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Journal articles on the topic 'Carbide system'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Gezerman, Ahmet Ozan, and Burcu Didem Çorbacıoğlu. "Effects of Mechanical Alloying on Sintering Behavior of Tungsten Carbide-Cobalt Hard Metal System." Advances in Materials Science and Engineering 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/8175034.

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During the last few years, efforts have been made to improve the properties of tungsten carbides (WCs) by preparing composite materials. In this study, we prepared WC particles by mechanical alloying and investigated the effects of mechanical alloying conditions, such as mechanical alloying time and mechanically alloyed powder ratio, on the properties of 94WC-6Co. According to experimental studies, increasing the mechanical alloying time causes an increase in the density of tungsten carbide samples and a decrease of crystal sizes and inner strength of the prepared materials. With the increase

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2

Movchan, O. V., and K. O. Chornoivanenko. "Regularities of phase and structural transformation in the Fe-Cr-Ti-C system during carburization." Fundamental and applied problems of ferrous metallurgy, no. 38 (2024): 632–43. https://doi.org/10.52150/2522-9117-2024-38-632-643.

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Diffusion carburization of ferrite alloyed with carbide-forming stabilizing ferrite components under certain conditions leads to the cooperative disintegration of ferrite into austenite and special carbide with the formation of eutectoid-like plate-rod colonies. Studying the conditions for the formation of austenite-carbide colonies shows that the driving force behind the growth of colonies is the influx of carbon. At the same time, it is necessary that carburization of ferrite simultaneously leads to austenitization and carbide formation. The analysis of the diagrams of the composition of the

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Rivero, H. D., José A. García, E. Cándido Atlatenco, Alejandro D. Basso, and J. Sicora. "Effect of the ratio Mo/Cr in the precipitation and distribution of carbides in alloyed nodular iron." MRS Proceedings 1485 (2012): 113–18. http://dx.doi.org/10.1557/opl.2013.278.

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ABSTRACTThis investigation deals with the effect of 2/0, 1/1 and 1/0.5 Cr/Mo ratios on the local fraction, distribution and the comparative size of carbides precipitated in cast nodular iron. “Y” block castings with a thickness of 1.5 cm are cast in green sand molds. Two samples are cut from each casting, one located on the center and another on the wall. The carbide volume fraction is evaluated by a digital analysis system. Each sample is analyzed in three zones: bottom, middle and top. Carbide mappings are generated according to the average local carbide fraction in order to get the distribu

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Weinberger, Christopher R., and Gregory B. Thompson. "The crystal structure and phase stability of the zeta phase in the group VB transition metal carbides: a computational investigation." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 75, no. 5 (2019): 870–79. http://dx.doi.org/10.1107/s2052520619011302.

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The crystal structure and composition of the zeta phase in the group VB transition metal carbides are not completely understood despite decades of experimental studies. As such, the phase rarely appears on phase diagrams of the group VB transition metal carbides. There is currently renewed interest in this phase, as tantalum carbide composites exhibit high fracture toughness in the presence of this phase. This work extends the initial computational study using density functional theory of the phase stability of the zeta phase in the tantalum carbide system, where the tantalum carbide zeta-phas

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Gromilov, Sergey, Anatoly Chepurov, Valeri Sonin, et al. "Formation of two crystal modifications of Fe7C3−x at 5.5 GPa." Journal of Applied Crystallography 52, no. 6 (2019): 1378–84. http://dx.doi.org/10.1107/s1600576719013347.

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The Fe–C system, which is widely used to grow commercial high-pressure–high-temperature diamond monocrystals, is rather complicated due to the formation of carbides. The carbide Fe3C is a normal run product, but the pressure at which Fe7C3 carbide becomes stable is a subject of discussion. This paper demonstrates the synthesis of Fe7C3 carbide and its detailed study using single-crystal and powder X-ray diffraction, as well as electron probe micro-analysis and scanning electron microscopy. The experiments were performed using a multiple-anvil high-pressure apparatus of `split-sphere' (BARS) ty

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Ol'shanetskii, Vadim, and Olexander Glotka. "Predicting the composition of primary carbides of the multicomponent system Ni-5Cr-9Co-6Al-8.3W-4Re-4Ta-1Mo-1.5Nb-0.15C." Bulletin of Kharkov National Automobile and Highway University 2, no. 92 (2021): 109. http://dx.doi.org/10.30977/bul.2219-5548.2021.92.2.109.

