固体润滑国家重点实验室（LSL）知识库

There is an increasing need to high temperature solid lubricant materials and techniques for moving system worked at high temperatures. In this study, the nickel alloy matrix composites with solid lubricants of Ag, CaF₂ and MoS₂ were fabricated by hot pressed sintering approach and their tribological properties in air from room temperature to 700 ºC were investigated. Results indicated that the composites exhibited low friction coefficient of 0.16–0.40 and wear rate of (1–29.4)×10⁻⁵ mm³ N⁻¹ m⁻¹. The favorable lubricating properties were attributed to the synergistic effect of the added solid lubricants and the oxide formed in situ on the worn surface.