高超声速飞行器和核电等战略新兴产业的快速发展，迫切需要解决1000℃以上高温固体润滑材料的“卡脖子”问题。本项目拟选择熔点高、高温力学性能和高温抗氧化性能优异的多相Mo-Si-B合金作为高温基体，通过自润滑性能调控、高强耐磨一体化设计、复配高温润滑相以及工艺参数优化，采用放电等离子烧结方法制备在1000℃以上具有优良抗磨润滑性能的Mo-Si-B合金基高温固体润滑复合材料。系统研究复合材料的高温组织结构演变、高温力学性能和摩擦学性能及其相互影响，揭示复合材料的结构与性能的内在关联和作用机制，阐明其磨损失效机制和高温润滑机理，为解决1000℃以上高温润滑与抗磨问题提供技术保障。

There is an increasing need for developing a high-temperature solid-lubricating composite to overcome the severe friction and wear problems above 1000℃ with the rapid development of strategic emerging industries including hypersonic aircraft and nuclear power. Owing to the high melting point, excellent high temperature mechanical properties and oxidation resistance, the multiphase Mo-Si-B alloy was selected as the matrix. By regulating the self-lubricity, designing of high strength integrated with excellent wear resistance, doping with the high temperature solid lubricants and optimizing the processing parameters, the Mo-Si-B alloy matrix high-temperature solid-lubricating composite which processes excellent anti-wear and lubricating properties above 1000℃ would be fabricated by spark plasma sintering. The relationships between phase constituent, microstructure, high temperature mechanical properties and tribological properties would be systemically investigated, and the intrinsic relation and interactive mechanism between microstructure and properties was revealed. Besides, the wear mechanism as well as the lubricating effects would be illustrated, which can provide a technical support for solving practical application problems on high temperature lubrication and wear resistance above 1000℃.