Silicon nitride-bound ceramics production comprises inserting bricks made from a mixture of silicon and a reducing agent into a retort made from silicon carbide, and firing

摘要

Production of silicon nitride-bound ceramics comprises inserting bricks (8) made from a mixture of silicon and a reducing agent into a retort (2) made from silicon carbide, and firing. The retort is rinsed with an atmosphere free from oxygen and oxygen-containing materials and before firing, and rinsed with a nitrogen-containing atmosphere during firing. An Independent claim is also included for a device for carrying out the above process comprising a retort (2) for receiving silicon-containing bricks and having an inlet line (4), and a waste gas line (5). Preferred Features: The reducing agent is silicon carbide.