“…During investigation of submicrocrystalline ceramics intra-grain structure of nanocrystalline and microcrystalline HA coatings with equilibrium grain structure [2][3][4][5][6][7][8][9] and of the coatings regions upon nanoindentation [2] growth-induced and strain-induced dislocations in the grains bulk have not been found. Frank dislocations, related to stacking faults in indentation deformed regions of fluorine-substituted HA single crystal have been revealed [1].…”