Low cement spinel stabilized silicon carbide composite material

摘要

An oxidation resistant low cement silicon carbide composite material, including a high alumina cement matrix portion in an amount of about 8 weight percent, a high alumina spinel portion in an amount between about 5 weight percent and about 20 weight percent, a silica fume portion in an amount of about 8 percent, a chrome aluminum stainless steel alloy needle additive portion, and a silicon carbide portion in an amount defining a remainder of the composition. The high alumina cement portion contains about 68 weight percent alumina and about 31 weight percent calcia, and the high alumina spinel portion contains about 78 weight percent alumina and about 22 weight percent magnesia.

主权项

1. An oxidation resistant low cement silicon carbide composite composition, comprising:
high alumina cement in an amount between about 5 weight percent and about 10 weight percent; high alumina spinel in an amount between about 5 weight percent and about 20 weight percent; silica in an amount of between about 5 and about 12 percent; and silicon carbide refractory aggregate in an amount defining a remainder of the composition, wherein the high alumina cement contains at least about 65 weight percent alumina; and wherein the high alumina spinel contains at least about 70 weight percent alumina.