Results 71 to 80 of about 12,064 (254)

Effect of Austempering Time and Temperature on the Mechanical and Microstructural Properties of a Niobium-Alloyed Austempered Ductile Iron

open access: yesMetals
This study evaluated the influence of niobium addition and austempering time and temperature on the microstructure and mechanical behavior of ductile iron.
César Yeshua Becerra Mayorga   +6 more
doaj   +1 more source

Oxidation assisted intergranular cracking in 718 Nickel Superalloy: on the mechanism of dynamic embrittlement

open access: yesJournal of Materials Research and Technology, 2018
Nickel Superalloy 718 was specially designed for high temperatures. However, due to an embrittlement phenomenon, its application is limited up to 650 °C.
Amanda de Vasconcelos Varela   +4 more
doaj   +1 more source

Metal Carbide-graphite Composites Quarterly Report, Aug. 1 - Oct. 31, 1966 [PDF]

open access: yes
Physical and mechanical properties of tantalum carbide and niobium carbide ...
Harada, Y.
core   +1 more source

Enhancing the d–Electrocatalytic Activity of MXene Through Defect Engineering

open access: yesCarbon Energy, EarlyView.
Applications of MXene. ABSTRACT Due to their versatile and tunable surface and bulk chemistry, MXenes have great potential as electrocatalysts for batteries and supercapacitors. When compared with other electrocatalytic processes, in electrocatalytic reactions, MXenes could improve ion diffusion and charge transfer by either providing functional groups
Chenxue Wang   +4 more
wiley   +1 more source

Effect of Carbon Stabilizing Elements on WC Cemented Carbides with Chromium Steel Binder

open access: yesMedžiagotyra, 2019
High price, limited availability and toxicity of cobalt motivates researchers and material engineers to find alternative binder systems for WC cemented carbides. Iron and iron alloys are promising candidates for complete cobalt substitution.
Marek TARRASTE   +4 more
doaj   +1 more source

Functionalizing Conductive Diamond: Recent Advance in Fabrication, Modifications, and Applications

open access: yesCarbon Energy, EarlyView.
This review highlights recent advancements in the synthesis, modification, and electrochemical applications of conductive diamond, particularly boron‐doped diamond (BDD). It emphasizes progress in fabrication methods, including CVD and HPHT, and explores modifications such as doping, surface terminations, and composite design, enabling significant ...
Ning Linghu, Xin Jiang, Jing Xu
wiley   +1 more source

The role of the coherence length for the establishment of global phase coherence in three-dimensional arrays of ultra-thin quasi-one-dimensional superconducting Pb and NbN nanowires

open access: yes, 2017
We have fabricated 5 nm ultra-thin NbN nanowires that form a dense and regular array in the linear channels of mesoporous SBA-15 silica substrates. Bulk NbN is a well-known classical superconductor with Tc of 16 K.
He, Minquan   +5 more
core   +2 more sources

Onset of carbon-carbon bonding in the Nb5Cy (y = 0-6) clusters: a threshold photo-ionisation and density functional theory study [PDF]

open access: yes, 2008
We have used photo-ionisation efficiency spectroscopy to determine the ionisation potentials (IPs) of the niobium–carbide clusters, Nb5Cy (y = 0–6). Of these clusters Nb5C2 and Nb5C3 exhibit the lowest IPs.
Buntine, Mark A   +3 more
core   +2 more sources

Structural Design of MOF‐Based and MOF‐Derived Composites for Oxygen Evolution Electrocatalysis: Materials Innovation for Energy and Environmental Sustainability

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This review provides an overview of recent developments in metal organic framework (MOF)‐based and MOF‐derived composites for efficient oxygen evolution reaction. This review also emphasizes the structural design of electrocatalyst, active site optimization, and emerging prospects of their use in practical electrolyzer systems.
Bhagyashri B. Kamble   +7 more
wiley   +1 more source

Kinetics of vanadium carbonitride precipitation in steel: A computer model [PDF]

open access: yes, 2005
We have constructed a computer model of the precipitation kinetics of vanadium carbonitride in steel that takes into account the composition evolution of the precipitates with time.
Gouné, Mohamed, Maugis, Philippe
core   +1 more source

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