| Influence of B-Sialon/Ti(C, N) Powders on the Corrosion
and Oxidation Resistance of Zero-Cement
Al2O3-SiC-C Refractory Castables |
Dexin Yang, Yangai Liu*, Hao Ding and Zhaohui Huang
Pages : 22-28
DOI : 10.1080/0371750X.2014.987404 |
| Abstract |
| Al2O3-SiC-C refractory castables added with ?-sialon/Ti(C, N) powders were prepared with silica sol and phenolic
resin as binding agents at room temperature. The effects of ?-sialon/Ti(C, N) powders, silica sol and phenolic resin
on slag penetration and corrosion resistance as well as oxidation resistance of the refractory castables were
investigated by X-ray diffraction, scanning electron microscopy and energy dispersive spectroscope. Corrosion
resistance and oxidation resistance mechanisms of the Al2O3-SiC-C refractory castables were also discussed. The
results showed that the castables obtained with silica sol as the binding agent at a temperature of 1450oC presented
better oxidation resistance. The oxidation resistance and slag erosion resistance of the refractory castables could
be improved by adding Ti(C, N)/?-sialon powders. Static crucible method and fractal dimension calculation result
showed that the prepared castables possessed excellent slag erosion resistance.
[Keywords: ?-sialon/Ti(C, N) powders, Zero-cement, Castables, Phenolic resin, Silica sol] |
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