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Abstract. Problem. Development of new and optimization of existing casting alloys for the manufacture of blades of gas turbine engines for various purposes is an important scientific and technical problem. Given the sensitivity of the structural components to the concentration of alloying elements, there are difficulties in assessing the expected set of properties of the blades from the optimization of the chemical composition or structural state of alloys. Goal. The aim of this work is to study the specifics of the influence of alloying elements on the distribution of primary carbides in the

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7

Powell, Graham L. F., Ian H. Brown, and Grant D. Nelson. "Tough Hypereutectic High Chromium White Iron – A Double In Situ Fibrous Composite." Advanced Materials Research 32 (February 2008): 111–14. http://dx.doi.org/10.4028/www.scientific.net/amr.32.111.

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A tough hypereutectic high chromium white iron has been developed by considering the alloy as a double in-situ fibrous composite and applying the principles of composite theory. The eutectic in the ternary Fe-Cr-C system solidifies as M7C3 carbide rods of irregular hexagonal cross section in a matrix of austenite. The carbide rods are intermittently joined together with no misorientation at the joint. The colonies (eutectic grains) of a 27%Cr alloy solidify with a flat solid – liquid interface. In hypereutectic high chromium white irons the primary carbide solidifies as single crystal rods wit

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8

Gubernat, Agnieszka. "Description of Carbides Sintering Process Using Kuczynski and Frenkel Sintering Models." Advances in Science and Technology 62 (October 2010): 209–14. http://dx.doi.org/10.4028/www.scientific.net/ast.62.209.

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This work presents measurements concerning sintering description according to two the: Kuczynski and Frenkel models. Investigation covered selected metal–like carbides: TiC0,8, NbC and WC. Kinetic equations were also developed, according to Kuczynski model to describe sintering of each carbide and it was attempted to determine mechanisms of mass transport mechanism dominating at each sintering stage. Parameters describing sintering process of each of investigated carbides: α and β constants, the initial shrinkage rate α-1, the limit of shrinkage at infinite time β-1 and initial apparent viscos

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9

Glotka, O. "Prediction carbides composition in nickel-based superalloys directional crystallization." Innovative Materials and Technologies in Metallurgy and Mechanical Engineering, no. 2 (March 18, 2021): 13–21. http://dx.doi.org/10.15588/1607-6885-2020-2-2.

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Objective. To study the specifics of the distribution of alloying elements in the carbides of the multicomponent system Ni-5Cr-9Co-6Al-1Ti-11.7W-1.1Mo-1.6Nb-0.15C by directional crystallization, using the calculated method of CALPHAD prediction. Research methods. To find regularities and calculate the distribution of alloying elements in the alloy, the latest CALPHAD method was chosen, and modeling of thermodynamic processes of phase crystallization was performed. The obtained results. The results of thermodynamic calculations of the chemical composition of carbides are given in the form of ma

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10

Hadi, Aseel, Ahmed Hashim Ah-yasari, and Dalal Hassan. "Fabrication of new ceramics nanocomposites for solar energy storage and release." Bulletin of Electrical Engineering and Informatics 9, no. 1 (2020): 83–86. http://dx.doi.org/10.11591/eei.v9i1.1323.

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The carbides nanostructures have huge applications in renewable energy fields such as the saving of solar energy and release which attributed to the good their properties (thermal, electrical, mechanical, optical and chemical). So, in this paper, the solar energy storage and release of carbides nanoparticles/water for building heating and cooling applications have been investigated with different concentrations of metals carbides nanoparticles (tantalum carbide-silicon carbide). The results showed that the melting and solidification times for thermal energy storage and release decrease with an

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Aseel, Hadi, Hashim Ahmed, and Hassan Dalal. "Fabrication of new ceramics nanocomposites for solar energy storage and release." Bulletin of Electrical Engineering and Informatics 9, no. 1 (2020): 83–86. https://doi.org/10.11591/eei.v9i1.1323.

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The carbides nanostructures have huge applications in renewable energy fields such as the saving of solar energy and release which attributed to the good their properties (thermal, electrical, mechanical, optical and chemical). So, in this paper, the solar energy storage and release of carbides nanoparticles/water for building heating and cooling applications have been investigated with different concentrations of metals carbides nanoparticles (tantalum carbide-silicon carbide). The results showed that the melting and solidification times for thermal energy storage and release decrease with an

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12

Maruyama, Benji, and Fumio S. Ohuchi. "H2O catalysis of aluminum carbide formation in the aluminum-silicon carbide system." Journal of Materials Research 6, no. 6 (1991): 1131–34. http://dx.doi.org/10.1557/jmr.1991.1131.

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Aluminum carbide was found to form catalytically at aluminum-silicon carbide interfaces upon exposure to water vapor. Samples, composed of approximately 2 nm thick layers of Al on SiC, were fabricated and reacted in vacuo, and analyzed using XPS. Enhanced carbide formation was detected in samples exposed to 500 Langmuirs H2O and subsequently reacted for 600 s at 873 K. The cause of the catalysis phenomenon is hypothesized to be the weakening of silicon-carbon bonds caused by very strong bonding of oxygen atoms to the silicon carbide surface. Aluminum carbide formation is of interest because of

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Kiviö, Miia, Lauri Holappa, Takeshi Yoshikawa, and Toshihiro Tanaka. "Interfacial Phenomena in Fe/Stainless Steel–TiC Systems and the Effect of Mo." High Temperature Materials and Processes 33, no. 6 (2014): 571–84. http://dx.doi.org/10.1515/htmp-2013-0082.

