Scuffing evaluation of fully formulated environmentally acceptable lubricant using barrel-on-disc technique

摘要

Scuffing evaluation is challenging due to the catastrophic nature of this failure mode. In this paper, a new scuffing test method was designed for evaluating the scuffing capacity of fully formulated industrial oils. A barrel-on-disc technique was employed in which the specimens are moving in opposite direction under rolling-sliding conditions. The maximum Hertzian pressure could reach up to 3.06 GPa, and the test plan was a combination of increasing-sliding speed and increasing-load steps. Furthermore, the tribofilm evolution was captured using Spacer Layer Interferometry Method (SLIM), and the correlation of tribofilm and micro-scuffing/ scuffing was presented. Results revealed the difference between the scuffing capacity of Environmentally Acceptable Lubricants and the Mineral oils which had the same scuffing capacity in their datasheet.