Nickel-based alloy metal matrix composite (NAMMC) is a new type of material which expected to replace traditional Nickel-base superalloy used in the manufacture important hot-end components aerospace, naval ships and industrial gas turbine engines due its excellent high temperature strength, superior thermal fatigue resistance, oxidation resistance corrosion resistance. However, these outstandi...

Abstract The influence of keyhole TIG (K-TIG) welding parameters on the weld geometry and defects a new nickel-based superalloy VDM Alloy 780 alloy were investigated using statistical design experiment, microstructures heat-affected zone (HAZ) fusion (FZ) K-TIG-welded characterized. No cracks are found in FZ HAZ. Travel speed significantly influences minimum width (Wm), face root excess metal, ...

Abstract This body of work aims to inform alloy design for additive manufacturing by investigating the early-stage oxidation behavior Ni-based superalloys processed laser-powder bed fusion. The 14 superalloys—some novel and some heritage—at 1000 °C 24 hours is studied through thermo-gravimetric analysis. mass gain, oxide layer thickness, scale composition, $$\gamma ^\prime $$ <mml:math xmlns:mm...

Black phosphorus (BP) is a new class of 2D material which holds promise for next generation transistor applications owing to its intrinsically superior carrier mobility properties. Among other issues, achieving good ohmic contacts with low source-drain parasitic resistance in BP field-effect transistors (FET) remains a challenge. For the first time, we report a new contact technology that emplo...

Special potential scan programs were designed for cyclic voltammetric development of β-NiOOH or γ-NiOOH/ β-NiOOH mixtures on the surface of nickel or nickel-chromium (80:20) alloy electrodes in NaOH 0.10 M. The programs consisted on changing the anodic or cathodic switching limit to facilitate the chemical reactions taking place either between Ni(II) hydroxides or between Ni(III) oxides-hydroxi...