Synthesis of tribological WS2 powder from oxide precursor
ContributorsRadmilović, Velimir R.
Uskoković, Dragan P.
Conference object (Published version)
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This paper describes two stages process for synthesis of WS2 powder on selected temperatures by using WO3 as a precursor. WO3 submicron particles were prepared by ultrasonic spray pyrolysis of ammonium meta-tungstate (AMT) at 650°C in the air. WS2 particles were obtained by sulfurization of the WO3 particles in presence of additive K2CO3 in a nitrogen atmosphere, first at lower temperature (200°C) and followed by reduction at higher temperature (900°C). HSC Chemistry software package 9.0 is used for the analysis of chemistry and thermodynamic parameters of the processes for synthesis of WS2 powder. The samples of WO3 and WS2 powders were characterized by X-ray diffraction (XRD) measurements. The morphology and composition of these samples were examined by scanning electron microscopy (SEM) combined with energy dispersive X-ray analysis (EDX).
Keywords:WS2 powder / oxide / thermodynamic parameters / X-ray diffraction
Source:Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018, 2018, 71-71
- Belgrade : Materials Research Society of Serbia
- Innovative synergy of by-products, waste minimization and clean technologies in metallurgy (RS-34033)
- VEGA 1/0442/17