“…Moreover, we resonated that the relatively low density of the weak-boron amount discs (BG-B0, BG-B5) could be caused by the formation of a SiO2 insulator layer coating that inhibited the discs from being tightly compressed as well as reduced eddy current. Similarly, Xue Li et al [56] confirmed the formation of the SiO2 insulator layer coating on an SiO2-Fe76Si9,6B8,4P6 amorphous discs after sintering by spark plasma sintering technique. This compaction success has been, according to several works, ensured by technological innovations in the field of SPS consolidation [57,58,59].…”