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 - http://www.scopus.com/inward/record.url?scp=85127752733&partnerID=8YFLogxK
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 -