标题：Electron energy loss spectroscopy analysis for cubic boron nitride single crystals transition mechanism in Li3N-BN system
作者：Lv, Meizhe ;Xu, Bin ;Guo, Xiaofei ;Cai, Lichao ;Yuan, Xingdong
作者机构：[Lv, Meizhe ;Cai, Lichao ] School of Materials Science and Engineering, Shandong University, Jinan; 250101, China;[Xu, Bin ;Guo, Xiaofei ;Yuan, Xingdo 更多
摘要：Cubic boron nitride (c-BN) single crystals were synthesized in Li3N-BN system. The variation of sp2:sp3 ratio from boron K-edges in different interfacial layers covering on as-grown c-BN single crystals was investigated by electron energy loss spectroscopy. The sp3 fractions from the outer to the inner layers exhibit an increasing trend, correspondingly, the sp2 fractions decrease gradually. The fractions of sp3-bonded BN from the outer to the inner are 10.36%, 11.55%, and 16.67%, respectively. The main phases in the synthesized interfacial powders are confined as c-BN, h-BN microcrystals. On the basis of our findings, it is concluded that c-BN could be transformed from h-BN directly and the catalysis of Li3BN2 was analyzed briefly.
© 2019 The Author(s)