The effect of microwave heating on the microstructure and the mechanical properties of reaction-bonded boron carbide

Mathieu Dutto, Dominique Goeuriot, Sébastien Saunier, Sergio Sao-Joao, Sylvain Marinel, Nachum Frage, Shmuel Hayun

Research output: Contribution to journalArticlepeer-review

Abstract

Reaction-bonded boron carbide composites were fabricated by both microwave (under Ar/10% H2) and conventional heating (under vacuum or Ar/10% H2). Silicon carbide (SiC) formation occurred in all cases and was slightly favored in the case of microwave heating under Ar/H2. The resulting microstructures were influenced by the heating process and atmosphere; the SiC existed in the form of needles with conventional heating under vacuum. SiC small polygonal grains were present after microwave heating under Ar/H2. Both the atmosphere and the electromagnetic field influence the SiC morphology. Despite this difference, the hardness and toughness of composites obtained by both heating techniques were similar.

Original languageEnglish
Pages (from-to)751-760
Number of pages10
JournalInternational Journal of Applied Ceramic Technology
Volume17
Issue number2
DOIs
StatePublished - 1 Mar 2020

Keywords

  • boron carbide
  • microwave
  • reaction bonding

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