期刊
CARBON
卷 79, 期 -, 页码 227-235出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2014.07.063
关键词
-
资金
- Finnish Metals and Engineering Competence Cluster (FIMECC)
The silica/graphene oxide (GO) composites powders of different compositions were synthesized by hydrothermal method. Composites were dispersed in ethylene glycol keeping the additive's concentration constant (0.125 wt%). The lubricating properties of the dispersions were studied in steel-steel contact by pin-on-disc method. Tests were conducted at a low speed (0.008 m/s) and a high normal load of 68.9 N. Composite with 10 wt% of GO in silica matrix showed reduction of coefficient of friction in ethylene glycol by 38% and reduction of disc wear coefficient by 31% compared to pure ethylene glycol. Silica/GO composites provided lower friction and wear rate in ethylene glycol lubrication compare to pure silica and pure GO. (C) 2014 Elsevier Ltd. All rights reserved.
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