Shock Synthesis For A New B-C-N Compound

Theory predicts that B-C-N compounds may exist in many structural forms and have excellent physical properties. Synthesis of such materials is attracting the attentions of scientists. In this thesis, a two-stage light-gas gun and the corresponding shock-recovery technology were applied to explore the synthesis conditions of B-C-N compounds of new phase structures under40GPa. XRD、 HRTEM、 ED and XPS analysis showed that all the three precursors of different B-C-N atomic ratio can generate a new dense phase of B-C-N compounds in the processes of strong shock-loading conditions of40GPa. Single crystals of60nm size are directly observed in the recovery sample. The new B-C-N compound of such structure has not been reported in the literature before, therefore, this discovery is of significance for exploring the new structures of B-C-N compounds and the synthesis condition in future, meanwhile, a new structures of B-C-N compounds is waiting to be studied by the theoretical researchers.