Quick ultra-low friction in ceramics induced by high-strength nano surface film

IF 5.3 1区工程技术 Q1 ENGINEERING, MECHANICAL

Wear Pub Date : 2025-03-31 DOI:10.1016/j.wear.2025.206061

Jinlu Li , Tianyi Sui , Haolin Li , Feifei Zhao , Xuan Bao , Guochen Ning , Yuan Zhang , Jingtao Wang , Bin Lin

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引用次数: 0

Abstract

Serious wear during running-in period significantly limited the application of ceramics in industry. With poor activity, ceramic contact surface is hard to be protected during friction. In this study, ceramics tribological properties are significantly enhanced and ultra-low friction is achieved in short time by formation of high-strength nano surface film. Copper nanoparticles with linear and cubic morphologies were synthesized and dispersed into water-based lubricants for silicon nitride ceramic friction pairs. A 1:1 mixture of copper nanoparticles with linear and cubic morphologies exhibits the best lubrication performance at an optimal concentration of 0.2 wt%. The result shows an 87.01 % reduction in the coefficient of friction, and a wear rate of 0.18 % of that obtained in the case of deionized water. High-strength protective film is found generated on the ceramic surface, which reduces wear and promotes the forming process of ultra-smooth surface to achieve ultra-low friction. Based on the characterization results, lubrication mechanism is elucidated, quick generation of surface film with high strength is the essential for reducing wear and running-in period.

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来源期刊

Wear 工程技术-材料科学：综合

CiteScore

8.80

自引率

8.00%

发文量

280

审稿时长

47 days

期刊介绍： Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.