TRIBOCORROSION RESISTANT CHROMIZED LAYERS PRODUCED ON TOOL STEEL BY MEANS OF THE PACK CEMENTATION PROCESS

摘要

Chromized carbide layers produced on a tool carbon steel surface by means of pack cementation process were investigated. Studies were carried out of layer thicknesses, their morphology, chromium, carbon and iron concentration depth profiles in the diffusion zone of chromized layers. The tribocorrosion resistance of chromized layers was determined. To determine the tribological properties, an Amsler machine of the A135 type was used. The friction unit was disk and plate. Lubrication was provided with a 50% water solution of physiological salt with drip feed of 60 drops/min. High tribocorrosion resistance of the investigated chromized layers was indicated.