Tribological gain enabled by the synergy of copper nanoparticles and friction induced in situ tribo-click reaction

Abstract

The tribochemical reactions generated at the relative motion interface are considered to have a positive or negative effect on the performance when lubricating materials were in service. Obviously, these tribochemical...

Fortified Lubricating Response to Sustainable PEG System from Protic Ionic Liquid and Their Strong Hydrogen Bonding Network

“…On the other hand, the mechanical heat and force generated during friction may lead to the electrons overflow from the metal surface, which makes the surface positively charged, enabling the combination with the ILs anion part through electrostatic interaction. 56 Meanwhile, a bright area can be observed on the left side of the C 5 H 9 NO 2 S − and [Fe(C 9 H 18 NO 2 S)] + fragment mapping, which also confirms that the anionic portion is more widely distributed at this location. The TOF-SIMS mapping data of ILs-PEG200 strongly prove that the effective adsorption of anions at the interface is the basis for efficient lubrication.…”

“…This may be attributed to the empty d-orbitals of Fe metal by coordination in the rubbing process. On the other hand, the mechanical heat and force generated during friction may lead to the electrons overflow from the metal surface, which makes the surface positively charged, enabling the combination with the ILs anion part through electrostatic interaction . Meanwhile, a bright area can be observed on the left side of the C 5 H 9 NO 2 S – and [Fe(C 9 H 18 NO 2 S)] + fragment mapping, which also confirms that the anionic portion is more widely distributed at this location.…”

Enhanced lubrication and photothermal conversion via dynamically reversible supramolecular oil gels filled with MXene@mGLM composites

“…Aer loading with mGLM, the (002) peak shied to a smaller angle, indicating that MXene@mGLM still maintained a good layered structure, and mGLM expanded the This journal is © The Royal Society of Chemistry 2024 interlayer distance of MXene nanosheets. 20,34 The chemical valence states of the elements on MXene@mGLM were measured by XPS. As can be seen from the full spectrum in Fig.…”

“…In order to address this challenge, MXene based composites are gradually favored by researchers. In general, loading low-dimensional nanoparticles, such as SiO 2 , 19 nanocopper, 20 TiO 2 (ref. 21) and so on, onto MXenes can not only compensate for the shortcomings of MXenes, but also cooperate with multiple lubrication mechanisms to reveal superior tribological properties.…”