Abstract
The article presents research on the wear between the bearing and journal surfaces. The investigation was done for two types of layers obtained by: laser drilling of EN-GJS-600 ductile cast iron and gas nitriding of 38 HMJ steel. Wear rates were defined on the base of comparison of surface layer profiles before and after the wear test. Comparing test results it was found that the biggest differences of the surface roughness parameter were obtained for gas nitrided specimens (ε + γ`+ α) while the smallest differences for the laser drilled ones. Moreover the surface layer of specimens was evaluated with the usage of microhardness measurements. The surface of the drilled specimens was characterized with the constant value for the melt layer. At the end of the paper findings of the research were summarized and the conclusions were drawn.
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