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The tribological properties of bulk Fe2B with pre-oxidation treatment at 750°C in air

Kemin Li (State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an, China)
Zhifu Huang (State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an, China)
Hanwen Ma (State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an, China)
Shaofei Wang (State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an, China)
Chaofeng Qin (State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an, China)
Pengcheng Liu (State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 19 September 2019

Issue publication date: 14 January 2020

149

Abstract

Purpose

The purpose of this study was to investigate the tribological properties of bulk Fe2B with pre-oxidation treatment.

Design/methodology/approach

Bulk Fe2B was oxidized in an electric box furnace with a soaking time of 9 min under 750°C in air. Then, the tribological experiments were carried out on an UMT-Tribolab tester.

Findings

The oxide layer was composed of Fe, Fe2O3, Fe3O4, B2O3 and H3BO3. The oxidative direction of bulk Fe2B was perpendicular to the sample surface. But, the oxidative direction of Fe2B crystals was irregular. At 0.1 m/s, the friction coefficient was the lowest. The effects of shortening the running-in period of friction and reducing the friction coefficient by pre-oxidation treatment at 0.1 m/s were remarkable. Nevertheless, the effect of pre-oxidation treatment was futile at 0.2 m/s. Wear mechanisms of oxidized Fe2B mainly were adhesive and abrasive wear.

Originality/value

The effects of shortening the running-in period of friction and reducing the friction coefficient by pre-oxidation treatment were remarkable.

Keywords

Acknowledgements

This work was supported by the National Natural Science Foundation of China (No.51571159).

Citation

Li, K., Huang, Z., Ma, H., Wang, S., Qin, C. and Liu, P. (2020), "The tribological properties of bulk Fe2B with pre-oxidation treatment at 750°C in air", Industrial Lubrication and Tribology, Vol. 72 No. 1, pp. 151-156. https://doi.org/10.1108/ILT-04-2019-0151

Publisher

:

Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited

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