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The preparation and tribology of spherical nanometric particles of diantimony trioxide SbO x (OH) y
Author(s) -
Dong J. X.,
Hu Z. S.,
Chen G. X.
Publication year - 1999
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.3010110405
Subject(s) - rubbing , tribology , materials science , trioxide , chemical engineering , particle size , supercritical fluid , base oil , friction coefficient , deposition (geology) , molybdenum trioxide , composite material , metallurgy , organic chemistry , chemistry , scanning electron microscope , paleontology , sulfur , sediment , engineering , biology , molybdenum
Spherical diantimony trioxide SbO x (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.