Erosion, thermal shock and oxidation resistant refractory compos

Details Erosion, thermal shock and oxidation resistant refractory compos Erosion, thermal shock and oxidation resistant refractory compos

1991-03-11

1993-02-09

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

501 96, 501102, 501103, C04B 3558

Patent

active

051853000

ABSTRACT:
A refractory material possessing excellent erosion, thermal shock and oxidation resistance, as well as resistance to oxide build up useful in continuous casting of steel for use in such articles as tundish shrouds, particularly for slagline sleeves, bore liners and upper seating areas in such shrouds, as well as for stopper rod noses. The material consists of the following by weight: (a) carbon, from about 4% to about 50%; (b) one or more members selected from the group consisting of zirconium di-boride and titanium di-boride in an amount of from about 10% to about 90%; and (c) one or more members selected from the group consisting of zirconia, SiAlON, clay, alumina, magnesia, silica, silicon carbide, silicon nitride, boron nitride, mullite and chromia in an mount of from about 10% to about 80%.

REFERENCES:
patent: 4540675 (1985-09-01), Morris et al.
patent: 4870037 (1989-09-01), Hoggard et al.
patent: 4871698 (1989-10-01), Fishler et al.
patent: 4913408 (1990-04-01), Hoggard et al.

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