Abstract

Ga-based liquid metal (GLM) is a promising high temperature lubricant but its lubricating properties still need to be further improved. In this work, the lubrication properties of bismuth doped Ga -base liquid metal in a vacuum environment were studied in a wide temperature range from room temperature (RT) to 600 degrees C, where the selfmated Inconel 625 alloy sliding-pairs were selected. The results indicate that the addition of a small amount of bismuth (0.5 wt%) in GLM can enhance its lubricating performance by suppressing the oxidation of gallium within the temperature range of 200 degrees C to 600 degrees C, thereby decreasing the wear of Inconel 625 alloy.

Keywords Plus：TRIBOLOGICAL PROPERTIES，PERFORMANCE

Published in TRIBOLOGY INTERNATIONAL，Volume195；10.1016/j.triboint.2024.109653，JUL 2024