The atomic structure of twin boundaries which were formed by the β > α phase transformation in sintered material was deduced from high-resolution transmission electron microscopic images. The zones of bad matching consisted of 30º Shockley partials which were partly combined.

Atomic Structure of the Grain Boundary in α-SiC. C.Ragaru, M.Lancin, J.Thibault: Materials Science Forum, 1999, 294-296, 285-8