Development of a nitrogen-doped 2D material for tribological applications in the boundary-lubrication regime

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Abstract

The present paper describes a facile synthesis method for nitrogen-doped reduced graphene oxide (N-rGO) and the application of N-rGO as an effective additive for improving the tribological properties of base oil. N-rGO has been characterized by different characterization techniques such as X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy and Raman spectroscopy. N-rGO-based nanolubricants are prepared and their tribological properties are studied using a four-ball tester. The nanolubricants show excellent stability over a period of six months and a significant decrease in coefficient of friction (25%) for small amounts of N-rGO (3 mg/L). The improvement in tribological properties can be attributed to the sliding mechanism of N-rGO accompanied by the high mechanical strength of graphene. Further, the nanolubricant is prepared at large scale (700 liter) and field trials are carried out at one NTPC thermal plant in India. The implementation of the nanolubricant in an induced draft (ID) fan results in the remarkable decrease in the power consumption.

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Chandrabhan, S. R., Jayan, V., Parihar, S. S., & Ramaprabhu, S. (2017). Development of a nitrogen-doped 2D material for tribological applications in the boundary-lubrication regime. Beilstein Journal of Nanotechnology, 8(1), 1476–1483. https://doi.org/10.3762/bjnano.8.147

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