The effect of microwave heating on the microstructure and the mechanical properties of reaction‐bonded boron carbide. Issue 2 (18th September 2019)

• Record Type: Journal Article
• Authors: Dutto, Mathieu; Goeuriot, Dominique; Saunier, Sébastien; Sao‐Joao, Sergio; Marinel, Sylvain; Frage, Nachum; Hayun, Shmuel
• Is Part Of: International journal of applied ceramic technology. Volume 17:Issue 2(2020)
• Page Start: 751
• Page End: 760
• Publication Date: 2019-09-18
• Subjects: boron carbide -- microwave -- reaction bonding; Ceramics -- Periodicals; Ceramics -- Technological innovations -- Periodicals; 620.1405
• DOI: 10.1111/ijac.13379
• Languages: English
• ISSNs: 1546-542X

Abstract

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.