J. Dong, Z. S. Hu, G. X. Chen
Aug 1, 1999
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Journal
Lubrication Science
Abstract
Spherical diantimony trioxide SbOx(OH)y with a particle size of 30–70 nm has been prepared using a technique known as ‘ethanol supercritical fluid drying’. The tribological properties of an SN500 oil containing these nanometric particles were measured using a four‐ball and block‐on‐ring tribotester. The wear resistance and load‐carrying capacity of the oil were higher, and its friction coefficient lower, than that of the base oil. An excessive nanometric particles content was found to be disadvantageous to the load‐carrying capacity of the oil. The spherical nanometric diantimony trioxide appears to work by deposition on the rubbing surfaces and through the rolling action of the spherical particles.