Chromium oxide coated fibres, articles made therefrom and method of coating the fibres.

摘要

A ceramic fibre and a shrink resistant article manufactured therefrom. The fibre 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 fibre is uniformly coated with from about 0.01 to about 5 weight percent of Cr2O3. The coating is effected by precipitating Cr2O3.xH2O on the fibre followed by conversion of the precipitated Cr2O3.xH2O to Cr2O3.