Sintering of Commercial B4C with Synthesized B4C Additions

Abstract:

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Boron Carbide is a ceramic material of technological application due to its extreme hardness and high chemical and thermal stability. The effect of synthesized boron carbide addition on pressureless sintering and hot-pressing of a commercial B4C was investigated. B4C synthesized by carbothermal reduction using carbon black as carbon source was mixtured in 10, 30 and 50 wt% to a commercial B4C. Powder mixtures were compacted into pellets and sintered by pressureless sintering at 2050 °C/30min Samples were compared to a pure commercial B4C and characterization results have not showed great differences. Relative densities of as-sintered materials exceed 93% of theoretical for all compositions and microhardness Hv of ∼ 32 GPa was obtained.

Info:

Periodical:

Materials Science Forum (Volumes 591-593)

Edited by:

Lucio Salgado and Francisco Ambrozio Filho

Pages:

588-592

DOI:

10.4028/www.scientific.net/MSF.591-593.588

Citation:

R. M. da Rocha et al., "Sintering of Commercial B4C with Synthesized B4C Additions", Materials Science Forum, Vols. 591-593, pp. 588-592, 2008

Online since:

August 2008

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Price:

$35.00

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