In-situ synthesis and densification of boron carbide and boron carbide-graphene nanoplatelet composite by reactive spark plasma sintering

Alexander, Rajath; Murthy, T.S.R.Ch.; Vasanthakumar, K.; Karthiselva, N.S.; Bakshi, Srinivasa Rao; Dasgupta, Kinshuk

doi:10.1016/j.ceramint.2018.08.154

Cited by 16 publications

(7 citation statements)

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“…1 The combination of extraordinary high stiffness (E = 450 GPa) and low specific weight (2.52 g/cm 3 ) produces an outstanding stiffness/weight ratio compared to all other constructional material types. The high-temperature stability up to 2400°C and the neutron absorption behavior of boron carbide are functionally advantageous for nuclear power plant constructions.…”

Section: Introductionmentioning

confidence: 99%

“…The high-temperature stability up to 2400°C and the neutron absorption behavior of boron carbide are functionally advantageous for nuclear power plant constructions. [1][2][3][4] Moreover electrical, thermal, or thermoelectric relevant properties are unique among other ceramic materials. 2 Boron carbide ceramics can reach high mechanical strength and show exceptional high hardness which results in good abrasion resistance of this material.…”

Section: Introductionmentioning

confidence: 99%

“…Because of the strong covalent bonding the densification rate of boron carbide is quite low. 1,2,12,13,17 Methods as hot pressing, SPS or reactive hot-pressing procedures are principally costly and limited with concern to the product geometry. The principal parameters of boron carbide sintering are described by Thevenot 4 or Suri.…”

Section: Introductionmentioning

confidence: 99%

“…The high-temperature stability up to 2400°C and the neutron absorption behavior of boron carbide are functionally advantageous for nuclear power plant constructions. 1 The combination of extraordinary high stiffness (E = 450 GPa) and low specific weight (2.52 g/cm 3 ) produces an outstanding stiffness/weight ratio compared to all other constructional material types. 2 Boron carbide ceramics can reach high mechanical strength and show exceptional high hardness which results in good abrasion resistance of this material.…”

Section: Introductionmentioning

confidence: 99%

“…2 Boron carbide ceramics can reach high mechanical strength and show exceptional high hardness which results in good abrasion resistance of this material. [1][2][3][4] Moreover electrical, thermal, or thermoelectric relevant properties are unique among other ceramic materials. [4][5][6] A moderate electrical (1 S/ cm) and thermal (15 W/mK) conductivity can be modified in a wide range by shifting the ratio of boron and carbon amount (B 10 C…B 4 C) 7 or by the manufacture of composites.…”

Section: Introductionmentioning

confidence: 99%

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Pressureless sintering and properties of boron carbide composite materials

Martin

Feng

Michaelis

2019

Int J Applied Ceramic Tech

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Boron carbide and Tantalum boride composites were prepared by pressureless sintering of B 4 C with addition of TaC powder. The effect of TaC addition on the sinterability of boron carbide was studied. High densified ceramic with a relative density of 98.7% was obtained at sintering temperature of 2250°C. The composition and the microstructure of the dense composites are characterized by means of x-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive x-ray spectroscopy (EDX). The studies show that the composites contain boron carbide, TaB 2 , and carbon phases with a homogeneous structure. In addition, the correlation between the composition and the electrical conductivity was investigated. The electrical conductivity of the composite increased with increasing addition of TaC, and a change in conduction behavior from semiconducting to metallic was observed.High hardness value of 28.49 ± 1.33 GPa was obtained by the sample with 30 wt% TaC addition. K E Y W O R D S boron carbide, electrical conductivity, pressureless sintering, tantalum boride How to cite this article: Martin H-P, Feng B, Michaelis A. Pressureless sintering and properties of boron carbide composite materials. Int J Appl Ceram Technol.

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Section: Introductionmentioning

confidence: 99%