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AbstractTitanium carbide is used as reinforcement particles in composites due to its hardness, wear resistance and stability. This work is a part of the study in which titanium carbides are formed in stainless steel castings in the mold to improve the wear resistance of a certain surface of the casting. Such local reinforcement is a very potential method but it is a quite demanding task requiring profound knowledge of interfacial phenomena in the system, wettability, stability, dissolution and precipitation of new phases in production of these materials. Good wetting between different constitu

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14

Apata, O. A., T. N. Muobeleni, A. A. Fabuyide, et al. "Development of VC-Ni Eutectic Alloys for Wear Resistance." Advanced Materials Research 1019 (October 2014): 347–54. http://dx.doi.org/10.4028/www.scientific.net/amr.1019.347.

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Vanadium carbide is less dense, harder and tougher than tungsten carbide, and nickel is more corrosion resistant that cobalt. Replacing the binder with Ni should improve the corrosion resistance. Since there are eutectics with a wide range of compositions in the C-Ni-V system, this system has potential for wear resistant alloys with ~VC as the discrete hard phase and the nickel solid solution as the binder. The aim of this work was to ascertain if eutectic microstructures with vanadium carbides could be beneficial to wear resistance. Phase studies confirmed the wide range of the eutectic alloy

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Zhang, Liang, Longlong Yang, Kun Sun, Pujie Zhu, and Keru Chen. "The Influence of Carbides on Atomic-Scale Mechanical Properties of Carbon Steel: A Molecular Dynamics Study." Nanomaterials 12, no. 23 (2022): 4179. http://dx.doi.org/10.3390/nano12234179.

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Pearlite is an important structure in carbon steel; however, the influence mechanism of carbides in pearlite on its mechanical properties and microstructure evolution has not yet been fully elucidated. In this work, a ferrite–carbide composite model with various carbide types was constructed to investigate the influence of carbide types via a uniaxial compression deformation using classical molecular dynamics simulations. It was found that the carbide type had little effect on the compressive elastic modulus, but a more obvious effect on the yield strain, yield stress, and flow stress. The max

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Zhang, Yuan Bin, Hui Luo, and Guo Fan Wang. "The Effect of the Microstructure on the Wear-Resistance in the Welding Deposited Metal." Key Engineering Materials 353-358 (September 2007): 766–69. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.766.

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The microstructure and wear-resistance of the welding deposited metal of Fe-Ti-Nb-V-C and Fe-Cr-W-Mo-C alloy system (with American MG700 as example) are studyed by using SEM , TEM and MM200 wear testing machine. It is revealed that Ti and Nb promote the formation of dispersed MC type carbide granules, while the carbides of Cr and W or Mo tend to precipitate along grain boundary. The formation of MC carbide granules depletes the carbon content in the matrix, and then low carbon martensite matrix can be achieved. The hard and tough matrix and the granular carbides improve the wear-resistance of

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Glotka, Alexander, Sergiy Byelikov, and Olena Lysytsya. "MODELING OF CARBIDE FORMATION IN ALLOY OF THE Ni-Cr-Co-W-Mo-Al-Ti-C SYSTEM." Acta Metallurgica Slovaca 30, no. 1 (2024): 15–18. http://dx.doi.org/10.36547/ams.30.1.1991.

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Theoretical modeling of thermodynamic processes of separation of carbide phases was carried out, as well as a practical study of the structure and distribution of chemical elements in carbides. Based on an integrated approach for the Ni-Cr-Co-W-Mo-Al-Ti-C system, new regression models were obtained that make it possible to predict the chemical composition of carbides based on the chemical composition of the alloy. A comparative assessment of the calculation results obtained using regression models and experimental data obtained by X-ray spectroscopy was carried out.

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Brover, G. I., and E. E. Shcherbakova. "Structural organization and properties of surface layers of WC–Co hard alloys after pulsed laser processing." Izvestiya. Ferrous Metallurgy 66, no. 2 (2023): 177–83. http://dx.doi.org/10.17073/0368-0797-2023-2-177-183.

