Amorphous BCN was prepared by ball milling the mixture of graphite and hexagonal BN for 120h,and then annealed for 45 min. at 1600K under 4.5GPa.

• 将石墨和六方氮化硼(h_BN)混合粉球磨120h形成的非晶B-C-N粉在4.；5GPa；1600K等温退火45min