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Boron carbideBoron Carbide (B4C) is a material that exhibits exceptional characteristics, including low densityDensity, high melting pointMelting point, high hardnessHardness, high wear resistanceWear Resistance, high neutron absorption, and other remarkable properties that are considered a favorable material in many areas such as aerospace, military, and nuclear industry. However, B4C suffers from low densification and fracture toughness, limiting its applications. To overcome the difficulties of B4C, recent studies have proposed alternative methods like spark plasma sinteringSpark plasma sintering (SPS) and using a secondary phase as an additiveAdditives and reinforcement in the matrix. Zirconium diboride (ZrB2) and grapheneGraphene nanoplatelets (GNP) became effective materials for improving composite performance. In this regard, the present research has been carried out to investigate the effects of adding different amounts of GNP (1, 2, and 3 vol.%) into B4C-ZrB2 composites prepared by SPS. Their densification, microstructureMicrostructure, hardnessHardness, and fracture toughness were examined with the GNP addition.

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Spark Plasma Sintering and Characterization of B4C-ZrB2-GNP Composites

  • 会议论文

  • 发表日期：

    2025年

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  • Behrad Mokhtari,
  • Leyla Yanmaz,
  • Berkay Uygun,
  • Filiz Cinar Sahin

摘要

Boron carbideBoron Carbide (B4C) is a material that exhibits exceptional characteristics, including low densityDensity, high melting pointMelting point, high hardnessHardness, high wear resistanceWear Resistance, high neutron absorption, and other remarkable properties that are considered a favorable material in many areas such as aerospace, military, and nuclear industry. However, B4C suffers from low densification and fracture toughness, limiting its applications. To overcome the difficulties of B4C, recent studies have proposed alternative methods like spark plasma sinteringSpark plasma sintering (SPS) and using a secondary phase as an additiveAdditives and reinforcement in the matrix. Zirconium diboride (ZrB2) and grapheneGraphene nanoplatelets (GNP) became effective materials for improving composite performance. In this regard, the present research has been carried out to investigate the effects of adding different amounts of GNP (1, 2, and 3 vol.%) into B4C-ZrB2 composites prepared by SPS. Their densification, microstructureMicrostructure, hardnessHardness, and fracture toughness were examined with the GNP addition.