Changed oxidation behavior of ZrB2–SiC ceramics with the addition of ZrC. Issue 6 (July 2015) - Liu, Hu-Lin
Abstract: Oxidation behavior of ZrB2 –SiC ceramics containing 0, 10 and 20 vol% ZrC was studied at 1600 °C in stagnant air. The structures of oxide scales depended on ZrC content. The thickness of the SiO2 -rich glass layer on the outermost surface decreased steeply with the addition of ZrC. One "ZrC-corroded layer", containing ZrC x O y, SiC and ZrB2, was observed in ZrB2 –SiC–ZrC. The oxidation kinetics was converted from parabolic to linear for the ceramics with 20 vol% ZrC.