Implanting MnO2 into Hexagonal Boron Nitride as Nanoadditives for Enhancing Tribological Performance

Xiaorong Chen; Wenting Chen; Linyi Zhang; Minli Zeng; Shiming Yang; Zanhe Yang; Oluwafunmilola Ola; Kunyapat Thummavichai; Nannan Wang; Yanqiu Zhu

doi:10.3390/cryst12040451

Implanting MnO₂ into Hexagonal Boron Nitride as Nanoadditives for Enhancing Tribological Performance

Xiaorong Chen, Wenting Chen, Linyi Zhang, Minli Zeng, Shiming Yang, Zanhe Yang, Oluwafunmilola Ola, Kunyapat Thummavichai, Nannan Wang^*, Yanqiu Zhu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

Hexagonal boron nitride nanosheets (h-BNNs) show great potential in the field of tribology due to their typical two-dimensional layered structure and are essential for replacing conventional sulfur/phosphate-containing additives. However, the large particle size and poor dispersion of h-BNs seriously restrict their green lubrication application. In this paper, MnO₂@h-BNNs nanocomposites were successfully prepared by ultrasonically exfoliating a hydrothermal method. The tribological properties of MnO₂@h-BNNs nanocomposites as lubricant additives in poly-alpha-olefin oil (PAO) were investigated. The results show the oil dispersed with 0.25 wt% MnO₂@h-BNNs had the best friction reduction and antiwear effect with 42% and 11.2% reduction, respectively, compared with the plain oil. Through further wear surface analyzing, we verified the antiwear mechanism of additives in filling the micropits and grooves on the wear surface and forming a friction protection film including Fe₂O₃, MnO₂, and BN on the wear surface, avoiding direct contact between the friction subsets. This can provide ideas for other lubricating oil additives.

Original language	English
Article number	451
Journal	Crystals
Volume	12
Issue number	4
DOIs	https://doi.org/10.3390/cryst12040451
Publication status	Published - 23 Mar 2022
Externally published	Yes

Keywords

hexagonal boron nitride (h-BN)
lubricant additive
manganese dioxide
PAO6
tribological properties

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10.3390/cryst12040451Licence: CC BY

crystals-12-00451-v3Final published version, 34.8 MBLicence: CC BY

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@article{8cd51dd9415a42048ca6f7309c76799e,

title = "Implanting MnO2 into Hexagonal Boron Nitride as Nanoadditives for Enhancing Tribological Performance",

abstract = "Hexagonal boron nitride nanosheets (h-BNNs) show great potential in the field of tribology due to their typical two-dimensional layered structure and are essential for replacing conventional sulfur/phosphate-containing additives. However, the large particle size and poor dispersion of h-BNs seriously restrict their green lubrication application. In this paper, MnO2@h-BNNs nanocomposites were successfully prepared by ultrasonically exfoliating a hydrothermal method. The tribological properties of MnO2@h-BNNs nanocomposites as lubricant additives in poly-alpha-olefin oil (PAO) were investigated. The results show the oil dispersed with 0.25 wt\% MnO2@h-BNNs had the best friction reduction and antiwear effect with 42\% and 11.2\% reduction, respectively, compared with the plain oil. Through further wear surface analyzing, we verified the antiwear mechanism of additives in filling the micropits and grooves on the wear surface and forming a friction protection film including Fe2O3, MnO2, and BN on the wear surface, avoiding direct contact between the friction subsets. This can provide ideas for other lubricating oil additives.",

keywords = "hexagonal boron nitride (h-BN), lubricant additive, manganese dioxide, PAO6, tribological properties",

author = "Xiaorong Chen and Wenting Chen and Linyi Zhang and Minli Zeng and Shiming Yang and Zanhe Yang and Oluwafunmilola Ola and Kunyapat Thummavichai and Nannan Wang and Yanqiu Zhu",

note = "Funding information: This work was supported by the grants from the Key Laboratory of New Processing Technology for Nonferrous Metals and Materials. to the authors also thank FullerStar Ltd. for providing the related materials.",

year = "2022",

month = mar,

day = "23",

doi = "10.3390/cryst12040451",

language = "English",

volume = "12",

journal = "Crystals",

issn = "2073-4352",

publisher = "MDPI AG",

number = "4",

}

TY - JOUR

T1 - Implanting MnO2 into Hexagonal Boron Nitride as Nanoadditives for Enhancing Tribological Performance

AU - Chen, Xiaorong

AU - Chen, Wenting

AU - Zhang, Linyi

AU - Zeng, Minli

AU - Yang, Shiming

AU - Yang, Zanhe

AU - Ola, Oluwafunmilola

AU - Thummavichai, Kunyapat

AU - Wang, Nannan

AU - Zhu, Yanqiu

N1 - Funding information: This work was supported by the grants from the Key Laboratory of New Processing Technology for Nonferrous Metals and Materials. to the authors also thank FullerStar Ltd. for providing the related materials.

PY - 2022/3/23

Y1 - 2022/3/23

N2 - Hexagonal boron nitride nanosheets (h-BNNs) show great potential in the field of tribology due to their typical two-dimensional layered structure and are essential for replacing conventional sulfur/phosphate-containing additives. However, the large particle size and poor dispersion of h-BNs seriously restrict their green lubrication application. In this paper, MnO2@h-BNNs nanocomposites were successfully prepared by ultrasonically exfoliating a hydrothermal method. The tribological properties of MnO2@h-BNNs nanocomposites as lubricant additives in poly-alpha-olefin oil (PAO) were investigated. The results show the oil dispersed with 0.25 wt% MnO2@h-BNNs had the best friction reduction and antiwear effect with 42% and 11.2% reduction, respectively, compared with the plain oil. Through further wear surface analyzing, we verified the antiwear mechanism of additives in filling the micropits and grooves on the wear surface and forming a friction protection film including Fe2O3, MnO2, and BN on the wear surface, avoiding direct contact between the friction subsets. This can provide ideas for other lubricating oil additives.

AB - Hexagonal boron nitride nanosheets (h-BNNs) show great potential in the field of tribology due to their typical two-dimensional layered structure and are essential for replacing conventional sulfur/phosphate-containing additives. However, the large particle size and poor dispersion of h-BNs seriously restrict their green lubrication application. In this paper, MnO2@h-BNNs nanocomposites were successfully prepared by ultrasonically exfoliating a hydrothermal method. The tribological properties of MnO2@h-BNNs nanocomposites as lubricant additives in poly-alpha-olefin oil (PAO) were investigated. The results show the oil dispersed with 0.25 wt% MnO2@h-BNNs had the best friction reduction and antiwear effect with 42% and 11.2% reduction, respectively, compared with the plain oil. Through further wear surface analyzing, we verified the antiwear mechanism of additives in filling the micropits and grooves on the wear surface and forming a friction protection film including Fe2O3, MnO2, and BN on the wear surface, avoiding direct contact between the friction subsets. This can provide ideas for other lubricating oil additives.

KW - hexagonal boron nitride (h-BN)

KW - lubricant additive

KW - manganese dioxide

KW - PAO6

KW - tribological properties

UR - https://www.scopus.com/pages/publications/85127752733

U2 - 10.3390/cryst12040451

DO - 10.3390/cryst12040451

M3 - Article

AN - SCOPUS:85127752733

SN - 2073-4352

VL - 12

JO - Crystals

JF - Crystals

IS - 4

M1 - 451

ER -

Implanting MnO₂ into Hexagonal Boron Nitride as Nanoadditives for Enhancing Tribological Performance

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