In-situ interfacial tribochemistry toward eliminating red-scale of silicon steel in friction process

Authors

Long Wang, University of WollongongFollow
Anh Kiet Tieu, University of WollongongFollow
Guanyu Deng, University of WollongongFollow
Jun Wang, University of WollongongFollow
Hoang Bach Tran, University of WollongongFollow
Hongtao Zhu, University of WollongongFollow
Jun Yang, Chinese Academy Of Sciences

RIS ID

140171

Publication Details

Wang, L., Tieu, A., Deng, G., Wang, J., Tran, B. H., Zhu, H. & Yang, J. (2020). In-situ interfacial tribochemistry toward eliminating red-scale of silicon steel in friction process. Tribology International, 143 106077-1-106077-11.

Abstract

Irregularly striped red-scale defects are often formed on hot rolled silicon steel strips, and some still remain on the surface even after pickling. In this study, an in-situ interfacial tribochemistry concept was proposed to eliminate red-scale silicon steel using ball-on-disc test, by transforming harder eutectic Fe₂SiO₄/FeO eutectic into other compounds with sodium polyphosphate lubricant. The results show that polyphosphate can lubricate the high speed steel/silicon steel interface effectively with significant reduction of the friction and wear by 50% and 90% respectively. And in situ formed compounds of Na₃Fe2(PO4)³ and NaFePO₄ at the rubbing interface can eliminate red-scale on silicon steel by weakening the adhesion of oxide scale to the substrate.

Grant Number

ARC/DP170103173

Grant Number

ARC/LP160101871