Topic
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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TL;DR: In this article, the solidification pathway, C-solubility and phase evolution of C-containing TiAl alloys are investigated, and the creep behavior of a refined Ti-43.5Al-4Nb-1Mo-0.5
130 citations
TL;DR: Early transition metal carbides (TMCs) can be used as supports for platinum-group metals as low-cost electrocatalysts as mentioned in this paper, and the determination of electrochemical stability of TMCs is important to identify their potential use in electrochemical and photoelectrochemical applications.
Abstract: Early transition metal carbides (TMCs) can be used as supports for platinum-group metals as low-cost electrocatalysts. The determination of electrochemical stability of TMCs is important to identify their potential use in electrochemical and photoelectrochemical applications. Various TMC thin films were synthesized and characterized with X-ray diffraction and photoelectron spectroscopy. Chronopotentiometric-titration measurements were used to map the stability regions of the TMC thin films over a wide pH range. The stability of the TMC thin films was correlated to the oxygen binding energy of the parent metal. All of the TMCs studied are stable for hydrogen evolution/oxidation; most are stable for alcohol oxidation, and titanium, tantalum, and zirconium carbides are stable for oxygen evolution/reduction reactions.
130 citations
TL;DR: In this article, the results of experimental and theoretical investigations of phase equilibria in the W-C system and of the crystal and electronic structures of tungsten carbides are generalised.
Abstract: The results of experimental and theoretical investigations of phase equilibria in the W–C system and of the crystal and electronic structures of tungsten carbides are generalised. The phase diagram of the W–C system supplemented by new compounds is considered. The sequence of phase transformations associated with ordering of lower hexagonal carbide β-W2C is analysed. The region of existence of cubic carbide γ-WC1–x is discussed in detail. The generalised information on the phase equilibria in the ternary system W–Co–C, which forms the basis for the synthesis of hard alloys WC–Co, is given. Methods of synthesis of tungsten carbides and hard alloys based on them are considered. Modern methods for the synthesis of nanostructured hard alloys are discussed in detail as well as their structures and properties.
130 citations
TL;DR: In this paper, the structure of filamentous carbon formed upon catalytic decomposition of hydrocarbons on iron subgroup metals and their alloys is considered and the regularities of the deposition of carbon on these metals are generalised.
Abstract: The structure of filamentous carbon formed upon catalytic decomposition of hydrocarbons on iron subgroup metals and their alloys is considered. The regularities of the deposition of carbon on these metals are generalised. The carbide cycle mechanism of carbon formation is considered in detail. The growth models of some morphological modifications of filamentous carbon are discussed. The bibliography includes 151 references.
130 citations
TL;DR: Depending on the category, 2D-PC structures that can be metallic, semimetallic with an anisotropic Dirac cone, or direct-gap semiconductors with their gap tunable by in-layer strain are identified.
Abstract: We propose previously unknown allotropes of phosphorus carbide (PC) in the stable shape of an atomically thin layer. Different stable geometries, which result from the competition between sp2 bonding found in graphitic C and sp3 bonding found in black P, may be mapped onto 2D tiling patterns that simplify categorizing of the structures. Depending on the category, we identify 2D-PC structures that can be metallic, semimetallic with an anisotropic Dirac cone, or direct-gap semiconductors with their gap tunable by in-layer strain.
130 citations