Modification of commercial boron carbide powder using Rapid Carbothermal Reduction

Muhammet Fatih Toksoy, Richard A. Haber

Research output: Contribution to journalArticle

Abstract

Non-uniform morphology and existence of free carbon are two main problems for commercial boron carbide powders. This work proposes a method for eliminating free carbon and changing the morphology of commercial powders using Rapid Carbothermal Reduction (RCR) process. Free carbon is eliminated from commercial boron carbide powders and morphology is evolved to less angular shapes with limited particle size growth. Commercial and modified powders were densified by Spark Plasma Sintering at 1900°C with 0, 5, and 20 minutes dwell. Despite the particle size growth, modified boron carbide powders reached >99% TD with shorter dwell times compared with commercial starting powders. Improved microhardness observed with dense modified samples as a result of enhanced morphology and increased twinning.

Original languageEnglish (US)
Pages (from-to)1120-1125
Number of pages6
JournalInternational Journal of Applied Ceramic Technology
Volume16
Issue number3
DOIs
Publication statusPublished - May 1 2019

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Condensed Matter Physics
  • Marketing
  • Materials Chemistry

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