Zirconia mullite/boron nitride composites
AssigneeUnion Carbide Corporation
InventorGregory W. Shaffer
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Abstract
A hot-pressed ceramic composite having good resistance to thermal shock and good erosion/corrosion resistance in molten alloys, and a method for producing said composite which comprises the blending of fused zirconia mullite with boron nitride.
Claims8
A ceramic composite comprising a mixture of boron nitride and fused zirconia mullite, said fused zirconia mullite comprising from 25 to 45 weight percent zirconia and from 55 to 75 weight percent mullite based on the weight of the fused zirconia mullite, and said ceramic composite comprising from 26 to 90 weight percent boron nitride and from 10 to 74 weight percent fused zirconia mullite based on the weight of the ceramic composite.
A break ring for use in horizontal continuous casting processes comprising a mixture of boron nitride and fused zirconia mullite, said fused zirconia mullite comprising from 25 to 45 weight percent zirconia and from 55 to 75 weight percent mullite based on the weight of the fused zirconia mullite, and said ceramic composite comprising from 26 to 90 weight percent boron nitride and from 10 to 74 weight percent fused zirconia mullite based on the weight of said break ring.
Dependencies are inferred from the claim text.