Electronic structures and mechanical properties of boron and boron-rich crystals (Part 2)

摘要

The second part of this review treats the phase diagram of boron, because of the importance of the material research. A comparison of the phase stabilities of related crystals has been made and deducing general trends among them has been attempted, from which the reader could get useful insights for future development of super hard materials. The mechanical properties of boron and boron-rich crystals are then discussed as the basis of super hard materials. This area is the primary source, from which many controversies arose regarding the strong intericosahedral bonding. Through working on many examples for deformation, consistent interpretations are given.