Study on Lubrication and Friction Reduction Properties of ZIF-8 Nanoparticles as Si3N4 Ceramic Water Lubrication Additives

Abstract

Ceramics can achieve superlubricity under water lubrication; however, their running-in period is long and application is rather limited by wear limit. Thus, zeolite imidazole ester skeleton (ZIF), an important branch of metal organic framework materials (MOFs), is expected to improve the tribological properties of lubricants and associated additives. As such, it has broad application prospects within the field. In this paper, ZIF-8 nanoparticles of varying concentrations were prepared and linked with amino functional groups. Specimens were used in silicon nitride self-matching pairs and their tribological properties were observed. After the experiment, friction surfaces were analyzed by scanning electron microscope (SEM), energy dispersive spectrometer (EDS), and Fourier transform infrared radiation (FTIR). The experimental results have shown that ZIF-8 nanoparticles greatly reduced both friction and wear. Comprehensively considering running-in time, average COF during the whole process and smooth friction period COF, optimal performance was obtained for the ZIF-8 nanoparticle solution concentration of 1wt%. Furthermore, it was concluded that the lubrication properties of amino-modified ZIF-8 nanoparticles are significantly better compared to that of the unmodified ZIF-8. The anti-friction mechanism of ZIF-8 as a ceramic water lubrication additive was mainly through the filling and forming of nanoparticle film on the ceramic surface.

Recent advances in metal–organic frameworks for lubrication

“…Due to the easily adjustable surface properties, MOFs also have great potential as water-based lubrication additives. Sui et al 78 prepared amino modified ZIF-8 nanoparticles, which showed good lubrication performance as water lubrication additives. In order to improve the stability of ZIF-8 in water, Song et al 79 prepared ZIF-8 coated with polydopamine(PDA).…”

A review of solid lubrication based on polyurethane composites

“…Zeolitic Imidazolate Framework-8 (ZIF-8), as a classical MOFs material, has anti-friction and -wear effects. [97] The tribological mechanism includes two aspects during the sliding process:…”

“…Zeolitic Imidazolate Framework‐8 (ZIF‐8), as a classical MOFs material, has anti‐friction and ‐wear effects. [ 97 ] The tribological mechanism includes two aspects during the sliding process: One is that ZIF‐8 has a zeolite imidazolium salt skeleton structure, which can partly convert sliding friction into rolling friction to disperse the pressure on the material surface; another is that the porous structure gives ZIF‐8 excellent adsorption between reaction products and contact surface for forming a stable protective layer, [ 98 ] which can dynamically fill and repair the PU matrix.…”

Unraveling Water-Based Lubrication with Carbon Dots of Asphaltene Origin

“…4 To address this issue, additives are commonly incorporated into water-based lubricants to enhance their friction and wear characteristics. Currently researched nanoadditives in this regard include nanosilica, 8−10 nano-TiO 2 , 11 carbon dots, 12 nano-PEG, 13 amine-functionalized ZIF, 14 and graphene-based nanomaterials. 15 Among carbon-based nanoadditives for water-based lubrication, graphene-based nanomaterials (e.g., graphene oxide, reduced graphene oxide, graphene quantum dots) have been extensively investigated.…”