prEN 12698

Chemical analysis of nitride bonded silicon carbide refractories

Scope

This part of EN 12698 describes the methods for the analysis of all refractory products containing nitride bonded silicon carbide, irrespective of the Silicon carbide level. It includes details of sample preparation, general principles of chemical analysis and detailed methods for the determination of carbon, silicon carbide, free aluminium, free silicon, total nitrogen and oxygen.
Silicon nitride, silicon oxynitride, silicon, free silica and silicon aluminium oxynitride (sialon) can be determined by XRD.