How well does gas-nitrocarburisation protect shafts from corrosion?

Corrosion protection of shafts is a particularly relevant topic when a bearing point is not to be lubricated. This is because corroded shafts are not suitable mating partners for a plain bearing. Galvanised shafts are generally not resistant enough in the contact area with the plain bearing. As a possible alternative, igus® has therefore tested gas-nitrocarburised shafts for their corrosion resistance.

In addition to the very good test results of iglidur® G, even lower wear rates were achieved with igutex® TX1 bearings. The salt spray test shows that the gas-nitrocarburised shaft is not significantly protected against corrosion. The gas-nitrocarburised and post-oxidised shaft, on the other hand, shows only very slight traces of corrosion. Even in the contact area of the plain bearings, the corrosion protection is still intact after 120 hours of salt spray testing.