Li Mingmao, Yin Ningkang, Jei Zhaokui, Liu Zhiying, Zhang Jinhan, Zeng Hao, Huang Hao, Liu Jingxuan
Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China.
Jiangxi Hongda Self Lubricating Bearing Co., Ltd., Yingtan 335425, China.
Materials (Basel). 2025 Jan 26;18(3):560. doi: 10.3390/ma18030560.
The copper-based steel backing material is prepared using a combination of mechanical alloying and secondary sintering methods. The effect of YO content on the microstructure, hardness, and tribological properties of the copper-based self-lubricating layer is investigated. The results demonstrate that the addition of YO enhances the strength of the copper-based self-lubricating layer. Graphite and YO act synergistically to form a three-dimensional supporting framework, thereby boosting the overall strength of the copper-based composite material and increasing its Brinell hardness by 27%. Additionally, the incorporation of YO effectively improves the tribological properties of the composite material, significantly reducing wear during the friction process and decreasing the wear rate by 77%. Under the experimental conditions, the optimal YO content is determined to be 1 wt%.
铜基钢背材料采用机械合金化和二次烧结相结合的方法制备。研究了YO含量对铜基自润滑层的微观结构、硬度和摩擦学性能的影响。结果表明，YO的添加增强了铜基自润滑层的强度。石墨和YO协同作用形成三维支撑骨架，从而提高了铜基复合材料的整体强度，并使其布氏硬度提高了27%。此外，YO的加入有效改善了复合材料的摩擦学性能，显著减少了摩擦过程中的磨损，磨损率降低了77%。在实验条件下，确定最佳YO含量为1 wt%。
