In-situ formation of tribofilm with Ti3C2Tx MXene nanoflakes triggers macroscale superlubricity

被引：116

作者：

Yi, Shuang ^{[1
]}

Li, Jinjin ^{[1
]}

Liu, Yanfei ^{[1
]}

Ge, Xiangyu ^{[2
]}

Zhang, Jie ^{[1
]}

Luo, Jianbin ^{[1
]}

机构：

[1] Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China

[2] Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2021年 / 154卷

基金：

中国国家自然科学基金;

关键词：

Ti3C2Tx MXene; Superlubricity; Friction; Tribofilm; TRIBOLOGICAL PROPERTIES; SOLID-LUBRICANT; CARBON; NANOCOMPOSITES; WATER; MOS2; OIL; PERFORMANCE; BEHAVIOR; SURFACE;

D O I：

10.1016/j.triboint.2020.106695

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In the present work, a robust macroscale superlubricity state was achieved with a coefficient of friction (COF) of 0.002 by introducing Ti3C2Tx MXene nanoflakes in glycerol at Si3N4/sapphire interfaces. The MXene-glycerol solution results in the reduction of COF by 96.90% and 97.87% compared to those of pristine glycerol and Ti3C2Tx MXene solutions, respectively. The friction reduction of MXene-glycerol is attributed to the in-situ formation of tribofilm containing Ti3C2Tx MXene nanoflakes and tribochemical layer with Ti3C2Tx MXene on friction pairs, leading to the reduction of shear stress and wear between surface asperities. The synergistic effect between Ti3C2Tx MXene and glycerol enhanced the lubrication performance of Ti3C2Tx MXene, triggering liquidsuperlubricity at the macroscale.

引用

页数：9

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