Abstract
The aim of the present work is to determine the influence of surface layers with boron and engine oil on the processes of friction and wear in friction pairs. The ring samples with a borided surface layer cooperated under test conditions with counterparts made with CuPb30 bearing alloy. During the tests, the friction pairs were lubricated with 15W/40 Lotos mineral oil and 5W/40 Lotos synthetic oil. The friction pairs lubricated by Lotos synthetic oil a generate stronger friction force and higher temperature in the contact area of friction pairs, as compared to the pairs lubricated by Lotos mineral oil. Lubrication of the friction pairs by mineral oil in the start-up phase causes faster stabilization of the friction conditions than in the case of lubrication by synthetic oil. The wear of bearing alloy was lower when lubricated by Lotos mineral oil than by Lotos synthetic oil. The process of friction in the contact area of the friction pair leads to the destruction of the lubricant and the reduction of its operational properties, especially at high temperatures.
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