Working Temperature Effect of A-C: H/A-C: H and Steel/Steel Contacts on Tribo Properties in Presence of Sunflower Oil as a Bio Lubricant

DLC coating is very efficient to improve the tribological characteristics of any material. It has numerous applications in mechanical, electrical, tribological, biomedical and optical field. Severe friction and wear in some machine parts consume a lot of energy which makes the process energy inefficient. Thus, Diamond like carbon (DLC) coating can be an effective way to lower the friction and wear rate. Working condition of DLC coated parts affect the tribological characteristics, such as temperature, sliding speed and load, relative humidity, counter surface and lubrication media. Only temperature effect of DLC/DLC and steel/steel contacts on tribology is shown in this paper. Three temperatures are chosen such as 75 °C, 85 °C and 100 °C. It has been found that friction and wear characteristics in 75 °C, and 85 °C is similar to steel/steel and DLC/DLC contacts. However, significant change is observed in 100 °C for DLC/DLC contact compared to steel/steel contact.