ANALYSIS OF THE BEHAVIOUR OF SOME BINDING SYSTEMS FOR LOCAL PROTECTION AGAINST PLASMA NITRIDING.

Many parts used in the machines manufacturing industry need to present a high hardness value on certain areas and thus need to be subjected to heat treatments or thermochemical treatments such as plasma nitriding, while other areas can be left in their initial hardness state. Since applying plasma nitriding on all surfaces would be needlessly costly, it is necessary to apply a solution for the local protection of the areas that do not require hardening. The authors of the current paper, starting from their previous researches on elaborating special paints or pastes for the local protection of parts against the effects of plasma nitriding, are analysing in this paper the various types of materials that can be used as binding agents in the composition of such paints or pastes, from the point of view of their protection efficiency and their mechanical properties. [ABSTRACT FROM AUTHOR]