Order and disorder in carbides and nitrides
WebUsing a neutron diffraction structure analysis method it is found that an order-disorder phase transition of the first kind occurs in a nonstoichiometric niobium carbide NbCy at a temperature of ≈ 1300 K in the composition range NbC0,81-NbC0,88. The phase transition channel which incorporates five nonequivalent superstructural vectors belonging to three …
Order and disorder in carbides and nitrides
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WebC. H. de Novion, V. Maurice: Order and disorder in carbides and nitrides, J. Physique Colloq. (France) 38, C7–211— C7–220 (1977) Google Scholar V. Moisy-Maurice, C. H. de Novion, A. N. Christensen, W. Just: Elastic diffuse neutron scattering study of the defect structure of TiC0.76 and NbC073, Solid State Commun. 39, 661–665 (1981) WebJun 10, 2016 · Gusev, A.I. Order-disorder transformations and phase equilibria in strongly nonstoichiometric compounds. Phys. Uspekhi 2000, 43, 1–37. [Google Scholar] Gusev, A.I.; Rempel, A.A. Phase diagrams of Metal-Carbon and Metal-Nitrogen systems and ordering in strongly nonstoichiometric carbides and nitrides. Phys. Status Solidi A 2001, 163, 273–304
WebAug 13, 2001 · Although dealing primarily with transition metal carbides, nitrides and oxides, the methods and models presented are applicable to … WebFeb 20, 2024 · Special Issue Information. This Special Issue publishes original research articles, review articles, and short communications on the application possibilities and the latest developments in 2D metal carbides and nitrides (MXenes). MXenes, owing to their chemical composition, structure, and unique properties, offer great application possibilities.
Webchemical and topological disorder contributions, and to obtain effective interatomic ordering pair energies in qualitative agreement with those calculated "ab initio". Preliminary f.c.c. coherent phase diagrams have been calculated from these pair interactions. 1. Introduction Transition metal carbides and nitrides MC In physics, the terms “order” and “disorder” indicate the presence or absence of symmetry in a multi-particle system. In condensed matter physics, systems are typically ordered at low temperatures. However, when heated, they undergo one or more phase transitions into less ordered states.
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Weborder disorder carbide nitride structure naci metallic transition metal courte distance plut8t qu nitrures mctalliques preferred coordination shell carbone dans general experimental … chinese behind the nameWebBecause the group NA transition metal carbides, nitrides, and borides may pos- sibly be used as high-temperature materials, their physical properties have been given ... pact form, whenever feasible, in order to facilitate handling and to maintain a more con- sistent surface area. However, because of the ease of hydrolysis of CaC2 and Ca3N2, chinese beijing universityWebAug 13, 2001 · This book embraces the entire range of problems associated with nonstoichiometry, disorder and order in solids. Although dealing … grand cherokee srt for sale near meWebOrder & Disorder: With Jim Al-Khalili, Annabel Troost, Sean Carroll, Irving Finkel. Professor Jim Al-Khalili unwraps the evolutionary histories responsible for the modern human condition, as currently represented by … chinese belfast deliveryWebThe solubility of nitrides and carbides in the liquid phase, austenite and ferrite has been evaluated. ... In order to gain an understanding of the precipitation mechanisms and the transformation of austenite to ferrite during cooling under the different thermo-mechanical histories associated with the caster, a hot ductility programme was ... grand cherokee srt for sale houston txWebnitride, any of a class of chemical compounds in which nitrogen is combined with an element of similar or lower electronegativity, such as boron, silicon, and most metals. Nitrides contain the nitride ion (N3−), and, similar to carbides, nitrides can be classified into three general categories: ionic, interstitial, and covalent. Certain metal nitrides are … chinese beldonWebOct 18, 2007 · Data on order–disorder phase transformations in strongly nonstoichiometric carbides and nitrides MXy (X=C, N) of Group IV and V transition metals at temperatures … chinese beijingbased theblock