The Influence of Low Melting Elements (Pb, Bi, Cd, In) on Tribological Properties of Al–Si–Cu Alloys

Resumo

This paper discusses tribological tests and microscopy studies of experimental Al–Si–Cu alloys with low-melting dopants (Bi, Cd, In, Pb in amounts up to 1%). Scoring resistance and wear resistance were studied. Sclerometry was performed using a spherical indenter under normal conditions at 90°C. Wear was evaluated without lubrication by block-on-ring tests. The topography and chemical composition of selected surfaces were studied using a scanning electron microscope before and after tests. Comparative analysis of experimental results and microscopy is presented.