Figure 8

(a) - Vickers hardness (HV), (b) - dynamic strength (σ_SHPB), (c) - strain (e_SHPB) and (d) -toughness (T_SHPB) as a function of the ratio (R) between the amount of B₄C and AlB₁₂ in the initial powder mixtures. The samples were obtained by SPS using the amorphous (B1) or crystalline (B2) boron (see Table 1).