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Experimental study on the effect of load and rotation speed on dry sliding of silicon nitride

Zhishuang Wang (School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang, China)
Songhua Li (School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang, China and National-Local Joint Engineering Laboratory of NC Machining Equipment and Technology of High-Grade Stone, Shenyang, China)
Jian Sun (School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang, China)
Junhai Wang (School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang, China)
Yonghua Wang (School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang, China)
Zhongxian Xia (School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang, China)
Chao Wei (School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 8 July 2021

Issue publication date: 3 August 2021

131

Abstract

Purpose

The purpose of this study is to investigate the effects of load and rotation speed on dry sliding of silicon nitride, including a series of tribological behaviors (friction coefficient, wear rate, temperature rise, etc.) and wear mechanism. Through the analysis of the above characteristics, the influence law of load and speed on them and the internal relationship between them are determined, and then the best comprehensive performance parameters of silicon nitride full-ceramic spherical plain bearings in dry sliding are predicted, which can provide guidance for the operation condition of silicon nitride full-ceramic spherical plain bearings in dry sliding.

Design/methodology/approach

The experimental study of different loads and rotation speeds under dry friction conditions was carried out by the using ball-disk sliding test method.

Findings

With the increase of load, the friction coefficient of silicon nitride friction pair and the wear rate of silicon nitride ball decrease continuously. With the increase of rotation speed, the friction coefficient of silicon nitride friction pair first increases and then decreases, and the wear of silicon nitride ball first increases and then decreases. With the increase of load and rotation speed, the wear mechanism eventually changes to adhesive wear.

Originality/value

Because of the low timeliness and inefficiency of bearing experiments, this work adopts a simple ball-disk model to comprehensively explore the influence rules of different conditions, which provides a theoretical basis for the subsequent practical application of silicon nitride full-ceramic spherical plain bearings.

Keywords

Acknowledgements

This research was supported by the National Natural Science Foundation of China (No.51975388), the Natural Science Foundation of Liaoning Province (No.2019-MS-266, No.2019-ZD-0666 and No.2020-BS-159).

Citation

Wang, Z., Li, S., Sun, J., Wang, J., Wang, Y., Xia, Z. and Wei, C. (2021), "Experimental study on the effect of load and rotation speed on dry sliding of silicon nitride", Industrial Lubrication and Tribology, Vol. 73 No. 5, pp. 809-816. https://doi.org/10.1108/ILT-03-2021-0070

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

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