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Volume 10
Issue 12
10.3390/lubricants10120365
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Article

Impact of Fatty Triamine on Friction Reduction Performance of MoDTC Lubrication Additive

by
Camella Oumahi
1,
Thierry Le Mogne
2,
Antonio Aguilar-Tapia
3,
Catherine Charrin
4,
Christophe Geantet
1,
Pavel Afanasiev
1,*,
Benoit Thiebaut
4 and
Maria Isabel De Barros-Bouchet
2,*
1
Université Lyon I, Institut de Recherches sur la Catalyse et l’Environnement de Lyon (IRCELYON), CNRS UMR5256, 69100 Villeurbanne, France
2
Laboratoire de Tribologie et Dynamique des Systèmes, École Centrale de Lyon, CNRS UMR5513, 69134 Ecully, France
3
Institut de Chimie Moléculaire de Grenoble, UAR2607 CNRS Université Grenoble Alpes, 38000 Grenoble, France
4
TotalEnergies, OneTech, 69360 Solaize, France
*
Authors to whom correspondence should be addressed.
Lubricants 2022, 10(12), 365; https://doi.org/10.3390/lubricants10120365
Submission received: 25 October 2022 / Revised: 5 December 2022 / Accepted: 8 December 2022 / Published: 16 December 2022
(This article belongs to the Special Issue Advanced Industrial Lubricants and Future Development Trends of Tribo-Systems for Tribological Performance Evaluation)
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Abstract

The impact of a fatty triamine (Triameen YT) additive was investigated on the friction performance and stability of molybdenum dithiocarbamate (MoDTC) in the formulations containing polyalphaolefin synthetic base oil (PAO) and zinc dialkyldithiophosphate (ZDDP). Triamine has no significant effect when mixed with MoDTC and ZDDP, but it improves the performance of MoDTC alone. However, in the MoDTC—Triamine—PAO solutions, a chemical reaction easily occurred and a reddish precipitate was formed upon storage. According to IR, XPS, TEM, and XAS characterizations, this precipitate is poorly crystalline layered alkylammonium oxothiomolybdate. Formation of the precipitate impaired the tribological performance by decreasing the number of active species delivered at the sliding contact interface. However, low friction coefficients were recovered by redispersion of the precipitate in PAO.
Keywords: organic additives; tribochemistry; molybdenum-based additives; electron microscopy; EXAFS organic additives; tribochemistry; molybdenum-based additives; electron microscopy; EXAFS

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MDPI and ACS Style

Oumahi, C.; Mogne, T.L.; Aguilar-Tapia, A.; Charrin, C.; Geantet, C.; Afanasiev, P.; Thiebaut, B.; De Barros-Bouchet, M.I. Impact of Fatty Triamine on Friction Reduction Performance of MoDTC Lubrication Additive. Lubricants 2022, 10, 365. https://doi.org/10.3390/lubricants10120365

AMA Style

Oumahi C, Mogne TL, Aguilar-Tapia A, Charrin C, Geantet C, Afanasiev P, Thiebaut B, De Barros-Bouchet MI. Impact of Fatty Triamine on Friction Reduction Performance of MoDTC Lubrication Additive. Lubricants. 2022; 10(12):365. https://doi.org/10.3390/lubricants10120365

Chicago/Turabian Style

Oumahi, Camella, Thierry Le Mogne, Antonio Aguilar-Tapia, Catherine Charrin, Christophe Geantet, Pavel Afanasiev, Benoit Thiebaut, and Maria Isabel De Barros-Bouchet. 2022. "Impact of Fatty Triamine on Friction Reduction Performance of MoDTC Lubrication Additive" Lubricants 10, no. 12: 365. https://doi.org/10.3390/lubricants10120365

APA Style

Oumahi, C., Mogne, T. L., Aguilar-Tapia, A., Charrin, C., Geantet, C., Afanasiev, P., Thiebaut, B., & De Barros-Bouchet, M. I. (2022). Impact of Fatty Triamine on Friction Reduction Performance of MoDTC Lubrication Additive. Lubricants, 10(12), 365. https://doi.org/10.3390/lubricants10120365

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