Journal
TRIBOLOGY INTERNATIONAL
Volume 92, Issue -, Pages 454-461Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2015.07.031
Keywords
Nanometer TiO2; Nanometer SiO2; Insulation; Friction and wear
Categories
Funding
- Hundreds Talent Program of Chinese Academy of Sciences
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New greases were synthesized using oleophilic nanometer-TiO2 and nanometer-SiO2 as additives. When the additives in naphthenic oil is 0.1 wt%, the alternating current (AC) breakdown strength is enhanced by 10.4% and 8.2% at power frequency, respectively. Also the grease volume resistivities are improved by 23% and 30% compared with base grease, which use naphthenic oil as base oil. The greases tribological behaviors were explored. Scanning electron microscope linked with energy dispersive X-ray spectroscope was utilized in order to analyze these scratches. The good tribological characteristics of nanometer-TiO2 greases and the good friction-reducing characteristic of nanometer-SiO2 greases are ascribed to the nanoparticles mechanical effect, and are also ascribed to the protect film generated by Ti and Si deposited or metallic oxide. (C) 2015 Elsevier Ltd. All rights reserved.
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