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The article presents the metal-physical studies results of the structure formation effects in surface layers in the hard alloys of the WC–Co system under extreme thermal and deformation effects of pulsed laser radiation. It is shown that the structural organization and properties of hard alloys VK6, VK8, VK10 upon radiation treatment with a power density of 175 MW/m2 are determined by state of the zones which are formed around carbide inclusions due to the various kinds of stresses appearance at the “carbide-bond” composition boundaries, including thermostrictive and phase stresses. The result

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Mirzoev, A. A., and A. V. Verkhovykh. "THE COMPARATIVE RESULTS OF THE THERMODYNAMIC AND FIRST-PRINCIPLE MODELING OF DISORDERED SOLUTIONS OF THE Fe–V SYSTEM." Bulletin of the South Ural State University series "Mathematics. Mechanics. Physics" 17, no. 1 (2025): 53–60. https://doi.org/10.14529/mmph250107.

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Experimental studies have shown that the precipitation of vanadium carbide significantly increases the hardness of steels. However, little is known about the process itself. The article presents the calculations of a number of energy parameters within the framework of density functional theory. This allows us to understand the formation of vanadium carbides and to describe the energy of their boundary with the ferrite phase.

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Shakespeare, Cody J., Min Li, Shichun Huang, Zhaohuan Zhu, and Jason H. Steffen. "The Effects of the Carbon-to-oxygen Ratio on the Condensate Compositions around Solar-like Stars." Astronomical Journal 169, no. 3 (2025): 180. https://doi.org/10.3847/1538-3881/adaead.

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Abstract The initial stellar carbon-to-oxygen (C/O) ratio can have a large impact on the resulting condensed species present in the protoplanetary disk and, hence, the composition of the bodies and planets that form. The observed C/Os of stars can vary from 0.1–1. We use a sequential dust condensation model to examine the impact of the C/O on the composition of solids around a solar-like star. We utilize this model in a focused examination of the impact of varying the initial stellar C/O to isolate the effects of the C/O in the context of solar-like stars. We describe three different system ty

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Karen, Pavel, and Bohumil Hájek. "Hydrolysis of manganese carbides Mn5C2 and Mn23C6." Collection of Czechoslovak Chemical Communications 51, no. 8 (1986): 1628–35. http://dx.doi.org/10.1135/cccc19861628.

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Diffractographically pure manganese carbides Mn5C2 and Mn23C6 were hydrolyzed with water at 25 and 60 °C. Based on the model of contracting spherical particles in the carbide powder particulate system, the corrosion rates were calculated from the course of gas evolution during the hydrolysis; the values obtained were as follows in μm/h: Mn5C2: 1.2 ± 0.4 at 25 °C and 10 ± 3 at 60 °C, and Mn23C6: 0.15 ± 0.01 at 25 °C and 2.2 ± 0.2 at 60 °C. The hydrolysis gives rise to hydrogen and a concentration-decreasing sequence of predominantly saturated hydrocarbons, the fraction of C2 and higher hydrocar

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Pachaiyappan, R., R. Gopinath, and S. Gopalakannan. "Processing Techniques of a Silicon Carbide Heat Exchanger and its Capable Properties – A Review." Applied Mechanics and Materials 787 (August 2015): 513–17. http://dx.doi.org/10.4028/www.scientific.net/amm.787.513.

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Silicon carbides is a composite ceramic material produced from inorganic non-metallic substances, formed from the molten mass which solidifies on cooling and simultaneously matured by the action of heat. It is used in various applications such as grinding wheels, filtration of gases and water, absorption, catalyst supports, concentrated solar powers, thermoelectric conversion etc. The modern usage of silicon carbide is fabricated as a heat exchanger for high temperature applications. Leaving behind steel and aluminium, silicon carbide has an excellent temperature withstanding capability of 142

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Tarraste, Marek, Jakob Kübarsepp, Kristjan Juhani, Märt Kolnes та Mart Viljus. "High Energy Milling of WС-FeСr Cemented Carbide". Key Engineering Materials 799 (квітень 2019): 136–41. http://dx.doi.org/10.4028/www.scientific.net/kem.799.136.

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During production of cemented carbides hard and brittle tungsten carbide (WC) and ductile metal powders (mainly from Fe-group) are milled together. Complete milling results in a Gaussian distribution and narrow particle size range of the milled powder which promote the homogeneity and improve the properties of sintered composites. Cobalt, conventional metal employed in cemented carbides, possesses good comminution characteristics with WC powder. However, its toxicity and fluctuating price pushes researchers to find suitable alternatives and Fe-based alloys have shown most promising results. Ce

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Leow, Guo-Yao, Sze-Mun Lam, Jin-Chung Sin, and Honghu Zeng. "Integration of carbide lime substrate for enhanced energy recovery and dye decomposition in plant-microbial fuel cell coupled with cupric oxide/carbon cathode." E3S Web of Conferences 603 (2025): 01028. https://doi.org/10.1051/e3sconf/202560301028.

