采用无定形B粉为主要原料、Fe2O3为催化剂,通过添加一定比例的生长助剂CaO,在氨气气氛下合成出氮化硼纳米管(BNNTs),结果表明:合成出的纳米管为多壁氮化硼纳米管(MWBNNTs),长度在数微米范围;CaO的加入使原料在高温下部分形成液相,促进B原子在催化原子Fe原子周围的聚集,并与NH3中的氮原子结合,最终形成BNNTs。 Adopting amorphous B powder as main raw material and Fe2O3 as catalyst, boron nitride nanotubes (BNNTs) were synthesized by adding a certain proportion of growth assistant CaO. The results showed that the synthesized nanotubes were multi-wall Boron nitride nanotubes (MWBNNTs), the length of a few microns in the range; CaO join the raw material at high temperature to form part of the liquid phase, to promote the B atom in the catalytic atom Fe atoms around the aggregation and NH3 in nitrogen atoms eventually Formation of BNNTs.