Incorporation of metallic particulate reinforcements in eutectic Sn-Ag solder re­ sults in the formation of intermetallic compounds (IMCs) along particulate/ solder interfaces with different morphologies. For instance, “sunflower” and “blocky faceted” IMC shapes have been observed around Ni particle reinforce­ ments incorporated in the eutectic Sn-Ag solder matrix. The time and tempera­ ture ab...

Ni, Cu and Ni-Cu catalysts supported on high surface area graphite were synthesized by incipient wet impregnation. Also, the effect of doping support with alkali oxides (Li, Na K) was studied. The tested in formic acid decomposition reaction to produce hydrogen. bimetallic catalyst doped K showed best catalytic performance 100% conversion at 130 °C a 95% selectivity turnover frequency (TOF) fol...

In order to reveal the influence of the metals of soil-water interface in a manganese mine (Xiangtan, China), on local water environment, there are six kinds of metals (Mn, Ni, Cu, Zn, Cd, and Pb) characterized by measuring their concentration, correlation, source, and special distribution using principal component analysis, single factor, and Nemero comprehensive pollution index. The results s...

Results of highly precise all-electron local spin density FLAPW calculations on (i) a close-packed 7-layer Ni (111) slab and (ii) a p (1 x 1) Ni monolayer on Cu (111) are presented. For Ni ( I l l ) , we find an enhancement of the magnetic moment for both the surface (to 0.63 pB) and sub-surface Ni layers (from a center layer value of 0.58 pB). In contrast, a slight decrease of the magnetic hyp...

The formation of discrete complexes [M(mcoe)2S2] (M = Cu, Ni; S = MeOH, H2O) vs. a nitroso-bridged ferromagnetically-coupled Cu(II) coordination polymer [Cu(mcoe)2] is influenced by the use of solvothermal reaction conditions.

With a focus on catalysts prepared by an excess-chloride wet impregnation procedure and supported the zeolite ZSM-5(30), introduction of low concentrations tertiary base metals, in particular Cu, into AuPd nanoparticles can be observed to enhance catalytic activity towards direct synthesis H2O2. Indeed optimal catalyst formulation (1%AuPd(0.975)Cu(0.025)/ZSM-5) is able achieve rates H2O2 (115 m...

Alloy Pt-M (M = Co, Ni) nanocatalysts, supported on carbon Vulcan XC-72, were synthesized using the carbonyl chemical route. A high dispersion on such substrate was revealed by transmission electron microscopy (TEM). Alloy formation on the nanometre scale length was shown by high-resolution transmission microscopy (HRTEM) and energy dispersive X-ray spectroscopy (EDX) on a nanoparticle. The met...

Scanning tunneling microscopy studies of Cu islands grown on TiO2(110) demonstrate that these islands disappear from the STM images after exposure to oxygen gas (60-2000 Langmuir). Based on X-ray photoelectron spectroscopy experiments, the disappearance of the Cu islands cannot be explained by the loss of Cu from the surface or by a dramatic change in the electronic properties of the islands. T...

The low performance or high cost of commercially available conductive inks limits the advancement of printed electronics. This article studies the explosion of metal wires in aqueous solutions as a simple, low-cost, and environmentally friendly method to prepare metallic nanoparticles consisting of Cu and Cu alloys for use in affordable, highly conductive inks. Addition of 0.2 M ascorbic acid t...