Properties of multicomponent surface layers produced on steels by modifiedplasma nitriding processes

New methods for improving the performance properties of surface layers on s teels consists also the modification of the nitriding process. This paper p resents the properties of multicomponent layers produced by glow discharge nitriding process followed by oxidizing, nitriding followed by PACVD techni que carried out in the atmosphere composed of Ti(OC3H7)(4) vapours and by t he electrochemical deposition of chromium on steel combined with the glow d ischarge assisted nitriding. The results of metallographical, X-ray examina tions and the measurements of the corrosion and frictional wear resistance are presented. These treatments essentially improve the properties of nitri ded layers and can be performed in a conventional apparatus designed for gl ow discharge assisted nitriding process during a sole technological operati on. (C) 1999 Elsevier Science Ltd. All rights reserved.