najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМОnajo-969Research ArticleNANODIAMONDSNANODIAMONDSNanodiamond-based oil lubricants on steel-steel and stainless steel – hard alloy high load contact: investigation of friction surfacesIvanovM.

Yekaterinburg

m.g.ivanov@ustu.ruMahboobaZ.

Raleigh

zmahbooba@itc-inc.orgIvanovD.

Yekaterinburg

d.m.ivanov@ustu.ruSmirnovS.

Yekaterinburg

svs@imach.uran.ruPavlyshkoS.

Yekaterinburg

OsawaE.

Tokita

osawaeiji@aol.comBrennerD.

Raleigh

brenner@ncsu.eduShenderovaO.

Raleigh

oshenderova@itc-inc.orgUral Federal UniversityRussian FederationInternational Technology Center; North Carolina State UniversityUnited StatesInstitute of Engineering Science Ural Branch RASRussian FederationNanoCarbon Research InstituteJapanNorth Carolina State UniversityUnited StatesInternational Technology CenterUnited States20141508202551160166Copyright © Ivanov M., Mahbooba Z., Ivanov D., Smirnov S., Pavlyshko S., Osawa E., Brenner D., Shenderova O., 20252025Ivanov M., Mahbooba Z., Ivanov D., Smirnov S., Pavlyshko S., Osawa E., Brenner D., Shenderova O.Ivanov M., Mahbooba Z., Ivanov D., Smirnov S., Pavlyshko S., Osawa E., Brenner D., Shenderova O.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/969

In the current paper, synergistic compositions of detonation nanodiamond (DND) particles in the form of aggregates and fully deagglomerated 5nm particles were used as additives to 10W40 and 5W30 oils, correspondingly. Ringon-disk and block-on-ring tribological tests were performed under high load conditions (300N and 980N) using friction pairs with different relative hardness. Significant reduction of wear was observed for the HRC25/25, HRC25/50 and HRC30/HRC60 steel/steel friction pairs, while for the HRC60/60 steel/steel and HRA86/HRC24 hard alloy/steel friction pairs increased wear took place. It was concluded that use of ND in lubricants under high load conditions should be approached cautiously taking into account absolute and relative hardnesses of the friction surfaces.

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The authors declare that there are no conflicts of interest present.