Tribocorrosion of a chromosiliconized layer

The paper presents the results of an experiment investigating the tribocorrosion of C45 steel samples which were chromosiliconized by the powder-pack method. The technological process was carried out at 1000oC for 6 hours. The layer was produced with the use of ferrochromium powder combined with SiC, kaolin and ammonium chloride. Analytical samples were placed in boxes containing the powder mix, and the boxes were sealed with vitreous enamel. The frictional resistance of a chromosiliconized layer was investigated under exposure to a corrosive medium of sugar slurry. Corrosion damage was examined with the use of a three-cylinder and cone wear tester. The structure of the analyzed layers was evaluated by light and scanning microscopy, X-ray diffraction and glow discharge optical emission spectroscopy (GDOES). The thickness, surface roughness and hardness of samples were determined. Chromosiliconizing of C45 steel samples extended the life of friction elements in a sugar slurry environment.