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Nano Serpentine Powders as Lubricant Additive: Tribological Behaviors and Self-Repairing Performance on Worn Surface

Natural serpentine powders are applicable as additives for various lubricating oils. However, no uniform theories explain their tribological performance, lubrication, and wear mechanism, especially their self-repairing mechanism. Herein, the influence of different nano serpentine powders (NSPs) cont...

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Detalles Bibliográficos
Autores principales: Wang, Binbin, Zhong, Zhaodong, Qiu, Han, Chen, Dexin, Li, Wei, Li, Shuangjian, Tu, Xiaohui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7279235/
https://www.ncbi.nlm.nih.gov/pubmed/32397564
http://dx.doi.org/10.3390/nano10050922
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author Wang, Binbin
Zhong, Zhaodong
Qiu, Han
Chen, Dexin
Li, Wei
Li, Shuangjian
Tu, Xiaohui
author_facet Wang, Binbin
Zhong, Zhaodong
Qiu, Han
Chen, Dexin
Li, Wei
Li, Shuangjian
Tu, Xiaohui
author_sort Wang, Binbin
collection PubMed
description Natural serpentine powders are applicable as additives for various lubricating oils. However, no uniform theories explain their tribological performance, lubrication, and wear mechanism, especially their self-repairing mechanism. Herein, the influence of different nano serpentine powders (NSPs) contents in liquid paraffin on the friction and wear characteristics of steel balls and the self-repairing process of NSPs on the worn surface were studied. Results show that the optimal amount of NSPs was 0.5 wt %. Relative to those of the base oil, the friction coefficients and wear spot diameters were reduced by 22.8% and 34.2%, respectively. Moreover, the long-term tribological test shows that the wear scar diameter decreased slightly after 3 h, reaching the state of dynamic balance between wear and repair. The outstanding tribological performance should be attributed to the formed bilayer tribofilm, the first layer of which contains nanoparticles surrounded by lubricants and the second layer of which contains nanoparticles compacted onto the surface of the steel ball.
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spelling pubmed-72792352020-06-15 Nano Serpentine Powders as Lubricant Additive: Tribological Behaviors and Self-Repairing Performance on Worn Surface Wang, Binbin Zhong, Zhaodong Qiu, Han Chen, Dexin Li, Wei Li, Shuangjian Tu, Xiaohui Nanomaterials (Basel) Article Natural serpentine powders are applicable as additives for various lubricating oils. However, no uniform theories explain their tribological performance, lubrication, and wear mechanism, especially their self-repairing mechanism. Herein, the influence of different nano serpentine powders (NSPs) contents in liquid paraffin on the friction and wear characteristics of steel balls and the self-repairing process of NSPs on the worn surface were studied. Results show that the optimal amount of NSPs was 0.5 wt %. Relative to those of the base oil, the friction coefficients and wear spot diameters were reduced by 22.8% and 34.2%, respectively. Moreover, the long-term tribological test shows that the wear scar diameter decreased slightly after 3 h, reaching the state of dynamic balance between wear and repair. The outstanding tribological performance should be attributed to the formed bilayer tribofilm, the first layer of which contains nanoparticles surrounded by lubricants and the second layer of which contains nanoparticles compacted onto the surface of the steel ball. MDPI 2020-05-09 /pmc/articles/PMC7279235/ /pubmed/32397564 http://dx.doi.org/10.3390/nano10050922 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Binbin
Zhong, Zhaodong
Qiu, Han
Chen, Dexin
Li, Wei
Li, Shuangjian
Tu, Xiaohui
Nano Serpentine Powders as Lubricant Additive: Tribological Behaviors and Self-Repairing Performance on Worn Surface
title Nano Serpentine Powders as Lubricant Additive: Tribological Behaviors and Self-Repairing Performance on Worn Surface
title_full Nano Serpentine Powders as Lubricant Additive: Tribological Behaviors and Self-Repairing Performance on Worn Surface
title_fullStr Nano Serpentine Powders as Lubricant Additive: Tribological Behaviors and Self-Repairing Performance on Worn Surface
title_full_unstemmed Nano Serpentine Powders as Lubricant Additive: Tribological Behaviors and Self-Repairing Performance on Worn Surface
title_short Nano Serpentine Powders as Lubricant Additive: Tribological Behaviors and Self-Repairing Performance on Worn Surface
title_sort nano serpentine powders as lubricant additive: tribological behaviors and self-repairing performance on worn surface
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7279235/
https://www.ncbi.nlm.nih.gov/pubmed/32397564
http://dx.doi.org/10.3390/nano10050922
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