Analysis of Surface Coarseness for Friction Node of Alloy AlSi17Cu5 and Cast-Iron EN-GJL-350

The article presents the surface coarseness analysis for alloy AlSi17Cu5Mg coupled with cast-iron EN-GJL-350. Material after friction was tested in pin-on-disk system with the use of tribological tester T-01. Such coupling is in accordance with parameters applied in combustion engines. Analysis of coarseness allows to determine the influence of technological history on the parameters of material wear. It is important due to the fact of the proper choice of technology for manufacturing the materials applied in pistons of combustion engines. Tests were conducted in accordance with norm PN-ISO 4288:1988.