Method for producing chromium oxide coated refractory fibers
AssigneeKennecott Corporation
InventorsRussell D. Smith, Richard E. Tressler
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Abstract
A ceramic fiber and a shrink resistant article manufactured therefrom. The fiber comprises at least 80 weight percent of a refractory compound selected from the group consisting of silica, alumina, aluminum silicate, titania, zirconia, zirconium silicate and mixtures thereof and which comprises less than 5 combined weight percent of alkali or alkaline metal oxide or alkali or alkaline metal silicate. The fiber is uniformly coated with from about 0.01 to about 5 weight percent of Cr.sub.2 O.sub.3.
Claims5
A method for uniformly coating a ceramic fiber to increase the shrink resistance of the ceramic fiber comprising spraying a solution containing from about 0.1 to about 20 weight percent chromium ion upon the fiber at a fiber temperature of about 350.degree. C. to the melting temperature of the fiber to form a fiber having increased shrink resistance, said spraying occurring during fiberization prior to initial cooling.
Dependencies are inferred from the claim text.