipitation stages during ageing were monitored by hardness measurements. Tensile and impact properties were determined by standard test...

The creep behavior and microstructural evolution of three Al–Cu–Mg–Ag alloys with Cu content around its solid solubility limit in Al (5.65 wt %) were investigated at 180–240 °C applied stress 150–300 MPa. resistance aged alloy, which is mainly determined by the number density ? phase, best for 6.00 % Cu, better 5.30 worst 5.65 Cu. After solid-solution treatment, lowest matrix alloy observed due...