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In this study, an innovative and efficient carbide lime-assisted plant-microbial fuel cell (Ca-P-MFC) system was developed for treating dyestuff effluent and generating electricity. This system featured a carbon brush anode and a cupric oxide/carbon (CuO/C) cathode. The Ca-P-MFC system revealed outstanding performance compared to both the P-MFC and CW systems. At a carbide lime loading of 200 mg L−1, the Ca-P-MFC system achieved an impressive methylene blue decomposition efficiency of 86.6% and a maximum power density (P) of 60.2 mW m−2. The improved performance can be attributed to the incorp

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Glotka, Alexander, and Vadim Efimovich Ol'shanetskii. "CONTROL OF THE PROCESSES OF PHASE FORMATION OF CARBIDE COMPONENTS IN NICKEL-BASED SUPERALLOYS." Acta Metallurgica Slovaca 28, no. 2 (2022): 101–5. http://dx.doi.org/10.36547/ams.28.2.1506.

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The mathematical dependences of thermodynamic processes of precipitation of carbide phases are determined, and a practical study of the structure and distribution of chemical elements is carried out. Regularities were established for the effect of the chemical composition of the alloy on the morphology and type of carbides. It is shown that, depending on the introduced chemical elements in the system, the types of carbides and their chemical composition can change, which leads to a decrease in the processes of crack formation in the material. The established dependencies for the multicomponent

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Martikáň, Anton, Andrej Czán, Michal Šajgalík, Mário Drbúl, and Tatiana Czánová. "Analysis And Design Of ADPCM System." Technological Engineering 12, no. 1 (2015): 13–15. http://dx.doi.org/10.1515/teen-2015-0003.

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Abstract In this paper, roughness characteristics as Ra and Rz are observed and their changes regarding to different tool rotation speed without feed, using carbide tool in process of hard machining. By experiments it is shown that, with higher tool revolutions and cutting speed, turning with helical cutting edge yields higher surface quality. Furthermore, during experiments it was proved that it is possible to use carbide tools in hard machining. Results of this paper show that rotational turning has a high potential to become an efficient alternative to hard turning, especially when it comes

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Mazur, Vladyslav. "The Iron-Carbon System: Genesis and Morphology of the Eutectic Involving Hyper-Cementite Carbide." Key Engineering Materials 973 (February 9, 2024): 11–19. http://dx.doi.org/10.4028/p-ftv8w5.

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A straightforward technology for the thermal cyclic processing of the Fe-C melt has been developed to induce significant super-cooling before crystallization. Eutectic crystallization of pro-eutectic alloys under substantial super-cooling is demonstrated to be a complex process, comprising several partial crystallization processes and the synchronous dissolution of crystalline phases: austenite and two metastable carbides, Fe3C and Fe7C3. The kinetics of the eutectic transformation L→L+Fe7C3 in its microscopic and thermal (DSC) imaging has been studied. In general, crystallization proceeds acc

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Rakhadilov, B. K. "Structure and tribological properties of detonation coatings based on Cr3C2-NiCr after pulse-plasmaine treatment." Bulletin of the Karaganda University. "Physics" Series 111, no. 3 (2023): 40–49. http://dx.doi.org/10.31489/2023ph3/40-49.

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Cr3C2 -NiCr metal-ceramic coatings have found wide application in the protection of machine parts and equipment operating under extreme conditions. In this study, Cr3C2 -NiCr based detonation coatings which have been subjected to pulse-plasma treatment were studied. The study showed that IPO reduced the surface roughness by 48 %, reduced the coating friction coefficient by about 2 times, increased the hardness of the coatings from the original 12 GPa to 16.2 GPa and improved their wear resistance by 2 times compared to untreated coatings. Pulse-plasma treatment provides qualitative formation o

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Mazur, V. "EUTECTIC CRYSTALLIZATION OF Fe-C ALLOYS WITH HYPERCEMENTITE CARBIDE." Innovative Materials and Technologies in Metallurgy and Mechanical Engineering, no. 1 (June 28, 2022): 19–25. http://dx.doi.org/10.15588/1607-6885-2022-1-3.

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Рurpose. To investigate the peculiarities of the structure formation in white cast irons with the participation of Fe3C and Fe7C3 carbides. Methods of research. By the comparing detailed both microscopic and thermal (DSC) kinetics of the melting and crystallization process to determine the regularities of the eutectic transformation of the white cast iron under significant undercooling of the liquid phase. Microscopic analysis of samples using a light microscope Jenaphot 2000 (Carl Zeiss, Germany). Thermal analyses using differential scanning calorimeter (DSC) STA 449C “Jupiter” (N

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Briones-Rodríguez, C., Vicente Mayagoitia, and Ricardo Cuenca-Alvarez. "Dry Coated Particle for Plasma Spraying." Materials Science Forum 534-536 (January 2007): 37–40. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.37.

