Results 51 to 60 of about 12,064 (254)
Non‐Equilibrium Synthesis Methods to Create Metastable and High‐Entropy Nanomaterials
Advanced Science, EarlyView.ABSTRACT Stabilizing multiple elements within a single phase enables the creation of advanced materials with exceptional properties arising from their complex composition. However, under equilibrium conditions, the Hume–Rothery rules impose strict limitations on solid‐state miscibility, restricting combinations of elements with mismatched crystal ...
Shuo Liu +3 more
wiley +1 more source
Near-Infrared Spatial Self-Phase Modulation in Ultrathin Niobium Carbide Nanosheets
Frontiers in Physics, 2021 Spatial self-phase modulation (SSPM) as a purely coherent non-linear optical effect (also known as Kerr effect) can support strong broadband phase modulation, which is essential for all-optical applications.
Si Xiao +7 more
doaj +1 more source
Ceramic material suitable for repair of a space vehicle component in a microgravity and vacuum environment, method of making same, and method of repairing a space vehicle component [PDF]
, 2009 A precursor of a ceramic adhesive suitable for use in a vacuum, thermal, and microgravity environment. The precursor of the ceramic adhesive includes a silicon-based, preceramic polymer and at least one ceramic powder selected from the group consisting ...
Easler, Timothy E., Riedell, James A.
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On the Vacuum Reduction of Niobium Pentoxide with Niobium Carbide
Journal of the Japan Institute of Metals, 1962 Using the vacuum process, carbide reduction of niobium pentoxide due to the following reaction was investigated experimentally: Nb/sub 2/O/sub 5/ + 5 NbC = 7 Nb + 5 CO. The mixing ratio of Nb/sub 2/O/sub 5//NbC was varied from 33/67 to 45/55. By means of fluctuation measurements of pressure and temt the reaction began to proceed rapidly above 1700 un ...
Hirozô Kimura, Yasuo Sasaki
openaire +2 more sources
Lattice Carbon‐Mediated Ultralow‐Barrier C–C Coupling for Selective CO Electroreduction to Ethylene
Advanced Science, EarlyView.Combined DFT and molecular dynamics simulations reveal that while the lattice carbon at the MXene edge cannot directly bind CO2 to form ethylene, it acts as an active center to promote C─C coupling between adjacent *CO intermediates for ethylene production.
Jiangke Tao +5 more
wiley +1 more source
Friction characteristics of graphite and graphite-metal combinations at various temperatures [PDF]
, 1970 Characteristics of the coefficient of friction of graphite and of graphitic combinations between 70 and 4000 degrees F are given. Graphite's good frictional quality is attributed to a gas film on surface platelets. Major factors investigated are, surface
Manjoine, M. J.
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Advanced Science, EarlyView.A Janus‐like bio‐inspired strategy is proposed for integrally 3D‐printed bimetallic metamaterials. Inspired by shell bilayers, a heat‐resistant AlSiFeMnNiMg alloy and a SiC‐reinforced AlSi10Mg with different SiC volume fractions are arranged as an architected pair.
Zhicheng Dong +5 more
wiley +1 more source
Environmental Stability and Electronic Properties of Individual Flakes of Ti2CTx MXene
Advanced Electronic Materials, EarlyView.The paper presents a synthesis of large Ti2CTx MXene flakes with sizes reaching 40 µm and examines their environmental stability and electronic behavior. It demonstrates that monolayer flakes degrade rapidly in ambient conditions, leading to semiconducting‐like behavior with low conductivity and mobility. In contrast, multilayer flakes exhibit enhanced
Md. Ibrahim Kholil +5 more
wiley +1 more source
Open Ceramics, 2021 The sintering of a 14 wt% nickel nano-dot coated NbC powder was investigated using dilatometry in combination with XRD, ToF-ERDA, PIXE, SEM-EDS/EBSD/TKD, and TEM-HAADF/EDS/EELS for analysis of samples heated to 1375, 1405 and 1500 °C, with a 30 min ...
Sarmad Naim Katea +5 more
doaj +1 more source
Influence of interstitials content on the diffusion of Niobium in alloy 718 [PDF]
, 2009 Many studies have emphasized the beneficial effect of niobium on the physical metallurgy of Ni-Cr-Fe alloy 718. Among the different strengthening actions of niobium, such as solid solution hardening and carbide precipitation, the precipitation of niobium
Andrieu, Eric +4 more
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