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Title: Towards developing robust solid lubricant operable in multifarious environments

Abstract

Abstract Conventional solid lubricants such as MoS 2 , graphite, or diamond-like carbon films demonstrate excellent tribological performance but only in specific environments due to their inherent materials properties. This limitation prohibits using these solid lubricants in environments that change dynamically. This study presents the results of a novel solid lubricant that was developed using a combination of solution-processed 2D-molybdenum disulfide and graphene-oxide (GO) that can be deposited on to stainless steel substrates using a simple spray-coating technique and show exceptional performance in multifarious environments namely, ambient (humid) atmosphere, dry nitrogen, and vacuum. The tribological performance of the coatings was evaluated using a ball-on-disc sliding test and demonstrated an excellent wear/friction performance in all environments and coating survived even after 44 km of linear sliding. Transmission electron microscopy and Raman spectroscopy analysis of the tribolayers suggested in-operando friction-induced re-orientation of MoS 2 layers that were protected by GO layers and, an absence of MoO x peaks indicate a strong resistance to intercalation with moisture and oxygen. The simplicity and robustness of the hybrid MoS 2 –GO solid lubricant in mitigating wear-friction behavior of steel-on-steel tribopair in a multifarious environment is a game-changing and is promising for various applications.

Authors:
; ;
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Lemont, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office; USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1664497
Alternate Identifier(s):
OSTI ID: 1673306
Grant/Contract Number:  
AC02-06CH11357; TCF-17-13538
Resource Type:
Journal Article: Published Article
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Name: Scientific Reports Journal Volume: 10 Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United Kingdom
Language:
English
Subject:
Materials science; Nanoscience and technology

Citation Formats

Ayyagari, Aditya V., Mutyala, Kalyan C., and Sumant, Anirudha V. Towards developing robust solid lubricant operable in multifarious environments. United Kingdom: N. p., 2020. Web. doi:10.1038/s41598-020-72666-4.
Ayyagari, Aditya V., Mutyala, Kalyan C., & Sumant, Anirudha V. Towards developing robust solid lubricant operable in multifarious environments. United Kingdom. doi:10.1038/s41598-020-72666-4.
Ayyagari, Aditya V., Mutyala, Kalyan C., and Sumant, Anirudha V. Mon . "Towards developing robust solid lubricant operable in multifarious environments". United Kingdom. doi:10.1038/s41598-020-72666-4.
@article{osti_1664497,
title = {Towards developing robust solid lubricant operable in multifarious environments},
author = {Ayyagari, Aditya V. and Mutyala, Kalyan C. and Sumant, Anirudha V.},
abstractNote = {Abstract Conventional solid lubricants such as MoS 2 , graphite, or diamond-like carbon films demonstrate excellent tribological performance but only in specific environments due to their inherent materials properties. This limitation prohibits using these solid lubricants in environments that change dynamically. This study presents the results of a novel solid lubricant that was developed using a combination of solution-processed 2D-molybdenum disulfide and graphene-oxide (GO) that can be deposited on to stainless steel substrates using a simple spray-coating technique and show exceptional performance in multifarious environments namely, ambient (humid) atmosphere, dry nitrogen, and vacuum. The tribological performance of the coatings was evaluated using a ball-on-disc sliding test and demonstrated an excellent wear/friction performance in all environments and coating survived even after 44 km of linear sliding. Transmission electron microscopy and Raman spectroscopy analysis of the tribolayers suggested in-operando friction-induced re-orientation of MoS 2 layers that were protected by GO layers and, an absence of MoO x peaks indicate a strong resistance to intercalation with moisture and oxygen. The simplicity and robustness of the hybrid MoS 2 –GO solid lubricant in mitigating wear-friction behavior of steel-on-steel tribopair in a multifarious environment is a game-changing and is promising for various applications.},
doi = {10.1038/s41598-020-72666-4},
journal = {Scientific Reports},
issn = {2045-2322},
number = 1,
volume = 10,
place = {United Kingdom},
year = {2020},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
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