Ag2S nanoparticles were prepared in two different W/O microemulsions, the structure and morphologies of as-prepared Ag2S nanoparticles were characterized by means of X-ray powder diffraction (XRD), transmission electron microscope (TEM). The tribological properties of liquid paraffin containing Ag2S nanoparticles were evaluated on a four-ball test machine, the worn steel surface morphology were analyzed by using of scanning electron microscope (SEM). Results show that Ag2S nanoparticles synthesized in two microemulsions, i.e. isooctane/sodium oleate/n-pentanol/water solution (sampleⅠ) and liquid paraffin/Span 80-Tween 80/n-butanol/water solution (sampleⅡ) both possess monocline crystal structure, and exhibit an even grain distribution. They have average particle size of 18nm and 5nm, respectively. The antiwear tests show that Ag2S nanoparticles dispersed in liquid paraffin processed from liquid paraffin/Span 80-Tween 80/n-butanol/ water solution microemulsion exhibit good antiwear properties which can improve load carrying capacity of the base oil remarkably.
GUO Wen-Jing
,
SUN Lei
,
WU Zhi-Shen
,
ZHANG Zhi-Jun
. Preparation and Antiwear Properties of Silver Sulfide Nanoparticles in Microemulsion[J]. Journal of Inorganic Materials, 2008
, 23(5)
: 960
-964
.
DOI: 10.3724/SP.J.1077.2008.00960
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