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ChemInform Abstract: Synthesis of Niobium Carbide from Niobium Oxide Aerogels.
ChemInform, 1995AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
V. L. S. TEIXEIRA DA SILVA +3 more
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Materials Characterization, 2021
In this work, a highly wear-resistant cooper matrix composite reinforced by in situ formed nano-NbC particles was synthesized by hot pressing mechanically alloyed Cu+Nb+C powders. The composite possesses a smaller friction coefficient and displays a wear
Y. Bian +11 more
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In this work, a highly wear-resistant cooper matrix composite reinforced by in situ formed nano-NbC particles was synthesized by hot pressing mechanically alloyed Cu+Nb+C powders. The composite possesses a smaller friction coefficient and displays a wear
Y. Bian +11 more
semanticscholar +1 more source
Sintering of alumina-niobium carbide composite
International Journal of Refractory Metals and Hard Materials, 1998Abstract Several studies have been focused on particulate-dispersed Al 2 O 3 composites in order to improve both room and high temperature mechanical properties and wear resistance. In the present work Al 2 O 3 -NbC composites have been pressureless sintered and their microstructures analysed as a function of NbC and Y 2 O 3 concentration, the ...
Rosa M.R. Pasotti +2 more
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Recrystallization of niobium and zirconium carbides
Soviet Powder Metallurgy and Metal Ceramics, 1977The temperature level at the beginning of recrystallization of transition metal carbides depends on the degree of their homogeneity, their reaction with oxygen in the course of deformation and annealing, and the stability of the resultant oxide phases.
A. E. Kravchik +3 more
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Lattice dynamics of niobium carbide (NbC)
Solid State Communications, 1984Abstract A consistent and comprehensive approach has been adopted to derive the framework of a deformation dipole model (DDM) which is capable of explaining successfully the lattice dynamics of ionic crystals. The application of this model to the case of the niobium carbide crystal has reproduced fairly well the phonon dispersion curves.
R.B. Yadav, K.C. Thakur
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Hot isostatic pressing of niobium carbide
Materials Science and Engineering, 1982The mechanical properties of the transition metal carbides have made them technologically significant for many years. Among the studies on fabrication procedures only a miner percentage has been involved with sintering in the absence of sizable amounts of liquid place.
S. Chevacharoenkul +2 more
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Gap Energy of Superconducting Niobium Carbide
Physical Review B, 1971The first estimate of the superconducting energy gap in a transition-metal carbide was recently made from thermal conductivity data on Nb${\mathrm{C}}_{0.96}$ The quantity $\frac{2\ensuremath{\epsilon}(0)}{k{T}_{c}}$ was treated as an adjustable parameter in fitting the data to Bardeen-Rickayzen-Tewordt (BRT) theory, and a good fit was found for $2 ...
L. W. Shacklette +2 more
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Densification of nonstoichiometric niobium-carbide phases
Soviet Powder Metallurgy and Metal Ceramics, 19681. A study was made of the influence of temperature on the density of compacts produced from powders of nonstoichiometric NbCX phases of approximately the same specific surface area. It was established that, with increasing carbon deficiency, the relative density at any given temperature increases, because the diffusional mobility of the carbon and ...
S. S. Ordan'yan +2 more
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Niobium Carbide Precipitation in Microalloyed Steel
steel research international, 2004The precipitation of niobium carbo‐nitrides in the austenite phase, interphase and ferrite phase of microalloyed steel was assessed by a critical literature review and a round table discussion. This work analyses the contribution of niobium carbide precipitates formed in ferrite in the precipitation hardening of commercially hot rolled strip ...
Christian Klinkenberg +2 more
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Thermal expansion of some niobium carbides
Journal of the Less Common Metals, 1967Abstract The thermal expansions of the cubic compounds NbC0.924, NbC0.825, NbC0.766, and NbC0.702 were determined between 25 ...
C.P. Kempter, E.K. Storms
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