Effect of powder lubrication on wear characteristics of silicon nitride during sliding at high temperature

Zhishuang Wang; Songhua Li; Jian Sun; Junhai Wang; Lixiu Zhang; Chao Wei; Zhongxian Xia; Xinyi Zhang; Jiaxing Yang

doi:10.1088/2053-1591/ac62b7

Materials Research Express (Jan 2022)

Effect of powder lubrication on wear characteristics of silicon nitride during sliding at high temperature

Zhishuang Wang,
Songhua Li,
Jian Sun,
Junhai Wang,
Lixiu Zhang,
Chao Wei,
Zhongxian Xia,
Xinyi Zhang,
Jiaxing Yang

Affiliations

Zhishuang Wang: ORCiD; School of Mechanical Engineering, Shenyang Jianzhu University , Shenyang 110168, People’s Republic of China
Songhua Li: School of Mechanical Engineering, Shenyang Jianzhu University , Shenyang 110168, People’s Republic of China; National-Local Joint Engineering Laboratory of NC Machining Equipment and Technology of High-Grade Stone, Shenyang 110168, People’s Republic of China
Jian Sun: School of Mechanical Engineering, Shenyang Jianzhu University , Shenyang 110168, People’s Republic of China; School of Mechanical Engineering, Tsinghua University , Beijing 100084, People’s Republic of China
Junhai Wang: ORCiD; School of Mechanical Engineering, Shenyang Jianzhu University , Shenyang 110168, People’s Republic of China
Lixiu Zhang: School of Mechanical Engineering, Shenyang Jianzhu University , Shenyang 110168, People’s Republic of China
Chao Wei: School of Mechanical Engineering, Shenyang Jianzhu University , Shenyang 110168, People’s Republic of China
Zhongxian Xia: School of Mechanical Engineering, Shenyang Jianzhu University , Shenyang 110168, People’s Republic of China
Xinyi Zhang: School of Mechanical Engineering, Shenyang Jianzhu University , Shenyang 110168, People’s Republic of China
Jiaxing Yang: School of Mechanical Engineering, Shenyang Jianzhu University , Shenyang 110168, People’s Republic of China

DOI: https://doi.org/10.1088/2053-1591/ac62b7
Journal volume & issue: Vol. 9, no. 4
p. 046403

Abstract

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In order to improve the tribological characteristics of Si _3 N _4 friction pairs at high temperature, graphite powder, h-BN powder and MoS _2 powder with excellent lubricating properties were added between the friction pairs. The friction and wear experiments of different powder adding stages (initial adding stage and stable friction stage) and different temperature gradients (25 °C, 100 °C, 200 °C, 300 °C, 400 °C) were carried out on the friction and wear tester. After the experiment, the worn surface was observed by SEM and ultra-depth microscope, and the lubricating powder before and after friction was analyzed by XRD. Combined with the friction coefficient recorded during the experiment, the friction reduction mechanism of powder lubrication under different conditions was analyzed and summarized. The results show that the three kinds of powder all have the best lubrication effect at the initial stage of addition. With the increase of temperature, the film-forming ability of graphite powder and h-BN powder decreases, and MoS _2 powder is little affected. Therefore, the key to lubrication and wear reduction is to form a dense, stable and not easily damaged lubricating film during friction. How to form the lubricating film more easily and how to improve the performance of the lubricating film will become the next research focus.

Published in Materials Research Express

ISSN: 2053-1591 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials; Technology: Chemical technology
Website: https://iopscience.iop.org/journal/2053-1591

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