Synthesis, structure and tribological performance of tungsten disulphide nanocomposites

✍ Scribed by Ping-Zhan Si; Chul-Jin Choi; Jae-Wook Lee; Dian-Yu Geng; Zhi-Dong Zhang

• Book ID: 103841956
• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 721 KB
• Volume: 443
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2006.08.026

✦ Synopsis

Tungsten disulphide nanocomposites were prepared in large scale by employing the direct reaction between tungsten nanoparticles and sulphur powders. The nanocomposites include a variety of shapes such as isolated WS 2 multi-layered sheets, WS 2 -coated WO 3 nanoparticles, and enclosed fullerene-like WS 2 structures. Pin-on-disc wear tests indicate that the addition of a small amount (5 wt%) of these nanoparticles to paraffin decreases significantly the wear loss of the pin. Additives of these WS 2 /WO 3 nanoparticles possess much better tribological performance than micrometersized WS 2 powders additives do. The surface topography of wear scar of the pins after wear tests with different additives and different loads were studied by scanning electron microscopy. Small (severe) damage of the pin surface was observed for WS 2 /WO 3 nanoparticles (WS 2 micropowders) additives.