Metal-ceramics based on nanostructured boron carbide

Antadze, M.; Chedia, Roin; Tsagareishvili, Otar; Mikeladze, Archil; Gacheciladze, A.; Margiev, Boris; Gabunia, Domenti; Tsuladze, T.; Khantadze, D.V.

doi:10.1016/j.solidstatesciences.2012.08.004

Cited by 16 publications

(6 citation statements)

References 4 publications

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“…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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Section: Binary Ceramic Compositions With Diboridesmentioning

confidence: 99%

“…Detailed results of boron carbide matrix nanocomposites obtained using the liquidcharge technology are published in research papers [1][2][3][4][5][6][7][8][9][10][11][12], conference reports [13,14], and reviews [15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

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

Chkhartishvili

Mikeladze²,

Tsagareishvili³

et al. 2023

Condensed Matter

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“…The carbothermic process includes cheaper raw materials, for example, boron oxide and boric acid which is reduced by carbon to give boron carbide [5,6]. There are several studies for the usage of different types of carbon sources, such as citric acid gel [6][7][8][9], sucrose [10][11][12][13] and organic polymer precursor [14,15].…”

Section: Introductionmentioning

confidence: 99%

Recycling of Hazelnut Shell: Synthesis of Boron Carbide by Carbothermic Reaction

Budak¹,

Hizarci²,

Yılmaz³

2020

RAP 2019 Conference Proceedings

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In the present study, boron carbide was prepared using boric acid and hazelnut shell activated carbon by a carbothermic reduction method at 1400 °C. Two different methods were applied to obtain activated carbon for this study; activated carbon production using hazelnut shells (I) and sulfuric acid treatment of hazelnut shells (II). The formation of boron carbide was proven by Fourier transformation infrared spectroscopy (FTIR) and X-ray diffraction(XRD), also the morphological examination was done by scanning electron microscopy (SEM). The average grain sizes were found as 30 and 7 nm for II and I, respectively. In addition, the calculated lattice parameters were closely matched with the reported values in the JCPDS card. It was found that hazelnut shells can be used as an alternative carbon source for boron carbide synthesis.

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“…Finally, in a number of previous studies [33][34][35][36][37][38][39][40][41][42][43][44][45], the authors of this paper reported on the technologies for producing nanopowdered B 4 C and B 4 C-TiB 2 .…”

Section: Introductionmentioning

confidence: 99%

Production of titanium-containing metal-ceramic composites based on boron carbide in the nanocrystalline state

Mikeladze

Tsagareishvili

Chkhartishvili

et al. 2019

Advances in Applied Ceramics

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The results of the study of the production technology, phase composition, structure and physico-mechanical properties of metal-ceramic materials based on boron carbide and their components are presented. Boron carbide was obtained by direct synthesis from chemical elements using amorphous boron and carbon black. By mechanical dispersion, solid reagents were converted into an ultrafine state. Using a chemical method, nanoscale (70-80 nm) boron carbide was synthesised from suspension solutions of amorphous boron and liquid hydrocarbons. Boron carbide-based metal-ceramic composite powder B 4 C-(Co-Ni-Ti) was obtained by mechanical dispersion of the constituent components. Based on results of studying of the temperature-dependence of wetting angle of boron carbide with Co-Ni-Ti metallic alloy, the compacting modes of metal-ceramic composite powders by plasma-spark sintering and hot pressing have been developed. The influence of the component content of the binder metal (alloy) on some physico-mechanical properties (linear expansion coefficient, hardness, and bending strength) of hardmetal-ceramic materials based on boron carbide was studied. It was found that the optimum content of the metal component in the composite is ∼ 25 wt-%. In the temperature range 300-600°C, the materials obtained are characterised by stable dimensional factors, since in this temperature range the thermal conductivity coefficient does not depend much on temperature. At room temperature, their bending strength is about 1 GPa. A new method of chemical synthesis of nanocrystalline ceramic compositions of boron carbide and titanium diboride using suspension solutions for the preparation of powders and their spark plasma sintering was also developed to obtain a compacted material of composition B 4 C+30 wt-%TiB 2 , which has a high hardness of 95 HRA (with maximum microhardness 45.6 GPa) and sufficient strength (with a bending strength of 834 MPa).

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Metal-ceramics based on nanostructured boron carbide

Cited by 16 publications

References 4 publications

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

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

Recycling of Hazelnut Shell: Synthesis of Boron Carbide by Carbothermic Reaction

Production of titanium-containing metal-ceramic composites based on boron carbide in the nanocrystalline state

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