SILICON NITRIDE IRON POWDER AND REFRACTORY MATERIAL

摘要

This invention provides a refractory material which has solved problems such as a lowering in strength and a lowering in corrosion resistance in a high-temperature range of 1300°C or above. There is also provided a silicon nitride iron powder characterized in that it comprises 80 to 90% by mass of silicon nitride containing not less than 90% by mass of a ß-type silicon nitride, and 20 to 10% by mass of iron and not more than 10 parts by mass of at least one of ferrosilicon, silica, and metallic silicon is contained based on 100 parts by mass of the silicon nitride iron powder. The refractory material is produced by firing a starting material of a refractory material containing the silicon nitride iron powder, carbon, an aggregate, and an organic binder at 1300°C or above.