Papers by Keyword: Carbon Contents

Abstract: ZrCO ceramic microspheres were fabricated by sol-gel combined with carbothermic reduction. The effect of carbon on the physicochemical characteristics of the microspheres was investigated. The results indicated that with the increase of carbon content in the broth, the interior structure of the sintered microspheres would become loose, which led to the lowering of the density and the decreasing of crush strength of the ZrCO microspheres. Crack-free ZrCO ceramic microspheres with the high mass fraction of ZrC could be successfully obtained with C/Zr = 3 in the broth sintered at 1550°C for 4h in argon containing 5%CO.

Abstract: β-SiC powder was synthesized using silicon sludge from photovoltaic silicon-wafer production by varying heat treatment temperature and carbon contents. The synthesized β-SiC powder and silicon sludge was analyzed by XRD, SEM, FT-IR and Particle size analysis. It is known that the conversion of SiC from the mixture of Silicon and Carbon is mainly affected by the mole ratio of C/Si and heat treatment temperature. In this study, the influence of reaction temperature and carbon contents on the synthesis of β-SiC from silicon sludge was examined.