Nanosheet-structured B4C with high hardness up to 42 GPa
Wang Chang-Chun1, †, Song Le-Le1, 2
       

SEM results of as-synthesized sample, showing (a)–(c) SEM results of B4C prepared at 5.2 GPa for 15 min, with different temperatures of 1800 °C, 2000 °C, 2200 °C, respectively, and (d)–(f) magnified parts of panels (a)–(c), respectively.