Preparation and tribology performance of nano magnetic grease

Bao Jiusheng; Zhu Zhencai; Yin Yan; Liu Shujin

doi:10.1108/00368790910964224

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Industrial Lubrication and Tribology

ISSN: 0036-8792

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Preparation and tribology performance of nano magnetic grease

Document Information:
Title:	Preparation and tribology performance of nano magnetic grease
Author(s):	Bao Jiusheng, (School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou, China), Zhu Zhencai, (School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou, China), Yin Yan, (School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou, China), Liu Shujin, (School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou, China)
Citation:	Bao Jiusheng, Zhu Zhencai, Yin Yan, Liu Shujin, (2009) "Preparation and tribology performance of nano magnetic grease", Industrial Lubrication and Tribology, Vol. 61 Iss: 4, pp.228 - 231
Keywords:	Lubrication, Magnetism, Nanotechnology, Synthetic oil, Tribology
Article type:	Research paper
DOI:	10.1108/00368790910964224 (Permanent URL)
Publisher:	Emerald Group Publishing Limited
Abstract:	Purpose – The purpose of this paper is to prepare a novel nano magnetic grease with favorable lubricating performance; to contrast the tribology performance of the magnetic grease with the original grease, and to find the lubricating mechanism of the magnetic grease. Design/methodology/approach – The nano Fe3O4 magnetic fluids are added into the general urea grease to synthesize the nano magnetic grease. Tribology performance tests of the magnetic grease and the original grease are contrasted on a MMW-1 four-ball tester. Based on three kinds of effects caused by the nano magnetic fluids, the lubricating mechanism of the magnetic grease is discussed. Findings – Nano magnetic grease with favorable lubricating performance can be synthesized by adding the nano Fe3O4 magnetic fluids into the general urea grease. The nano magnetic grease has better lubricating performance and more steady bearing capability than the original grease, and is especially available for the lubricating of equipment with high speed and heavy load. The performance improvement of the magnetic grease is owing to the interactions of three kinds of effects as follows: the viscosity increasing effect, the micro-rolling effect, and the friction weakening effect, which are all caused by the nano magnetic fluids added into the grease. Originality/value – The paper documents that the nano Fe3O4 magnetic fluids added into the urea grease to synthesize a novel nano magnetic grease has been proved to have quite favorable lubricating performance by the tribology experiments, and the lubricating mechanism of the magnetic grease is also discussed.