Paper Title:
Sintering of Commercial B4C with Synthesized B4C Additions
  Abstract

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, J. S. Gutierres, F. C. L. de Melo, "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
$32.00
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