THE IMPACT OF THROUGH POROSITY OF ZIRCONIUM NITRIDE (ZrN) PVD-COATING ON THE CORROSION RESISTANCE OF SPHERICAL BACKINGS MADE OF ШХ15 STEEL
The porosity and corrosion resistance of rolling elements, strengthened by PVD -coated ZrN of different thicknesses have been investigated to study the impact of vacuum coatings on the performance of rolling bearings. The results of the influence of parameters of the vacuum-plasma deposition process on through porosity of produced coatings are received. The comparative laboratory tests also revealed the influence of ZrN coating on the rate of formation of first corrosion centers and their qualitative and quantitative characteristics.