Towards direct superlubricity and superlow wear via amino modification of polyhydroxy alcohol solutions
作者机构：State Key Laboratory of Solidification ProcessingCenter of Advanced Lubrication and Seal MaterialsNorthwestern Polytechnical UniversityXi'an 710072China Chongqing Innovation CenterNorthwestern Polytechnical UniversityChongqing 401135China Research&Development Institute of Northwestern Polytechnical University in ShenzhenShenzhen 518063China
出 版 物：《Friction》 (摩擦（英文版）)
年 卷 期：2024年第12卷第9期
页 面：1980-1990页
核心收录：
学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程]
基 金：the National Key R&D Program of China(No.2022YFB3809000) Natural Science Foundation of Chongqing,China(No.2023NSCQ-MSX3029) the Guangdong Basic and Applied Basic Research Foundation(No.2022A1515111005) the Fundamental Research Funds for the Central Universities of China(No.G2022KY05108)
主 题：direct superlubricity amino modification molecular layer superlow wear
摘 要：Friction remains as the primary mode of energy dissipation and components wear,and achieving superlubricity shows high promise in energy conservation and lifetime wear *** results in this work demonstrate that direct superlubricity combined with superlow wear can be realized for steel/Si_(3)N_(4)contacts on engineering scale when polyhydroxy alcohol solution was selectively modified by amino *** direct superlubricity occurs because 3-amino-1,2-propanediol molecules at the friction interface could be induced to rotate and adsorb vertically on the friction surface,forming in-situ thick and dense molecular films to passivate the asperity ***,amino modification is also conducive to improving the lubrication state from boundary to mixed lubrication regime by strengthening the intermolecular hydrogen bonding interaction,presenting enhanced load-bearing capability and reduced direct solid asperity ***,direct superlow average friction of 0.01 combined with superlow wear are achieved *** design principle of direct superlubricity and superlow wear in this work indeed offers an effective strategy to fundamentally improve energy efficiency and provide lifetime wear protection for moving mechanical assemblies.
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