many deposition systems like PVD, CVD or PE-CVD warrant the reduction or avoid several problems as wear, corrosion, seizing, glueing, reduction of the coefficient of friction on treated surfaces mainly in hot and cold molding and light alloys die-casting.

Some kinds of coatings like TiN, TiCN, TiAlN, CrN, ZrN, Al2O3, K771, MoS2, Diamond, are well suggested in the food industry and in the biomedical sector, in fact they prevent the formation of germs and bacteria on treated surfaces. Furthermore a correct choice of the kind of coating will reduce the production costs strongly. SSA use new technologies of microfilm deposition in order to give the materials features not given by nature. Sandwiches made of different elements obtained through