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The performance of an in-house designed mechanofusion process and the preparation of composite powders for plasma spraying are investigated in a variety of powdered mixtures including metal/oxide, carbide/oxide, carbide/metal and metal/oxide/carbide. Scanning electron microscopy shows that dry particle coating depends on the thermo-mechanical and chemical properties of the powdered system. In the metal/oxide, carbide/oxide and metal/oxide/carbide powder mixtures, fine ceramic particles coat the surface of the metallic or ceramic coarser particles with no need of binders or solvents. However wi

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Zagorac, Jelena, Dejan Zagorac, Tamara Skundric, Milan Pejic, Branko Matovic, and Johann Schön. "Theoretical insight into structural and mechanical features of Hf0.5Ta0.5C." Processing and Application of Ceramics 19, no. 2 (2025): 201–13. https://doi.org/10.2298/pac2502201z.

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Tantalum carbide (TaC) and hafnium carbide (HfC), as well as mixed hafnium tantalum carbides, are of great recent scientific and industrial interest due to their structural features, and thermal, elastic and mechanical properties. In order to identify the possible crystal structure candidates in the Hf0.5Ta0.5C system that are (meta)stable for different pressures, a global search was performed on the energy landscape of the system. The obtained structure candidates were further locally optimized on the DFT level and the relaxed structures were crystallographically analysed and compared. As a r

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Chepurov, A. I., S. A. Gromilov, V. M. Sonin, et al. "Synthesis of new polytype modifications of Fe7C3 AT 5,5 GPa." Доклады Академии наук 487, no. 5 (2019): 558–61. http://dx.doi.org/10.31857/s0869-56524875558-561.

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The paper presents the results of experimental studies on the synthesis of carbide Fe7C3 at 5,5 GPa. It was found that carbide Fe3C and several polytypes of carbide Fe7C3 are formed together with diamond when the system is cooled. It is believed that Fe7C3 carbide may be a component of the Earth’s inner core. The obtained results indicate that carbide Fe7C3 in the form of polytypic modifications under natural conditions could be formed at relatively low pressures at the stage of differentiation of the Earth.

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Guo, Jing-ru, Zhao-xia Zhang, Ting-ting Wang, Cong-xiang Chen, and Yang Chen. "F2+-X2+ Band System of Cobalt Carbide." Chinese Journal of Chemical Physics 21, no. 6 (2008): 505–9. http://dx.doi.org/10.1088/1674-0068/21/06/505-509.

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OZPINECI, BURAK, LEON M. TOLBERT, SYED K. ISLAM, and MD HASANUZZAMAN. "SYSTEM IMPACT OF SILICON CARBIDE POWER DEVICES." International Journal of High Speed Electronics and Systems 12, no. 02 (2002): 439–48. http://dx.doi.org/10.1142/s0129156402001368.

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The emergence of silicon carbide- (SiC-) based power semiconductor switches, with their superior features compared with silicon- (Si-) based switches, has resulted in substantial improvements in the performance of power electronics converter systems. These systems with SiC power devices have the qualities of being more compact, lighter, and more efficient; thus, they are ideal for high voltage power electronics applications such as a hybrid electric vehicle (HEV) traction drive. More research is required to show the impact of SiC devices in power conversion systems. In this study, findings of

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Burke, A. Alan, Louis G. Carreiro, and Eric S. Greene. "Carbide-based fuel system for undersea vehicles." Journal of Power Sources 176, no. 1 (2008): 299–305. http://dx.doi.org/10.1016/j.jpowsour.2007.10.008.

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Rajendran, S., M. Larrousse, B. R. Bathey, and J. P. Kalejs. "Silicon carbide control in the EFG system." Journal of Crystal Growth 128, no. 1-4 (1993): 338–42. http://dx.doi.org/10.1016/0022-0248(93)90344-v.

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XIE, Guizhong, Tao WANG, Liangwen WANG, et al. "Cemented Carbide Layer Thickness Optimization of Carbide Anvil Based on Thermodynamic Coupling." Mechanics 28, no. 5 (2022): 401–9. http://dx.doi.org/10.5755/j02.mech.30808.

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This paper presents cemented carbide layer thickness optimization of a carbide anvil based on thermodynamic coupling analysis. In our method, the established carbide anvil system through SolidWorks is firstly imported into the finite element software. The temperature field and thermal-mechanical coupling field of the carbide anvil system are analyzed. From the simulation results, it can be found that the contact stress of steel ring under temperature load is increased by 17.9% compared with that without temperature load. Thus, the service life of carbide anvil under temperature load is lower t

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38

Chaus, Alexander S., J. Chovanec, and M. Legerská. "Development of High-Speed Steels for Cast Metal-Cutting Tools." Solid State Phenomena 113 (June 2006): 559–64. http://dx.doi.org/10.4028/www.scientific.net/ssp.113.559.

