氧化铝层状自润滑复合陶瓷的宏/微观结构设计及性能调控

Optimization Design of Macro/micro Structures and Properties of Alumina Laminated Self-lubricated Composite Ceramic

自润滑复合陶瓷是极端环境服役运动部件的最佳候选材料之一,其中仿生层状结构自润滑复合陶瓷由于具有优异的综合性能而倍受人们的青睐。基于宏/微观结构设计是实现其结构/润滑功能一体化和可靠性提升的关键。本文结合作者所在课题组的相关工作,综述了层状结构几何参数和界面微结构、参数与组分对氧化铝层状自润滑复合陶瓷力学性能、摩擦学性能和服役可靠性的影响规律及作用机制,并提出了层状自润滑复合陶瓷的结构与界面优化设计准则,以期指导自润滑复合陶瓷性能提升和推动其在高技术装备中的应用。

Self-lubricated composite ceramics are potential candidates for the application of wear-resistance components in extreme environments.Bionic laminated self-lubricated composites are highly attractive materials because of their excellent overall performance.Optimization designs of macro/micro structures of them are key paths to achieve the integration of structure-lubricating function and improvement of reliability.In this overview,the influence rule and mechanisms of structural parameters of layered structures and morphology,geometric parameters and compositions of interfaces on the mechanical and tribological properties of alumina laminated composites were reviewed based our previous researches.These have guiding significance for the performance improvement of the self-lubricating ceramic composites and promoting its application in high-tech equipment.