Kasar Ashish K, Jose Subin Antony, D'Souza Brian, Menezes Pradeep L
Department of Mechanical Engineering, University of Nevada, Reno, NV 89557, USA.
Materials (Basel). 2024 Jul 12;17(14):3448. doi: 10.3390/ma17143448.
Porous materials have recently attracted significant attention in the aerospace and biomedical fields for addressing issues related to friction and wear. Porous materials are beneficial in applications where continuous lubrication is not feasible or for components that operate under extreme conditions, such as high speeds, elevated temperatures, and heavy loads. The pores can serve as reservoirs for liquid lubricants, which are gradually released during the operation of the components. The tribological properties of these materials depend on their porosity, the lubricants used, and any additional additives incorporated into the porous materials. This review article provides insight into common fabrication techniques for porous materials and examines their tribological performance for all three classes of materials-polymers, metals, and ceramics. Additionally, it discusses design criteria for porous self-lubricating materials by highlighting the critical properties of both the substrate and lubricants.
多孔材料最近在航空航天和生物医学领域引起了极大关注，用于解决与摩擦和磨损相关的问题。多孔材料在无法进行连续润滑的应用中或在极端条件下运行的部件（如高速、高温和重载）中是有益的。孔隙可作为液体润滑剂的储存库，在部件运行过程中逐渐释放。这些材料的摩擦学性能取决于它们的孔隙率、所使用的润滑剂以及添加到多孔材料中的任何其他添加剂。这篇综述文章深入探讨了多孔材料的常见制造技术，并研究了这三类材料（聚合物、金属和陶瓷）的摩擦学性能。此外，它通过强调基材和润滑剂的关键特性，讨论了多孔自润滑材料的设计标准。
