TY - JOUR
T1 - Tribological properties of carbon nanotubes as lubricant additive in oil and water for a wheel-rail system
AU - Cornelio, Jesús Antonio Carlos
AU - Cuervo, Paula Andrea
AU - Hoyos-Palacio, Lina Marcela
AU - Lara-Romero, Javier
AU - Toro, Alejandro
N1 - Publisher Copyright:
© 2015 Brazilian Metallurgical, Materials and Mining Association.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - Since their discovery in 1991 carbon nanotubes (CNTs) have attracted much interest due to their remarkable mechanical, thermal, electrical, chemical and optical properties. In connection with their mechanical properties, CNTs have been studied in various forms for tribological applications including their use as lubricant additives for oil and water. In this work, the tribological properties of functionalized nanotubes (single and multi-walled) modified with carboxylic acid when used as lubricant additives at different concentrations (0.01, 0.05%) were studied under rolling-sliding conditions in a twin-disk testing machine. The tests were performed using 5% of creepage and pressures of 0.8 GPa and 1.1 GPa. The results indicated that the presence of carbon nanotubes leads to a decrease in both friction coefficient and wear rate for both systems studied (oil and water).
AB - Since their discovery in 1991 carbon nanotubes (CNTs) have attracted much interest due to their remarkable mechanical, thermal, electrical, chemical and optical properties. In connection with their mechanical properties, CNTs have been studied in various forms for tribological applications including their use as lubricant additives for oil and water. In this work, the tribological properties of functionalized nanotubes (single and multi-walled) modified with carboxylic acid when used as lubricant additives at different concentrations (0.01, 0.05%) were studied under rolling-sliding conditions in a twin-disk testing machine. The tests were performed using 5% of creepage and pressures of 0.8 GPa and 1.1 GPa. The results indicated that the presence of carbon nanotubes leads to a decrease in both friction coefficient and wear rate for both systems studied (oil and water).
KW - Carbon nanotubes
KW - Friction coefficient
KW - Lubricant additives
KW - Twin-disk testing machine
UR - http://www.scopus.com/inward/record.url?scp=85006197276&partnerID=8YFLogxK
U2 - 10.1016/j.jmrt.2015.10.006
DO - 10.1016/j.jmrt.2015.10.006
M3 - Article
AN - SCOPUS:85006197276
SN - 2238-7854
VL - 5
SP - 68
EP - 76
JO - Journal of Materials Research and Technology
JF - Journal of Materials Research and Technology
IS - 1
ER -