A comparison of tribological properties of nanolubricants containing carbon nanotori and additional additives

Estefany Tovar Sifuentes; Oxana V. Kharissova; Demófilo Maldonado-Cortés; Laura Peña-Parás; Remigiusz Michalczewski; Boris I. Kharisov

doi:10.1016/j.matchemphys.2021.124973

A comparison of tribological properties of nanolubricants containing carbon nanotori and additional additives

Estefany Tovar Sifuentes, Oxana V. Kharissova, Demófilo Maldonado-Cortés, Laura Peña-Parás, Remigiusz Michalczewski, Boris I. Kharisov^*

^*Corresponding author for this work

Departamento de Ingeniería Mecánica y Eléctrica

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

9 Citations (Scopus)

Abstract

This work presents the effects of five inorganic nanoparticles as additives, i.e., CNp (carbon nanotori particles), TiO₂, MoS₂, MoO₃, and HcNT (halloysite clay nanotubes), in three different lubricants (oil-based, grease, and water-based). Nanolubricants were prepared by adding 1 wt% particles into each type of lubricant. Tribological properties of nanolubricants were determined and compared under anti-wear (AW) and extreme pressure (EP) conditions. CNp showed a decrease in coefficient of friction (COF) by 22% when added to water-based lubricant. Additionally, CNp demonstrated an improvement in limiting pressure of seizure (p_oz) of 74%, 52%, and 1621% for oil-based lubricant, grease, and water-based lubricant, respectively. Comparing 1 wt% CNp added to water-based lubricant with oil-based lubricant and grease, the improvements become outstanding under EP conditions. An increase in p_oz by 2479% compared to oil-based lubricant, and 789% compared to grease, was observed. In addition, a decrease of 66–69% in average wear scar diameter (AWSD) was obtained in comparison to oil-based lubricant and grease. Tribological mechanisms of carbon nanotori provide a rolling/sliding effect under AW conditions, and a load-bearing effect under EP conditions.

Original language	English
Article number	124973
Journal	Materials Chemistry and Physics
Volume	272
DOIs	https://doi.org/10.1016/j.matchemphys.2021.124973
Publication status	Published - 1 Nov 2021

Bibliographical note

Funding Information:
This work was supported by FCFM-UANL , UDEM , and ITeE-PIB . Estefany Tovar Sifuentes gratefully acknowledges Conacyt-Mexico for the scholarship.

Publisher Copyright:
© 2021 Elsevier B.V.

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics

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10.1016/j.matchemphys.2021.124973

Cite this

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title = "A comparison of tribological properties of nanolubricants containing carbon nanotori and additional additives",

abstract = "This work presents the effects of five inorganic nanoparticles as additives, i.e., CNp (carbon nanotori particles), TiO2, MoS2, MoO3, and HcNT (halloysite clay nanotubes), in three different lubricants (oil-based, grease, and water-based). Nanolubricants were prepared by adding 1 wt% particles into each type of lubricant. Tribological properties of nanolubricants were determined and compared under anti-wear (AW) and extreme pressure (EP) conditions. CNp showed a decrease in coefficient of friction (COF) by 22% when added to water-based lubricant. Additionally, CNp demonstrated an improvement in limiting pressure of seizure (poz) of 74%, 52%, and 1621% for oil-based lubricant, grease, and water-based lubricant, respectively. Comparing 1 wt% CNp added to water-based lubricant with oil-based lubricant and grease, the improvements become outstanding under EP conditions. An increase in poz by 2479% compared to oil-based lubricant, and 789% compared to grease, was observed. In addition, a decrease of 66–69% in average wear scar diameter (AWSD) was obtained in comparison to oil-based lubricant and grease. Tribological mechanisms of carbon nanotori provide a rolling/sliding effect under AW conditions, and a load-bearing effect under EP conditions.",

author = "Sifuentes, {Estefany Tovar} and Kharissova, {Oxana V.} and Dem{\'o}filo Maldonado-Cort{\'e}s and Laura Pe{\~n}a-Par{\'a}s and Remigiusz Michalczewski and Kharisov, {Boris I.}",

note = "Funding Information: This work was supported by FCFM-UANL , UDEM , and ITeE-PIB . Estefany Tovar Sifuentes gratefully acknowledges Conacyt-Mexico for the scholarship. Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

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AU - Sifuentes, Estefany Tovar

AU - Kharissova, Oxana V.

AU - Maldonado-Cortés, Demófilo

AU - Peña-Parás, Laura

AU - Michalczewski, Remigiusz

AU - Kharisov, Boris I.

N1 - Funding Information: This work was supported by FCFM-UANL , UDEM , and ITeE-PIB . Estefany Tovar Sifuentes gratefully acknowledges Conacyt-Mexico for the scholarship. Publisher Copyright: © 2021 Elsevier B.V.

PY - 2021/11/1

Y1 - 2021/11/1

N2 - This work presents the effects of five inorganic nanoparticles as additives, i.e., CNp (carbon nanotori particles), TiO2, MoS2, MoO3, and HcNT (halloysite clay nanotubes), in three different lubricants (oil-based, grease, and water-based). Nanolubricants were prepared by adding 1 wt% particles into each type of lubricant. Tribological properties of nanolubricants were determined and compared under anti-wear (AW) and extreme pressure (EP) conditions. CNp showed a decrease in coefficient of friction (COF) by 22% when added to water-based lubricant. Additionally, CNp demonstrated an improvement in limiting pressure of seizure (poz) of 74%, 52%, and 1621% for oil-based lubricant, grease, and water-based lubricant, respectively. Comparing 1 wt% CNp added to water-based lubricant with oil-based lubricant and grease, the improvements become outstanding under EP conditions. An increase in poz by 2479% compared to oil-based lubricant, and 789% compared to grease, was observed. In addition, a decrease of 66–69% in average wear scar diameter (AWSD) was obtained in comparison to oil-based lubricant and grease. Tribological mechanisms of carbon nanotori provide a rolling/sliding effect under AW conditions, and a load-bearing effect under EP conditions.

AB - This work presents the effects of five inorganic nanoparticles as additives, i.e., CNp (carbon nanotori particles), TiO2, MoS2, MoO3, and HcNT (halloysite clay nanotubes), in three different lubricants (oil-based, grease, and water-based). Nanolubricants were prepared by adding 1 wt% particles into each type of lubricant. Tribological properties of nanolubricants were determined and compared under anti-wear (AW) and extreme pressure (EP) conditions. CNp showed a decrease in coefficient of friction (COF) by 22% when added to water-based lubricant. Additionally, CNp demonstrated an improvement in limiting pressure of seizure (poz) of 74%, 52%, and 1621% for oil-based lubricant, grease, and water-based lubricant, respectively. Comparing 1 wt% CNp added to water-based lubricant with oil-based lubricant and grease, the improvements become outstanding under EP conditions. An increase in poz by 2479% compared to oil-based lubricant, and 789% compared to grease, was observed. In addition, a decrease of 66–69% in average wear scar diameter (AWSD) was obtained in comparison to oil-based lubricant and grease. Tribological mechanisms of carbon nanotori provide a rolling/sliding effect under AW conditions, and a load-bearing effect under EP conditions.

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A comparison of tribological properties of nanolubricants containing carbon nanotori and additional additives

Abstract

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