Ceramic fibers and composites comprising same
Assignee3M Innovative Properties Company
InventorsAnatoly Z. Rosenflanz, Ahmet Celikkaya, Thomas J. Anderson
Life of this patent
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Abstract
Ceramic fibers comprising glass, and composites comprising such fibers. The glass comprises at least 35 percent by weight Al2O3, based on the total metal oxide content of the glass, a first metal oxide other than Al2O3, and a second, different metal oxide other than Al2O3. The glass contains not more than 10 percent by weight collectively As2O3, B2O3, GeO2, P2O5, SiO2, TeO2, and V2O5, based on the total weight of the glass. The first and the second metal oxides are each selected from the group consisting of Y2O3, REO, MgO, TiO2, Cr2O3, CuO, NiO, Fe2O3, ZrO2, HfO2 and complex metal oxides thereof. At least a portion of the glass may be converted to crystals.
Claims20
A ceramic fiber comprising glass, the ceramic fiber comprising at least 35 percent by weight Al2O3, based on the total metal oxide content of the ceramic fiber, a first metal oxide other than Al2O3, and a second, different metal oxide other than Al2O3, wherein the ceramic fiber contains not more than 10 percent by weight collectively As2O3, B2O3, GeO2, P2O5, SiO2, TeO2, and V2O5, based on the total metal oxide content of the ceramic fiber, wherein the glass comprises at least 35 percent by weight Al2O3, based on the total metal oxide content of the glass, the first metal oxide other than Al2O3, and the second, different metal oxide other than Al2O3, wherein the glass contains not more than 10 percent by weight collectively As2O3, B2O3, GeO2, P2O5, SiO2, TeO2, and V2O5, based on the total weight of the glass, and wherein the first and the second metal oxides are each selected from the group consisting of Y2O3, REO, TiO2, Cr2O3, CuO, NiO, ZrO2, HfO2 and complex metal oxides thereof.
Dependencies are inferred from the claim text.