Wear resistant boron carbide compacts produced by pressureless sintering

Turatti, A. M.; Pereira, Altaïr Soria

doi:10.1016/j.ceramint.2017.03.064

Cited by 22 publications

(10 citation statements)

References 31 publications

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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%

“…3,12 The sintering of boron carbide products with high quality as fully dense bulk, high mechanical strength, and satisfying fracture toughness has proved difficult. Because of the strong covalent bonding the densification rate of boron carbide is quite low.…”

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%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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Tribological Characterization of SiC and B4C Manufactured by Plasma Pressure Compaction

Rubino

Pisaturo

Senatore

et al. 2017

J. of Materi Eng and Perform

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The objective of the present study was to assess the tribological properties and the wear behavior of silicon carbide and boron carbide ceramics, produced by the plasma pressure compaction sintering process. Reciprocating sliding tests were executed to evaluate the tribological behavior of silicon carbide and boron carbide. Samples of each material with distinct values of surface roughness Ra were tested. Wear mass loss, coefficients of friction and wear mechanism of the boron carbide and silicon carbide were evaluated by means of microscopes and an energy-dispersive spectroscopy probe. The coefficient of friction of the evaluated boron carbide was found to be 0.8, and the surface roughness affects only the starting transient, while for silicon carbide the steady-state value ranges from 0.5 to 0.8 depending on the roughness value Ra

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