Properties of silicate-bonded silicon carbide refractories

Silicate-bonded silicon carbide refractories have been prepared by reaction bonding. Mullite or sillimanite was used for bonding of silicon carbide. T he percentage of silicate bond was varied from 15 to 30 wt.%. Molybdenum di silicate (4 wt.%) has been used as an infiltrant for silicon carbide refrac tories. Modulus of rupture (MOR) of these refractories increases with molyb denum disilicate addition. Thermal expansion coefficients of the refractori es vary from 32.8 x 10(-6) to 4.1 x 10(-6)/degreesC. These are resistant to non-ferrous metals but are attacked by molten salts. (C) 2001 Elsevier Sci ence B.V. All rights reserved.