Method of calculating the phase composition of SiC–Si–C materials obtained by silicon infiltration of carbon matrices

Ershov, A. E.; Шикунов, С.Л.; Курлов, В. Н.

doi:10.1134/s1063784217060093

Cited by 5 publications

(1 citation statement)

References 8 publications

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“…The metal-carbon blanks were derived by pressing metal foils alongside a mixture of fine carbon powders and a polymer binder. This methodology draws from the technique employed in producing ceramic SiC materials and their components [45,46], which facilitated overcoming challenges associated with manufacturing complex-shaped products using SiC ceramics. The ceramic material is obtained through a non-shrink siliconization process (involving the impregnation of a carbon-containing workpiece with molten silicon to yield silicon carbide) of porous carbon materials.…”

Section: Composite Fabricationmentioning

confidence: 99%

Fabrication of Layered SiC/C/Si/MeSi2/Me Ceramic–Metal Composites via Liquid Silicon Infiltration of Metal–Carbon Matrices

Kaledin,

Shikunov,

Zubareva

et al. 2024

Materials

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The growing demand for composite materials capable of enduring prolonged loads in high-temperature and aggressive environments presents pressing challenges for materials scientists. Ceramic materials composed of silicon carbide largely possess high mechanical strength at a relatively low density, even at elevated temperatures. However, they are inherently brittle in nature, leading to concerns about their ability to fracture. The primary objective of this study was to develop a novel technique for fabricating layered composite materials by incorporating SiC-based ceramics, refractory metals, and their silicides as integral constituents. These layered composites were produced through the liquid-phase siliconization method applied to metal–carbon blanks. Analysis of the microstructure of the resultant materials revealed that when a metal element interacts with molten silicon, it leads to the formation of a layer of metal silicide on the metal’s surface. Furthermore, three-point bending tests exhibited an enhancement in the bending strength of the layered composite in comparison to the base silicon carbide ceramics. Additionally, the samples demonstrated a quasi-plastic nature during the process of destruction.

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Section: Composite Fabricationmentioning

confidence: 99%

Fabrication of Layered SiC/C/Si/MeSi2/Me Ceramic–Metal Composites via Liquid Silicon Infiltration of Metal–Carbon Matrices

Kaledin,

Shikunov,

Zubareva

et al. 2024

Materials

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SiC-Based Composite Materials Obtained by Siliconizing Carbon Matrices

Шикунов

Курлов

2017

Tech. Phys.

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Analysis of methods for increasing the oxidation resistance of carbon-graphite products used in metallurgical and chemical units

Feshchenko

Erokhina

Eremin

et al. 2021

jour

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This review study analyses the existing methods for increasing the oxidation resistance of carbon-graphite products, as well as assesses their applicability in metallurgical and chemical units. The reseach basis was the data published on the oxidation mechanism of carbon-graphite materials, conditions for their use in metallurgical and chemical processes, as well as existing technologies aimed at improving the oxidation resistance of artificial graphites. The existing ideas about the kinetics of carbon graphite oxidation are described depending on temperature conditions. A review of existing technologies for increasing the oxidation resistance of materials and their economic efficiency, taking into account the conditions of their operation, was carried out. Prospects of the presented solutions for the units of metallurgical and chemical industries were analysed. Three modes of oxidation of graphitised materials were distinguished on the basis of operating conditions, chemical and physical properties. According to this classification, the most rational method for increasing oxidation resistance consists in the impregnation of carbon-graphite materials with the formation of a protective glassy coating in the volume of through pores or with the formation of a coating (a continuous layer on the surface of the product) due to the occurrence of a chemical reaction with the reagents used. For most metallurgical and chemical units, the impregnation of carbon-graphite materials with the formation of borate and phosphate glasses is preferable, primarily due to lower economic costs. The applicability of this method is currently limited by temperature conditions, at which the protective properties and continuity of the formed glassy coatings are preserved. Therefore, additional research is required to adapt the conventional technological and technical solutions to the high-temperature conditions of metallurgical units (over 800°C).

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Method of calculating the phase composition of SiC–Si–C materials obtained by silicon infiltration of carbon matrices

Cited by 5 publications

References 8 publications

Fabrication of Layered SiC/C/Si/MeSi2/Me Ceramic–Metal Composites via Liquid Silicon Infiltration of Metal–Carbon Matrices

Fabrication of Layered SiC/C/Si/MeSi2/Me Ceramic–Metal Composites via Liquid Silicon Infiltration of Metal–Carbon Matrices

SiC-Based Composite Materials Obtained by Siliconizing Carbon Matrices

Analysis of methods for increasing the oxidation resistance of carbon-graphite products used in metallurgical and chemical units

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