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As-cast high-speed steels heat-treated have completely much lower impact toughness than that of the steels of a similar chemical composition but undergone hot working – rolling or forging. That is attributed to the influence of eutectic carbides, which especially being coarse, provide easily brittle intergrain fracture sites under low stress intensity factor levels. This is especially real for cast cutting tools. In order to exhibit good all-round performance the impact toughness enhancement of as-cast high-speed steels is obligatorily needed. In this connection it is expedient to turn from hi

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Zhou, Dedong, and Dongdong Shi. "Calcium carbide furnace batching system based on integral separation PID control." Journal of Physics: Conference Series 2530, no. 1 (2023): 012013. http://dx.doi.org/10.1088/1742-6596/2530/1/012013.

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Abstract The precise ratio of raw materials and the uniformity of furnace charge mixing are the premise of calcium carbide quality, energy saving, and consumption reduction, which have a great influence on the operation of calcium carbide furnaces. Based on analyzing the batching equipment and the batching process, the mathematical model of the batching process is established and the model parameters are determined by the method of the soaring curve. According to the characteristics of the batching process, a quantitative feeding control system was designed by using an integral separation PID

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Thode, James M., Daniel P. Harris, Cheng Wan, and Brian M. Leonard. "Synthesis of Metastable Ternary Pd-W and Pd-Mo Transition Metal Carbide Nanomaterials." Molecules 26, no. 21 (2021): 6650. http://dx.doi.org/10.3390/molecules26216650.

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Research and catalytic testing of platinum group transition metal carbides have been extremely limited due to a lack of reliable, simple synthetic approaches. Powder samples have been reported to phase separately above 1%, and only thin-film samples have been reported to have appreciable amounts of precious metal doping. Herein, we demonstrated, through the simple co-precipitation of Pd and W or Mo precursors and their subsequent annealing, the possibility to readily form ternary carbide powders. During the investigation of the Pd-W ternary system, we discovered a new hexagonal phase, (PdW)2C,

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Guzmán, Pablo, Willian Aperador, and Luis Yate. "Enhancement of the Pitting Corrosion Resistance of AISI 316LVM Steel with Ta-Hf-C/Au Bilayers for Biomedical Applications." Journal of Nanomaterials 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/6825250.

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Tantalum carbide (TaC), hafnium carbide (HfC), and Ta-Hf-C mixed coatings with and without a gold (Au) interlayer were deposited on 316LVM steel substrates by the magnetron cosputtering technique in order to improve the corrosion resistance of steel substrates in a simulated biological fluid. To study the effect of the gold interlayer on pitting corrosion, the different systems were placed in contact with Ringer’s solution at pH 7.4 and a temperature of 37°C. The electrochemical properties of the coatings were determined using polarization curves. Subsequently, the surface morphologies were ob

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Liu, Meng Qi, Sheng Li Niu, and Chun Mei Lu. "The Study on the Transesterification Catalyzed by Sodium Compound Loaded on Carbide Slag." Applied Mechanics and Materials 733 (February 2015): 195–98. http://dx.doi.org/10.4028/www.scientific.net/amm.733.195.

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NaOH, Na2CO3 and NaNO3 loaded on carbide slag are used as transesterification catalysts in a batch-type transesterification system. The activated catalysts are characterized by X-ray diffraction and the corresponding catalytic efficiencies are compared. NaOH loaded on calcined carbide slag gains the highest catalytic efficiencies. The optimal activated temperature of NaOH loaded on calcined carbide slag is obtained.

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Azubike, D. C., A. Chrysanthou, and U. O. Igiehon. "A Crystallographic Re-Examination of the (Fe,W)6C Phase Field in the Fe-W-C System." Powder Diffraction 7, no. 3 (1992): 162–63. http://dx.doi.org/10.1017/s0885715600018522.

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AbstractA more accurate X-ray diffraction pattern for the high speed steel carbide Fe3W3C is presented. This pattern includes the low angle reflections omitted from previous studies. A wider homogeneity range for the M6C carbide phase at 1200° C is suggested.

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Markström, Andreas, Susanne Norgren, Karin Frisk, Bo Jansson, and Thérèse Sterneland. "Experimental and thermodynamic evaluation of the Co–Cr–C system." International Journal of Materials Research 97, no. 9 (2006): 1243–50. http://dx.doi.org/10.1515/ijmr-2006-0197.

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Abstract New experimental results on the liquid + graphite + M7C3 equilibrium are presented. The solubility of Co in the M7C3 carbide has been measured at 1523 and 1723 K. These measurements together with recently published measurements on the fcc + graphite + M7C3 equilibrium show that the solubility of Co in the M7C3 is much higher than predicted from thermodynamic calculations. A new thermodynamic description of the Co–Cr –C system is presented which accurately describes the solubility of Co in the M7C3 carbide in the temperature range 1373 – 1723 K.

