Abstract
The interaction of transmission oils based on pentaerythritol esters and organosiloxane liquids with a surface of AISI 420S steel was studied. It was found that during friction, the lubricant interacts with the iron of the steel surface, resulting in the formation of protective surface films of sulfur and silicon compounds. The features of formation of protective surface films during friction with lubricants based on pentaerythritol esters and organosiloxane liquids are determined. It is noted that the formation of protective films when using a lubricant composition of pentaerythritol esters occurs with the participation of nonoxidized iron, and when using organosiloxane liquids with the participation of iron oxide, the main element of the metal counterbody.
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