Sintering and characterization of additive‐free B₄C/SiCw composites using high‐pressure techniques

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Increasing SiCW content improved mechanical performance, but excess led to inhomogeneity and lower toughness.
The optimal performance was seen in composites with 5 wt.% SiCW sintered at 1850°C, achieving 99.25% density.
Thermal diffusivity showed minimal degradation in the optimal sample, remaining stable from room temperature to 1400°C.
High SiCW content resulted in better room temperature thermal diffusivity but reduced stability at elevated temperatures.

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Additive-free B4C ceramics reinforced with SiCW show improved mechanical properties, highlighting the impact of whisker content.

Matović et al. (2025) studied this question.

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