Atom-probe tomography of tribological boundary films resulting from boron-based oil additives

SCRIPTA MATERIALIA

卷:111

Article

Kim, Yoon-Jun¹  Baik, Sung-Il^1,2  Bertolucci-Coelho, Leonardo³  Mazzaferro, Luca³  Ramirez, Giovanni⁴  Erdermir, Ali⁴  Seidman, David N.^1,2 

[1] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

[2] Northwestern Univ, Ctr Atom Probe Tomog NUCAFF, Evanston, IL 60208 USA

[3] Univ Fed Santa Catarina, Mat Sci & Engn Grad Program, BR-88040900 Florianopolis, SC, Brazil

[4] Argonne Natl Lab, Div Energy Syst, Argonne, IL 60349 USA

关键词: Atom-probe tomography;    Transmission electron microscopy;    Tribofilm;    Boron oxide;    Lubricant;   

DOI  :  10.1016/j.scriptamat.2015.08.015

来源: Elsevier

【 摘 要 】

Correlative characterization using atom-probe tomography (APT) and transmission electron microscopy (TEM) was performed on a tribofilm formed during sliding frictional testing with a fully formulated engine oil, which also contains a boron-based additive. The tribofilm formed is similar to 15 nm thick and consists of oxides of iron and compounds of B, Ca, P, and S, which are present in the additive. This study provides strong evidence for boron being embedded in the tribofilm, which effectively reduces friction and wear losses. (c) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free