Oxidation Behavior of SiCN–ZrO ₂ Fiber Prepared from Alkoxide‐Modified Silazane

Abstract

The oxidation behavior of SiCN–ZrO 2 fibers and SiCN at 1350°C are compared. The as‐measured parabolic rate constants for the two materials are nearly the same (15–20 × 10 −18 m 2 /s). However, after implementing a correction for the difference in the compositions, the rate constant is 13.2 × 10 −18 m 2 /s for the fiber, and 29.4 × 10 −18 m 2 /s for SiCN. The lower oxidation rate of the fiber is ascribed to the lower carbon content in the fiber material.