Carbon-containing refractory

Details Carbon-containing refractory Carbon-containing refractory

1983-02-04

1984-09-11

Poer, James

Compositions: ceramic

Ceramic compositions

Refractory

501 98, 501 99, 501100, 501101, C04B 3558

Patent

active

044710593

ABSTRACT:
Carbon in the form of graphite is commonly used in refractories for metallurgical purposes because of its ability to increase resistance to corrosion. However, if the graphite in the refractory becomes oxidized, it greatly loses this ability. For this reason, it is very important for a refractory to have good resistance to oxidation, but there are at present no refractories fully satisfactory from the standpoints of resistance to oxidation and hot strength.
The present invention is a carbon-containing refractory having excellent resistance to oxidation and hot strength. These favorable properties are obtained by the addition in the refractory of both boron carbide and metal powder, the powder comprising at least one metal selected from Al, Si, Fe, and Ni.

REFERENCES:
patent: 4306030 (1981-12-01), Watanabe et al.

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