Tribological behavior of sliding contact with olive oil lubrication under high temperature condition

Abstract

Olive oil is widely used for its easy availability, biodegradability, and environmental friendliness. It is a good potential candidate for green lubrication performance. However, lack of research on the tribological behavior of sliding contact under high-temperature conditions limits its use in high-temperature lubrication. To gain a deeper comprehension of how olive oil lubricates under high-temperature settings, an equipped friction testing apparatus with temperature regulation capabilities was utilized for a thorough investigation. Testing results show that high-temperature olive oil lubrication can be divided into four stages: start-up lubrication stage, steady lubrication stage, transition lubrication stage, and lubrication failure stage (dry friction). The material wear mechanisms under olive oil lubrication at high temperatures mainly include abrasive wear, adhesive wear, fatigue wear, oxidation wear. The effects of olive oil under high-temperature conditions, including load, speed, and temperature, were further discussed.Its reveals the lubrication mechanism of olive oil under high-temperature sliding contact conditions.