PbTe is an extremely important thermoelectric (TE) material, due to its high TE conversion efficiency. Consequently, our effort focuses on developing PbTebased TE modules, which requires developing novel approaches for bonding metallic contacts to PbTe. In this study, Fe, Mo, and NiFeMo alloy foils were directly bonded to n-type PbTe using a rapid hot press at 600, 700, or 800 C under a pressur...

Fe–30Mn–10.5Al–1.1C alloys with different Mo and Ni contents are prepared to investigate the phase transformation behavior mechanical properties of austenitic lightweight steels. Solution-treated samples have microstructures consisting an austenite matrix ordered κ-carbides, size κ-carbides decreases addition or Ni. In addition, body-centered cubic (BCC) phases B2 DO3 also form when 3wt%Mo 3wt%...

Single crystalline cobalt nickel (Co-Ni) alloy nanowires are successfully fabricated using direct current (DC) electrodeposition with in the nanopore of highly ordered anodized aluminum oxide (AAO) template. SEM studies show that the average diameter of the alloy nanowires is approximately equal to 50 nm which corresponds to the pore size of the AAO template. Energy-dispersive X-ray (EDX) analy...

The kinetics of passive oxide film formation, its thickening, and composition on Ni-22Cr Ni-22Cr-6Mo wt% alloys were investigated at selected anodic potentials. Experiments performed in acidic alkaline sulfate environments using a number characterization techniques including combination potentiodynamic polarization, on-line atomic emission spectro-electrochemistry (AESEC), situ potentiostatic g...

This work investigates the charge transfer and A1 (Ga) p-Ni d hybridization effects in the intermetallic Ni3Al (Ni3Ga) alloy using the Ni L3~and K-edge and Al (Ga) K x-ray absorption near edge structure (XANES) measurements. We find that the intensity of white-line features at the Ni L3~-edge in the Ni3Al (Ni3Ga) alloy decreased in comparison with that of pure Ni, which can be attributed to the...

Electrodeposition of Ni-Co alloy foils on titanium substrate was performed in an acid chloride-sulphate bath. The influences of electrodeposition parameters such as current density, temperature, pH value, cobalt sulphate and saccharin concentration on composition and current efficiency were investigated in detail. The morphology and the microstructure of deposits were analyzed by SEM and XRD, r...

ÐWe analyse the development of shear bands in axisymmetric, thermomechanical deformations of a circular tungsten heavy alloy (WHA) rod impacting at normal incidence a smooth rigid target. The rod's material is modeled either as a mixture of Fe±Ni±W particles interspread randomly among the W-particles or as a homogeneous alloy. For comparison purposes we also analyse deformations of a pure W and...

Using density functional theory (B3LYP functional) we systematically studied Pt/Ni alloy clusters (6 44 atoms) and found that the Pt/Ni(1 1 1) alloy surface prefers the bulk structure (Pt3Ni crystal), without showing surface segregation. This leads to an ordered surface with each Ni surrounded by 6 Pt atoms. We then examined the oxygen chemisorption at all surface sites and found strongest bind...

Bismuth–lithium alloys are considered primary candidates for the reductive extraction step in on-line reprocessing of molten salt reactor fuel. The corrosion behavior molybdenum-based and Hastelloy® B-3 alloy (taken comparison) was examined here a liquid Bi–Li (5 mol.%) at 650 °C. MoW10, MoW30, TZM corrosion-resistant were studied as prospective construction materials holding bismuth–lithium al...