润滑科技信息平台

Gallium-based liquid metal is a novel lubricant for high-end equipment due to its low friction coefficient and excellent load-carrying capacity. In this work, the stribeck curve, static friction and a series of fixed-speed friction tests for steel self-mated pairs under gallium lubrication are conducted to reveal the lubrication regimes and transition laws. In the sliding speed ranging from 10−8 to 1.4 m/s and the normal load ranging from 2 to 20 N, gallium can only provide boundary and mixed lubrication. Uniformly distributed or island-like distributed gallium-rich films are formed under boundary or mixed lubrication regimes, respectively. The different formation mechanisms are revealed. The failure of the gallium-rich film is mainly related to the average contact stress of the frictional interfaces.

全文链接: https://www.sciencedirect.com/science/article/pii/S0301679X23006266/pdfft?md5=85a7d5bbef42f4326cc5bcb5b8b42a64&pid=1-s2.0-S0301679X23006266-main.pdf

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