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The effect of microwave heating on the microstructure and the mechanical properties of reaction‐bonded boron carbide
Author(s) -
Dutto Mathieu,
Goeuriot Dominique,
Saunier Sébastien,
SaoJoao Sergio,
Marinel Sylvain,
Frage Nachum,
Hayun Shmuel
Publication year - 2019
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13379
Subject(s) - materials science , microstructure , boron carbide , microwave , silicon carbide , microwave heating , carbide , composite material , boron , chemistry , organic chemistry , physics , quantum mechanics
Reaction‐bonded boron carbide composites were fabricated by both microwave (under Ar/10% H 2 ) and conventional heating (under vacuum or Ar/10% H 2 ). Silicon carbide (SiC) formation occurred in all cases and was slightly favored in the case of microwave heating under Ar/H 2 . 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/H 2 . 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.