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Tribological behavior of in situ fabricated graphene–nickel matrix composites

Graphene–nickel (G–Ni) composites were in situ fabricated by a powder metallurgy method. The effects of graphene content on the tribological behavior of G–Ni composites were investigated. The tribochemistry and structural evolution of graphene were analyzed by X-ray photoelectron spectroscopy (XPS)...

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Detalles Bibliográficos
Autores principales: Lei, Yu, Jiang, Jinlong, Bi, Tiantian, Du, Jinfang, Pang, Xianjuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9081109/
https://www.ncbi.nlm.nih.gov/pubmed/35541717
http://dx.doi.org/10.1039/c8ra02510j
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author Lei, Yu
Jiang, Jinlong
Bi, Tiantian
Du, Jinfang
Pang, Xianjuan
author_facet Lei, Yu
Jiang, Jinlong
Bi, Tiantian
Du, Jinfang
Pang, Xianjuan
author_sort Lei, Yu
collection PubMed
description Graphene–nickel (G–Ni) composites were in situ fabricated by a powder metallurgy method. The effects of graphene content on the tribological behavior of G–Ni composites were investigated. The tribochemistry and structural evolution of graphene were analyzed by X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy to understand the lubricating role of graphene in the G–Ni composite. The results show that graphene protects the nickel matrix from severe oxidation at the expense of its oxidation during sliding friction. Graphene on the friction interface transforms from a structure with less defects to a disordered amorphous structure. Polymeric segments are also generated by the tribochemical reactions of graphene. The formation of the tribofilms containing amorphous carbon and polymers is responsible for the self-lubricating behavior of the G–Ni composites.
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spelling pubmed-90811092022-05-09 Tribological behavior of in situ fabricated graphene–nickel matrix composites Lei, Yu Jiang, Jinlong Bi, Tiantian Du, Jinfang Pang, Xianjuan RSC Adv Chemistry Graphene–nickel (G–Ni) composites were in situ fabricated by a powder metallurgy method. The effects of graphene content on the tribological behavior of G–Ni composites were investigated. The tribochemistry and structural evolution of graphene were analyzed by X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy to understand the lubricating role of graphene in the G–Ni composite. The results show that graphene protects the nickel matrix from severe oxidation at the expense of its oxidation during sliding friction. Graphene on the friction interface transforms from a structure with less defects to a disordered amorphous structure. Polymeric segments are also generated by the tribochemical reactions of graphene. The formation of the tribofilms containing amorphous carbon and polymers is responsible for the self-lubricating behavior of the G–Ni composites. The Royal Society of Chemistry 2018-06-15 /pmc/articles/PMC9081109/ /pubmed/35541717 http://dx.doi.org/10.1039/c8ra02510j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Lei, Yu
Jiang, Jinlong
Bi, Tiantian
Du, Jinfang
Pang, Xianjuan
Tribological behavior of in situ fabricated graphene–nickel matrix composites
title Tribological behavior of in situ fabricated graphene–nickel matrix composites
title_full Tribological behavior of in situ fabricated graphene–nickel matrix composites
title_fullStr Tribological behavior of in situ fabricated graphene–nickel matrix composites
title_full_unstemmed Tribological behavior of in situ fabricated graphene–nickel matrix composites
title_short Tribological behavior of in situ fabricated graphene–nickel matrix composites
title_sort tribological behavior of in situ fabricated graphene–nickel matrix composites
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9081109/
https://www.ncbi.nlm.nih.gov/pubmed/35541717
http://dx.doi.org/10.1039/c8ra02510j
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