Coincidence Lattices and Quasilattices for Icosahedral Quasicrystals

The theory of CSL and DSC has been applied for grain boundaries of quasicrystals. Particular features of special grain boundaries of quasicrystals are underlined. The Frank–Rodrigues representation of rotations is used to classify disorientations and to find the degeneracy of different values of the coincidence index.