TY - JOUR
T1 - Study on the relationship between the tribological properties and oxidation degree of graphene derivatives in O/W emulsion
AU - Wu, Yinglei
AU - Sun, Tao
AU - He, Zhongyi
AU - Zeng, Xiangqiong
AU - Ren, Tianhui
AU - de Vries, Erik
AU - van der Heide, Emile
PY - 2021/5
Y1 - 2021/5
N2 - Graphene oxide (GO) underwent a single and double-side modification with octadecylamine (ODA) to MGO1 and MGO2 respectively. MGO1 and MGO2 were incorporated into the O/W base emulsion respectively to change the composition of the boundary layer and the oil phase. It was found that the tribological properties of MGO1-emulsion were better than that of MGO2-emulsion. Chemical composition analysis of the worn surfaces suggests that MGO1 nanosheets might adsorb more easily onto the surface and react better with the bearing steel to produce C–N–O–Fe-containing compounds than do MGO2 nanosheets, and that MGO1 nanosheets were more actively involved in the shear process that occurs in the contact area. SEM and nanoindentation indicated that there was a non-uniform softer MGO1-tribofilm on metal substrate.
AB - Graphene oxide (GO) underwent a single and double-side modification with octadecylamine (ODA) to MGO1 and MGO2 respectively. MGO1 and MGO2 were incorporated into the O/W base emulsion respectively to change the composition of the boundary layer and the oil phase. It was found that the tribological properties of MGO1-emulsion were better than that of MGO2-emulsion. Chemical composition analysis of the worn surfaces suggests that MGO1 nanosheets might adsorb more easily onto the surface and react better with the bearing steel to produce C–N–O–Fe-containing compounds than do MGO2 nanosheets, and that MGO1 nanosheets were more actively involved in the shear process that occurs in the contact area. SEM and nanoindentation indicated that there was a non-uniform softer MGO1-tribofilm on metal substrate.
KW - Modified graphene oxide
KW - Nanoindentation
KW - Tribological mechanism
KW - Tribological properties
KW - 2023 OA procedure
UR - http://www.scopus.com/inward/record.url?scp=85099623427&partnerID=8YFLogxK
U2 - 10.1016/j.triboint.2021.106875
DO - 10.1016/j.triboint.2021.106875
M3 - Article
AN - SCOPUS:85099623427
SN - 0301-679X
VL - 157
JO - Tribology international
JF - Tribology international
M1 - 106875
ER -