Study of static and dynamic behavior of TiB2–B4C composite

Gao, Yubo; Tang, Tiegang; Yi, Chunhai; Zhang, Wei; Li, Dacheng; Xie, Wenbo; Huang, Wei; Ye, Nan

doi:10.1016/j.matdes.2015.12.123

Cited by 46 publications

(23 citation statements)

References 27 publications

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“…TiB 2 is another super-hard material with high hardness (34 GPa) and superconductivity (14.4 μΩ•cm). It can be combined with B 4 C to form a composite material that results in inhibition of grain growth, lower sintering temperature and improved mechanical properties [11][12][13][14][15][16][17] . When sintered at high temperature, the overall performance of nanoscale Ti and B 4 C powders is weaker than that of pure B 4 C [18] .…”

Section: Introductionmentioning

confidence: 99%

Properties of B₄C-TiB₂ ceramics prepared by spark plasma sintering*

et al. 2021

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By doping titanium hydride (TiH2) into boron carbide (B4C), a series of B4C + x wt% TiH2 (x = 0, 5, 10, 15, and 20) composite ceramics were obtained through spark plasma sintering (SPS). The effects of the sintering temperature and the amount of TiH2 additive on the microstructure, mechanical and electrical properties of the sintered B4C-TiB2 composite ceramics were investigated. Powder mixtures of B4C with 0–20 wt% TiH2 were heated from 1400 °C to 1800 °C for 20 min under 50 MPa. The results indicated that higher sintering temperatures contributed to greater ceramic density. With increasing TiH2 content, titanium diboride (TiB2) formed between the TiH2 and B4C matrix. This effectively improved Young’s modulus and fracture toughness of the composite ceramics, significantly improving their electrical properties: the electrical conductivity reached 114.9 S⋅cm−1 at 1800 °C when x = 20. Optimum mechanical properties were obtained for the B4C ceramics sintered with 20 wt% TiH2, which had a relative density of 99.9 ± 0.1%, Vickers hardness of 31.8 GPa, and fracture toughness of 8.5 MPa⋅m1 / 2. The results indicated that the doping of fine Ti particles into the B4C matrix increased the conductivity and the fracture toughness of B4C.

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Section: Introductionmentioning

confidence: 99%

Properties of B₄C-TiB₂ ceramics prepared by spark plasma sintering*

et al. 2021

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“…Boron carbide (B4C) based ceramic materials have been intensively studied, because of their excellent properties [1][2][3]. Due to its prevailing covalent bonding the boron carbide based ceramic materials are extremely hard.…”

Section: Introductionmentioning

confidence: 99%

Boron Carbide Based Ceramic Composites Hot Pressed With Aluminium Additive

Švec¹,

Gábrišová²,

Brusilová³

et al. 2020

Acta Metall Slovaca

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Ceramic composite materials consisting of B4C matrix and Al8B4C7 secondary phase were prepared by in situ reactive sintering of the initial powder mixture B4C-Al with concentration from 5 to 25 wt.% Al sintering additives. The composite samples were hot pressed at the temperature of 1850 °C, pressure of 35 MPa, for 15 min in a vacuum atmosphere. The portion of Al8B4C7 secondary phase increased from 3.3 to 22.1 wt.% when increasing the concentration of Al sintering additive from 5 to 25 wt.% Al. Significant improving of densification and mechanical properties was measured at increasing of Al sintering additive concentration from 5 to 10 wt.% Al. The highest average hardness of 28.74 GPa was achieved when adding 15 wt.% Al sintering additive. The fracture toughness increased with concentration of Al sintering additive in whole concentration range with the highest average value of 5.92 MPa.m1/2 at 25 wt.% Al sintering additives.

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“…B 4 C possesses mainly an exceptional hardness of 20-45 GPa and high Young's modulus of 360-500 GPa [1][2][3]. It has high melting point of 2450°C and low density of 2.52 g/cm 3 [2,[4][5][6][7][8]. B 4 C is characterised by good wear resistance, excellent chemical stability as well as high capacity for neutron absorption [4,8,9].…”

Section: Introductionmentioning

confidence: 99%

Reactive sintering of B4c-TiB2 composites from B4 and TiO2 precursors

Švec

Gábrišová

Brusilová

2020

PAC

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The effect of sintering temperature in the interval from 1775 to 1850?C on the density, microstructure, hardness and fracture toughness of ceramic composites consisting of a boron carbide matrix and titanium diboride secondary phase was studied. The composites were hot pressed using in situ reaction between boron carbide and 40 wt.% of titanium dioxide additive. The samples were hot pressed at different temperatures but for the constant time of 60min, under the pressure of 35MPa in vacuum of 10 Pa. Both Vickers hardness and fracture toughness of the composites increased with the sintering temperature.Maximal hardness of 29.8GPa and fracture toughness of 6.9MPa?m1/2 were achieved for the composite with 29.6 vol.% of titanium diboride secondary phase sintered at the highest sintering temperature of 1850?C.

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Study of static and dynamic behavior of TiB2–B4C composite

Cited by 46 publications

References 27 publications

Properties of B₄C-TiB₂ ceramics prepared by spark plasma sintering*

Properties of B₄C-TiB₂ ceramics prepared by spark plasma sintering*

Boron Carbide Based Ceramic Composites Hot Pressed With Aluminium Additive

Reactive sintering of B4c-TiB2 composites from B4 and TiO2 precursors

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Study of static and dynamic behavior of TiB2–B4C composite

Cited by 46 publications

References 27 publications

Properties of B4C-TiB2 ceramics prepared by spark plasma sintering*

Properties of B4C-TiB2 ceramics prepared by spark plasma sintering*

Boron Carbide Based Ceramic Composites Hot Pressed With Aluminium Additive

Reactive sintering of B4c-TiB2 composites from B4 and TiO2 precursors

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Product

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Properties of B₄C-TiB₂ ceramics prepared by spark plasma sintering*

Properties of B₄C-TiB₂ ceramics prepared by spark plasma sintering*