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Arzumanova, A. V., and A. V. Starunov. "Effect of Electrolysis Modes on Physico-Mechanical Properties of Composite Coatings Based on Nickel." Materials Science Forum 945 (February 2019): 647–52. http://dx.doi.org/10.4028/www.scientific.net/msf.945.647.

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The receiving method and some properties of the composite nickel containing galvanic coating on base nickel-cobalt-oxide silicon-carbide silicon system were discussed. Chloride electrolyte for the application of the composite electroplating coating with firmness to wear and corrosion properties of nickel-cobalt-oxide silicon-carbide silicon system was elaborated. Influence of electrolysis and electrolyte composition on physico-mechanical properties (firmness to wear, corrosion resistance, hardness, internal tensions, porosity, adhesion) of the composite electrolytic coating of nickel-cobalt-si

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Ol’shanetskii, V., O. Glotka, V. Greshta, and V. Khvostak. "IMPROVING THE PROPERTIES OF NICKEL-BASED SUPERALLOYS OF DIRECTED CRYSTALLIZATION BY OPTIMIZING THE CHEMICAL COMPOSITION." Innovative Materials and Technologies in Metallurgy and Mechanical Engineering, no. 2 (January 5, 2023): 8–12. http://dx.doi.org/10.15588/1607-6885-2022-2-1.

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Purpose. It consists in establishing the influence of the chemical composition on the type, chemical composition and morphology of the primary carbides of the nickel-based superalloy, which allows to increase the operational properties of the parts through the structure of the carbide component. Research methods. Process modeling was carried out using the CALPHAD method. The initial data were the chemical compositions of model alloys with different concentrations of carbide-forming elements. The result of the calculation was the chemical composition of the carbides released in the corres

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Vorozhtsov, V. A., V. L. Stolyarova, S. I. Lopatin, and A. L. Shilov. "High Temperature Mass Spectrometric Study of Vaporization of The Oxycarbide Ceramics Based on the MAX-Phases." Журнал неорганической химии 69, no. 3 (2024): 448–62. http://dx.doi.org/10.31857/s0044457x24030189.

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In the present study, the vaporization processes of the carbide materials with the Ti2SiC, Ti3SiC2, Ti2AlC, Ti3AlC2, Zr2AlC, Zr3AlC2 chemical compositions containing the MAX-phases as well as the oxycarbide systems based on these materials with the addition of hafnia were examined by the Knudsen effusion mass spectrometric method up to the temperature 2200 K. It was established that the main vapor species over the samples with the Ti2AlC, Ti3AlC2, Zr2AlC, and Zr3AlC2 compositions at the temperature 1500 K was atomic aluminum. The samples containing silicon were less volatile compared to the ca

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Rabin, Barry H. "Joining of Silicon Carbide/Silicon Carbide Composites and Dense Silicon Carbide Using Combustion Reactions in the Titanium-Carbon-Nickel System." Journal of the American Ceramic Society 75, no. 1 (1992): 131–35. http://dx.doi.org/10.1111/j.1151-2916.1992.tb05454.x.

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Novoselova, Inessa, Serhii Kuleshov, Anatoliy Omel’chuk, Valerii Bykov, and Olena Fesenko. "ELECTROREDUCTION OF DITUNGSTATE AND CARBONATE ANIONS IN CHLORIDE MELT." Ukrainian Chemistry Journal 87, no. 12 (2022): 97–108. http://dx.doi.org/10.33609/2708-129x.87.12.2021.97-108.

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Electrocatalysis is one of the actively developing fields of application of tungsten carbides. For the synthesis of catalytically active carbides (materials with a large specific surface area, small particle size and structural defects) a large number of different technologies are being developed in the world. The method of high-temperature electrochemical synthesis is promising one. For its successful realization, it is necessary to study in detail the electrochemical behavior of each carbide component (tungsten and carbon) and the features of their partial and joint discharge. The aim of thi

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Arivudainambi, J., and P. Muthusamy. "Mechanical Properties of Aluminum Alloys Reinforced with Silicon Carbide Particles Using Weighted Sum Model." Materials and its Characterization 1, no. 2 (2022): 147–53. http://dx.doi.org/10.46632/mc/1/2/12.

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Chlorine and a material with similar or lower electropositive, typically a metal or a mineral oxide, are combined to form chromium at temperatures between 1,000 and 2,800 °C (1,800 and 5,100 °F). Any nitride can be made using one of multiple common techniques. When milling hard materials like carbon steel or wrought iron, or in situations when steel tools would soon wear out, such as in high-volume, mass yield, cutting tools edges are frequently utilised. The compound known as carbide is made up of oxygen and metals or semi-metallic components. It is present in ionic form. The ionic or covalen

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