Synthesizing fine-grained powders of complex compositions B4C–TiB2–WC–Co

Chkhartishvili, Levan; Mikeladze, Archil; Chedia, Roin; Tsagareishvili, Otar; Barbakadze, Natia; Sarajishvili, Ketevan; Darchiashvili, Maguli; Ugrekhelidze, Vakhtang; Korkia, T.

doi:10.1016/j.solidstatesciences.2020.106439

Cited by 15 publications

(8 citation statements)

References 24 publications

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“…Because of complex properties useful for diverse industrial applications, hard nanocomposites based on boron carbide (with the approximate chemical formula B 4 C) serve for an important class of advanced materials. In previous works [1][2][3][4][5][6], we developed an effective method of their chemical synthesizing in nanopowdered form from corresponding liquid charges. As is known (e.g., see [7]), optimization of the parameters of chemical technologies is possible through their mathematical modeling.…”

Section: Introductionmentioning

confidence: 99%

On Modeling of Synthesis Process of Boron Carbide Based Nanocomposites

Chkhartishvili

Antashvili²,

Dalakishvili³

et al. 2021

Condensed Matter

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Nanocomposites based on boron carbide B4C are hard materials with wide field of applications in modern technologies. A system of first-order ordinary differential equations that simulates the process of chemical synthesis of nanopowders of B4C–TiB2 compositions containing titanium diboride (TiB2) as an additional phase is suggested and resolved numerically for a typical ratio of reaction constants. Reagents and products concentrations are found as time-functions. In this way, the optimal route of production technology of boron carbide-based nanomaterials can be identified.

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Section: Introductionmentioning

confidence: 99%

On Modeling of Synthesis Process of Boron Carbide Based Nanocomposites

Chkhartishvili

Antashvili²,

Dalakishvili³

et al. 2021

Condensed Matter

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“…Using SEM images (Figure 10) of powders obtained [7] in inert atmosphere at 1425 and 1450 °C, we state that B4C particle sizes are between 1 and 3 μm and that they are surrounded by TiB2 particles. For a B4C-20 wt.%TiB2 composite, the theoretically expected B:C:Ti ratio, derived from the charge mixture, differs from that obtained experimentally from the averaged EDX (Energy Dispersive X-ray) spectra.…”

Section: B4c-tib2mentioning

confidence: 97%

“…The synthesis of a boron carbide and titanium diboride nanocomposite (B 4 C-TiB 2 ) derived from a liquid-charge is reported in several works [1,[4][5][6][7]14,23]. The initial suspension consists of amorphous boron or a boron compound, titanium dioxide (TiO 2 ), and a liquid organic precursor (carbohydrates, polyols, PVA, or others).…”

Section: Binary Ceramic Compositions With Diboridesmentioning

confidence: 99%

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Advanced Boron Carbide Matrix Nanocomposites Obtained from Liquid-Charge: Focused Review

Chkhartishvili

Mikeladze²,

Tsagareishvili³

et al. 2023

Condensed Matter

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Boron carbide is known as a hard material; it possesses a unique complex of physical-mechanical properties and has diverse applications in industries. An expansion of its field of uses stems from the creation of boron carbide matrix nanocomposite materials. In view of this perspective, an effective liquid-charge synthesizing method for their components in nanopowder form has been proposed. This paper provides a focused review on advanced boron carbide matrix ceramic and metal-ceramic nanocomposites recently obtained by the authors using this method. Particular attention is paid to the characterization of boron carbide nanocomposites, including some ceramic borides, metallic alloys and also other metal-ceramic composites.

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“…This material is widely used in industry and has become one of the most important and strategic engineering ceramics [5][6][7]. Therefore, acquiring the technical knowledge of B4C production, achieving its manufacturing technology from available raw materials, as well as using cost-effective fabrication methods are of special importance [8][9][10]. There are various techniques for synthesis of B4C ceramics including carbothermal reduction [11,12], synthesis from its elemental constituents [13,14], magnesiothermal reduction [15,16], chemical vapor deposition (CVD) [17][18][19], and synthesis from polymeric raw materials [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Performance of glucose, sucrose and cellulose as carbonaceous precursors for the synthesis of B4C powders

et al. 2022

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Boron carbide is the third hardest material in the world after diamond and cubic boron nitride, which is one of the most strategic engineering ceramics in various industrial applications. The aim of this research is to synthesize B4C by reacting boric acid as boron source with polymers from the saccharide family as carbon sources, and to determine the best saccharide as precursor. For this purpose, glucose (monosaccharide), sucrose (disaccharide), and cellulose (polysaccharide) were used and examined. The samples were prepared by appropriate mixing of the starting materials, pyrolysis at 700 °C, and synthesis at 1500 °C. The results of Fourier transform infrared (FT-IR) spectroscopy and X-ray diffractometry (XRD) showed that among the studied saccharide polymers, glucose is the best carbon source candidate for the synthesis of B4C. To describe precisely, the specimen prepared with glucose and boric acid had more boron carbide and less hydrocarbon.

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Synthesizing fine-grained powders of complex compositions B4C–TiB2–WC–Co

Cited by 15 publications

References 24 publications

On Modeling of Synthesis Process of Boron Carbide Based Nanocomposites

On Modeling of Synthesis Process of Boron Carbide Based Nanocomposites

Advanced Boron Carbide Matrix Nanocomposites Obtained from Liquid-Charge: Focused Review

Performance of glucose, sucrose and cellulose as carbonaceous precursors for the synthesis of B4C powders

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