Superior mechanical and thermal properties than diamond: Diamond/lonsdaleite biphasic structure

Bo Yang^a, Xianghe Peng^a^,^b^,^*(

), Yinbo Zhao^a, Deqiang Yin^a, Tao Fu^a, Cheng Huang^c^,^**(

)

Fig. 2.. Schematic diagrams of polycrystalline sample of diamond and lonsdaleite mixture. (a-d) diamond/lonsdaleite biphases with four different stacking sequences, with white regions and yellow regions denoting diamond and lonsdaleite (Lon) regions, respectively; (e) <011 > STEM image from Canyon Diablo sample; one of {111} stacking faults, indicated by dotted white line; (f) Structure model of the region marked with white corners in (g) (Reproduced from Ref. [13]); (g) and (h) high angle HAADF-STEM image and annular bright-field STEM image of atomic structure of cBN/wBN biphases (reproduced from Ref. [24]).