Effect of loading on the friction and interface microstructure of lubricated steel tribopairs

Authors

Shaogang Cui, University of WollongongFollow
Hongtao Zhu, University of WollongongFollow
Shanhong Wan, University of WollongongFollow
Anh Kiet Tieu, University of WollongongFollow
Bach H. Tran, University of Wollongong
Liping Wang, Chinese Academy of SciencesFollow
Qiang Zhu, University of New South WalesFollow

RIS ID

115420

Publication Details

Cui, S., Zhu, H., Wan, S., Tieu, K., Tran, B. H., Wang, L. & Zhu, Q. (2017). Effect of loading on the friction and interface microstructure of lubricated steel tribopairs. Tribology International, 116 180-191.

Abstract

In this study, the tribological behavior and interfacial evolution of GCr15/Mild steel tribopairs lubricated by inorganic sodium metaphosphate was investigated under different applied loads at 800 °C. The results show that sodium metaphosphate lubricates the contact effectively at the load ranging from 5 to 30 N, with higher loads causing increased friction and wear. A layer of glassy phosphate film formed between the contacts is responsible for the improved tribological performance. FIB/TEM and XRD analysis reveals that the phosphate film was mainly composed of amorphous Na-Fe orthophosphate matrix filled up with fine oxide wear debris.

Grant Number

ARC/DP150103718