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Carbide

About: Carbide is a research topic. Over the lifetime, 36331 publications have been published within this topic receiving 503586 citations.


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01 Feb 1994
TL;DR: Theoretical methods used to calculate the electronic structure and properties of refractory compounds have been described in this paper, including electronic structure, chemical bonding, and properties for binary carbides and nonstoichiometric carbides.
Abstract: 1. Theoretical methods used to calculate the electronic structure and properties of refractory compounds 2. Electronic structure, chemical bonding and properties of binary carbides 3. Electronic structure and interatomic interactions in transition-metal nitrides 4. Electronic structure and properties of nonstoichiometric carbides and nitrides 5. S-, P-element impurities in carbides, nitrides, and their solid solutions 6. Hydrogen-containing carbides and nitrides and their solid solutions 7. Influence of metal sublattice doping on electronic properties of carbides and nitrides 8. Electronic structure of carbides and nitrides surface.

172 citations

Journal ArticleDOI
TL;DR: In this article, a carbonaceous deposit containing nano-particles (nm-size particles) consisting of graphite shells around core nano-crystals averaging 10-30 nm in diameter but sometimes 3-4 nm Transmission electron microscopy, nm-size electron diffraction and electron energy-loss spectroscopy have revealed that the nanocrystals are La-carbide, LaC2, and that no intermediate layers are formed.
Abstract: Arc discharging carbon rods containing 88 wt% La2O3 produces a carbonaceous deposit containing nano-particles (nm-size particles) consisting of graphite shells around core nano-crystals averaging 10-30 nm in diameter but sometimes 3-4 nm Transmission electron microscopy, nm-size electron diffraction and electron energy-loss spectroscopy have revealed that the nano-crystals are La-carbide, LaC2, that the interfaces between the carbide and the graphite are flat, and that no intermediate layers are formed

172 citations

Journal ArticleDOI
TL;DR: A non-noble bimetallic catalyst based on nickel-tungsten carbide is proposed for the conversion of the platform molecules 5-(hydroxymethyl)furfural into the liquid-fuel molecule 2,5-dimethylfuran (DMF).
Abstract: The development of new catalytic systems for the conversion of biomass-derived molecules into liquid fuels has attracted much attention. We propose a non-noble bimetallic catalyst based on nickel-tungsten carbide for the conversion of the platform molecules 5-(hydroxymethyl)furfural into the liquid-fuel molecule 2,5-dimethylfuran (DMF). Different catalysts, metal ratios and reaction conditions have been tested and give rise to a 96% yield of DMF. The catalysts have been characterized and are discussed. The reaction mechanism is also explored through capture of reaction intermediates. The analysis of the reaction mixture over different catalysts is presented and helps to understand the role of nickel and tungsten carbide during the reaction.

171 citations

Journal ArticleDOI
TL;DR: In this paper, the authors demonstrate for the first time that the load dependence of the contact area in UHV for this extremely hard single asperity contact is described by the Derjaguin-M{umlt uller-Toporov continuum mechanics model.
Abstract: A comprehensive nanotribological study of a hydrogen-terminated diamond(111)/tungsten carbide interface has been performed using ultrahigh vacuum atomic force microscopy. Both contact conductance, which is proportional to contact area, and friction have been measured as a function of applied load. We demonstrate for the first time that the load dependence of the contact area in UHV for this extremely hard single asperity contact is described by the Derjaguin-M{umlt u}ller-Toporov continuum mechanics model. Furthermore, the frictional force is found to be directly proportional to the contact area. {copyright} {ital 1998} {ital The American Physical Society}

170 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20231,218
20222,462
2021994
20201,277
20191,413
20181,471