Multi-layer Ti3C2Tx-nanoparticles (MXenes) as solid lubricants – Role of surface terminations and intercalated water

By A. Rosenkranz, P. Grützmacher, R. Espinoza, V. Fuenzalida, E. Blanco, N. Escalona, F. Gracia, R. Villarroel, Liangchao Guo, Ruiyang Kang and 3 more. Applications of Surface Science, 2019

170 citations recorded by the source corpus.

Abstract MXenes, a new class of 2-dimensional materials, and in particular Ti3C2Tx-nanoparticles, have attracted considerable attention in energy storage and catalysis lately. Despite having a weakly-bounded multi-layered structure with self-lubricating ability, the usage of MXenes for tribological purposes is surprisingly underexplored. Here, we address for the first time the influence of surface terminations and intercalated water in Ti3C2Tx-nanoparticles on friction and wear when used as a solid lubricant. Ball-on-disk experiments at 4% relative humidity reveal excellent tribological properties of these Ti3C2Tx-nanoparticles with a remarkable friction reduction of about 300% coupled with the potential to greatly reduce adhesive, abrasive and tribo-chemical wear. Advanced, complementary materials' characterisation underlines the significant influence of surface terminations and intercalated water, defining them as key parameters to tailor the resulting frictional performance. Consequently, our results highlight Ti3C2Tx-nanoparticles as outstanding, next-generation solid lubricants in nano- and micro-scale systems.

Subfields: Materials Chemistry, Mechanics of Materials

View Paper: https://www.semanticscholar.org/paper/736dfe884b4b13672feba7340eb129f4fd31fe0e

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In Materials Chemistry

1. Ashlie Martini
2. A. Rosenkranz
3. Mehmet Baykara
4. H. Costa

In Mechanics of Materials

1. A. Rosenkranz
2. Mehmet Baykara
3. Ashlie Martini
4. H. Costa

Citations in the corpus

• Synergetic effects of surface texturing and solid lubricants to tailor friction and wear – A review (2021, background): “While their lubricious properties by themselves [147-149] or as part of composite coatings [150-153] have been studied on the macroscopic scale, AFM studies have recently quantified the nanoscale solid lubrication achieved by individual Ti3C2TX nanosheets (Figure 6) [154] and demonstrated the temper”