Abstract
In the present study we utilized h-BN nanoparticles (NPs) with different morphologies (hollow NPs with smooth surface (H-BNNPs), solid NPs with “pompon”-like or petalled structure (P-BNNPs), and globular NPs formed by numerous thin h-BN nanosheets (N-BNNPs)) as additives to PAO6 oil. Two sliding 100Cr6 surfaces were tested in the presence of PAO6+BNNP lubricants with 0.1% and 0.01% of BNNPs. The positive effect of BNNP additives increased along the row P-BNNPs → H-BNNPs → N-BNNPs. Utilization of N-BNNPs permitted to decrease noticeably the friction coefficient from 0.1 to 0.06 and reduce significantly the wear rate. In situ mechanical TEM tests were also performed to visualize and correlate the mechanical properties of individual h-BN NPs to their large-scale friction behavior.
Original language | English |
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Pages (from-to) | 6801-6809 |
Number of pages | 9 |
Journal | Ceramics International |
Volume | 44 |
Issue number | 6 |
DOIs | |
Publication status | Published - 15 Apr 2018 |
Externally published | Yes |
Keywords
- A. Powders: gas phase reaction
- C. Friction
- C. Mechanical properties
- D. Nitrides