Sintering and Properties of Materials Synthesized on the Basis of Silicon, Boron, and Titanium Carbides by Electrospark Sintering

Ivzhenko, V. V.; Gevorkyan, É. S.; Kosenchuk, T. O.

doi:10.3103/s106345762106006x

Cited by 1 publication

(1 citation statement)

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“…But the density difference between them was not significant (.8%), which may be due to the anti-densification of samples at the later stage of sintering. 17,20,21 As a result, the sample density was reduced, the surface was uneven, there were many pits, and a certain amount of intergranular fracture was formed.…”

Section: 13mentioning

confidence: 99%

Spark plasma sintering of boron nitride micron tubes reinforced boron carbide ceramics with excellent mechanical property

Xuan

Liu

et al. 2023

Int J Applied Ceramic Tech

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In this paper, the novel boron nitride micron tubes (BNMTs) were used to reinforce commercial boron carbide (B 4 C) ceramics prepared via spark plasma sintering technology. The effects of the sintering parameters, sintering temperature, the holding time, and the BNMTs content on the microstructure and mechanical properties of B 4 C/BNMTs composite ceramics were studied. The results indicated that adding a proper amount of BNMTs could inhibit the grain growth of B 4 C and improve the fracture toughness of the B 4 C/BNMTs composite ceramics. The prepared composite ceramic sample with 5 wt% BNMTs at 1850 • C, 8 min and 30 MPa displayed the best mechanical properties. The relative density, hardness, fracture toughness, and bending strength of the samples were 99.7% ± .1%, 35.62 ± .43 GPa, 6.23 ± .2 MPa m 1/2 , and 517 ± 7.8 MPa, respectively.Therein, the corresponding value of hardness, fracture toughness, and bending strength was increased by 10.3%, 43.59%, and 61.5%, respectively, than that of the B 4 C/BNMTs composite ceramic without BNMTs. It was proved that the high interface binding energy and bridging effect between boron carbide and BNMTs were the toughening principle of BNMTs.

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Section: 13mentioning

confidence: 99%