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Comparative Study on Tribological Behavior of Sb2S3 Nano―bundles and Nano―particles in Liquid Paraffin

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Author(s): ZHANG Ling, CHEN Jian-Min, CHEN Lei, WAN Hong-Qi, ZHOU Hui-Di

Journal: Journal of Inorganic Materials
ISSN 1000-324X

Volume: 26;
Issue: 6;
Start page: 643;
Date: 2011;
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Keywords: Sb2S3; morphology; lubricating additive; tribological properties

ABSTRACT
The tribological properties of Sb2S3 nano―bundles as an additive in liquid paraffin were evaluated on a four―ball tester, thereafter the performance of Sb2S3 nano―bundles was compared with that of Sb2S3 nano―particles. The comparative analyses of friction coefficients, wear scar diameters and morphology of worn surfaces show that Sb2S3 nano―bundles and nano―particles can both improve tribological properties of base oil, Sb2S3 nano―bundles exhibit better friction reduction and anti―wear properties than Sb2S3 nano―particles at relative low load, and they possess very similar tribological performance at relative high load. As far as the load carrying ability is concerned, the performance of nano―particles is obviously better than nano―bundles. It is inferred that the sliding―rolling friction transition emerges when lubricated with nano―bundles/oil mixture at low load, which contributes to the good lubricating effect of the nano―bundles.
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