What type of MXenes can be a good solid lubricant?
(1) Mono transition Metal based
(2) Double transition metal
Dear Muhammad Chhattal, I think titanium based MXene are the most promising once. My Regards
https://cen.acs.org/materials/2-d-materials/MXenes-make-durable-solid-lubricants/99/web/2021/04
Newly emerging Ti3C2Tx–nanosheets (MXenes) have attracted considerable attention in energy storage, catalysis and, more recently, tribology. MXene nanosheets are characterized by a weakly-bonded multi-layered structure with self-lubricating ability, making them a suitable candidate for solid lubrication. This contribution aims at addressing for the first time their application in higher loaded steel/steel dry sliding contacts by investigating the influence of contact pressure and relative humidity on friction and wear performance. Compared to the uncoated reference, a 2.3-fold friction reduction and a 2.7-fold reduction of the wear volume were verified for MXene-coated specimens for moderate contact pressures and low relative humidity. This was due to the in-situ formation of a compacted tribo-film consisting of densified Ti3C2Tx–nanosheets. In contrast, too high pressures induced a partial rupture of the wear-protecting tribo-layer, thus reducing its beneficial effects. Additionally, no beneficial effects regarding friction and/or wear were found at higher relative humidities, which was correlated with the expansion of the basal spacings. Therefore, this study summarizes favorable operating conditions for MXene nanosheets when used as solid lubricant to improve friction and/or wear thus making them excellent candidates for advanced, next-generation solid lubricants.
Dear all, worth to consider the case of Ti-based MXenes/graphenes derivatives. As mentioned by Dr. Safwan al-qawabah answer depicted from :
https://doi.org/10.1016/j.apsusc.2020.147311
Other documents are also available going in the same direction :
https://doi.org/10.1016/j.mtadv.2021.100133
https://doi.org/10.1002/adma.202007973
https://www.nature.com/articles/s41467-018-08169-8
Dear Muhammad Chhattal this is a very interesting question. I also noted that one previous answer was copied and pasted from the Abstract of the first article suggested by Abdelkader BOUAZIZ in his last answer. In addition please also have a look at the following relevant article entitled:
Mxene nanosheets as an emerging solid lubricant for machine elements –
Towards increased energy efficiency and service life
(see attached pdf file)
In particular, please check the references 30-38 cited in this article. They refer to some pioneering work in the field of using MXenes as solid lubricants.
Frank T. Edelmann Yes I also noted during the literature review that most of the tribological studies are focused on Ti-based Mexenes only.
Dear @Muhammad Chhattal,
As you said earlier, only Ti based MXenes are reported in literature thus a lot of research work is needed to answer this question. However, If you're attempting to explore other MXenes as solid lubricants, I think other controlling factors rather than M-element in 2D MXenes should be considered. The stability of MXene to sliding test environment, the nature of in situ-oxides that M element provides during friction, surface termination types, the nature of materials in contact, few-layer or one layer type MXene. In terms of stability, M3X2 type are more stable than M2X ones So in my opinion, M3X2 have best lubrication properties than M2X MXene, if M is the same element.
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Materials Science
- Materials
- Carbon Materials
- Graphite
- Graphene