The structural, tribological, and rheological dependency of thin hexadecane film confined between iron and iron oxide surfaces under sliding conditions

Authors

Thi Dinh Ta, University of WollongongFollow
Anh Kiet Tieu, University of WollongongFollow
Hongtao Zhu, University of WollongongFollow
Buyung Kosasih, University of WollongongFollow
Qiang Zhu, University of WollongongFollow
Hoang The Phan, University of WollongongFollow

RIS ID

111555

Publication Details

Ta, T. D., Tieu, A. K., Zhu, H., Kosasih, B., Zhu, Q. & Phan, H. T. (2017). The structural, tribological, and rheological dependency of thin hexadecane film confined between iron and iron oxide surfaces under sliding conditions. Tribology International, 113 26-35.

Abstract

Molecular dynamics simulations have been carried out to investigate the tribological, structural and rheological properties of thin film hexadecane confined between different iron and iron oxide surfaces. The interfacial slip becomes severe with the increase of loading pressure and shear rate but it is insensitive to temperature. The shear stress increases with the loading pressure whereas the coefficient of friction shows a contrasting propensity. The shear stress and coefficient of friction increase with shear rate; and decrease with higher surface temperature. A logarithmic function has been proposed to correlate the variation of friction with shear rate. The shear viscosity increases exponentially with the loading pressure but this rheological component levels off when the loading pressure exceeds a critical value.