Insight into macroscale superlubricity triggered by neutral NaH2PO2 aqueous
收藏中国科学院兰州化学物理研究所科学数据中心2025-12-09 更新2026-01-10 收录
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This study develops a novel superlubrication system based on neutral NaH2PO2 solution between Si3N4 and Ni-P coatings. The topography evolution of the worn region reveals the polishing effect caused by tribochemistry, which also leads to the formation of reaction films on the wear surface. Simulations show that Na+ and H2PO2 - ions, encapsulated by water molecules, are intensely adsorbed onto the wear surfaces due to the numerous Ni-O, -OH, P-O, and Si-O bonds in the reaction film, resulting in hydration superlubricity. This system facilitates robust superlubricity under varying normal loads (3–10 N) and sliding velocities (0.078–1.042 m/s). Given the widespread use of Ni-P coatings and the minimal environmental footprint of NaH2PO2, this superlubrication system offers considerable potential for industrial use.
提供机构：
中国科学院兰州化学物理研究所科学数据中心
创建时间：
2025-12-09
