PLASMA SURFACE TREATMENTS

This special issue is devoted to surface treatments by plasmas and ion beams. Such treatments are performed in order to increase metallic su rface hardness and resistance to corrosion For polymer surfaces, the p lasma treatments are asked to increase the surface activity before coa ting deposition The plasma treatments are also concerned by surface cl eaning to satisfy to condition of a good coating adhesion. Another cha llenge of plasma treatments is in non polluting process taking some im portance in the next future to replace the existing chemical baths. Co ntrol of plasma treatments is a need in all the step processes from su bstrate surface cleaning to coating deposition. In this issue, the two papers of ''Science'' Section present results on TiCN and TiN coating controlled by emission spectroscopy for the first an performed by ion implantation for the second. The two papers of the ''Industrie'' sect ion discuss on polymer surface adhesion and on ion nitriding/carburizi ng of metal surface.