The invention concerns a method for coating a support (10) comprising a first material with a coating layer comprising a second material, including at least a phase (A, A′) for deposition of a layer of given thickness of coherent material (11, 13) on the support surface during which the interaction between an ion source and a plasma is used. The invention is characterized in that each phase (A, A′) of material deposition is followed by a phase (B, B′) for exposure of the support and the deposited layer of material (11, 13) to a pulse of limited duration of an ionic bombardment with high energy density of selected energy density level.