Tribofilms generated from bulk polyphosphate glasses at elevated temperatures

Authors

Ning Kong, University of WollongongFollow
A Kiet Tieu, University of WollongongFollow
Qiang Zhu, University of WollongongFollow
Hongtao Zhu, University of WollongongFollow
Shanhong Wan, University of WollongongFollow
Charlie Kong, University of New South Wales

RIS ID

102118

Publication Details

Kong, N., Tieu, A. Kiet., Zhu, Q., Zhu, H., Wan, S. & Kong, C. (2015). Tribofilms generated from bulk polyphosphate glasses at elevated temperatures. Wear, 330-331 230-238.

Abstract

In this study polyphosphate lubricant was introduced into steel rolling process. The friction coefficient reduced from 0.463 to 0.238 by the presence of polyphosphate lubricant as compared with unlubricated condition, calculated from 2-high Hille 100 rolling mill tests. A tribofilm of similar to 100 nm can be observed on the strip surface, greatly improving the surface finish. This tribofilm well adhered on the oxide layer/steel base by the interfacial reactions. Laser-scanning confocal microscope well confirmed the reactions of polyphosphate lubricant with the oxide scales occurring. Furthermore, a feasible mechanism the composition and structure of this lubricant during thermal reaction was proposed when exposed to different temperatures. (C) 2015 Elsevier B.V. All rights reserved.