The reliable operation of advanced industrial tribo-systems depends on solid-lubricating composites with excellent tribological performances over a wide temperature range. Here, we introduce the CoCrFeNiAl high-entropy alloy matrix solid-lubricating composites that exhibit outstanding wear-resistant and friction-reduced properties at temperature from room temperature to 800 °C. The formation of lamellar h-BN and Ag tribo-film inhibits the three-body abrasion and oxidative wear of the frictional interface below 600 °C, so that both the coefficient of friction and the wear of the composites are low. At 600 °C, high temperature softening of the composites increases its wear. At 800 °C, a protective oxide layer form on the worn surface of the composites, contributing to the low wear.

先进的工业摩擦系统的可靠运行取决于在宽温度范围内具有出色摩擦学性能的固体润滑复合材料。在这里，我们介绍CoCrFeNiAl高熵合金基体固体润滑复合材料，该复合材料在室温至800°C的温度下均具有出色的耐磨性和降低摩擦性能。在低于600°C时，层状h-BN和Ag摩擦膜的形成抑制了摩擦界面的三体磨损和氧化磨损，因此复合材料的摩擦系数和磨损均很低。在600°C时，复合材料的高温软化会增加其磨损。在800°C时，复合材料的磨损表面会形成保护性氧化层，有助于降低磨损。